Refactoring

.project

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>pandalib-parent</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+	</natures>
+</projectDescription>

.settings/org.eclipse.core.resources.prefs

@@ -0,0 +1,2 @@
+eclipse.preferences.version=1
+encoding/<project>=UTF-8

.settings/org.eclipse.m2e.core.prefs

@@ -0,0 +1,4 @@
+activeProfiles=
+eclipse.preferences.version=1
+resolveWorkspaceProjects=true
+version=1

Core/.settings/org.eclipse.jdt.core.prefs

@@ -1,6 +1,6 @@
 eclipse.preferences.version=1
 org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
 org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
 org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=ignore

Core/src/main/java/fr/pandacube/Pandacube.java

@@ -1,97 +0,0 @@
-package fr.pandacube;
-
-import java.nio.charset.Charset;
-import java.util.Locale;
-import java.util.TimeZone;
-
-import fr.pandacube.util.text_display.Chat;
-import net.md_5.bungee.api.ChatColor;
-
-public class Pandacube {
-	
-	public static final Locale LOCALE = Locale.FRANCE;
-	
-	public static final TimeZone TIMEZONE = TimeZone.getTimeZone("Europe/Paris");
-
-	public static final Charset NETWORK_CHARSET = Charset.forName("UTF-8");
-
-	public static final int NETWORK_TCP_BUFFER_SIZE = 1024 * 1024;
-
-	public static final int NETWORK_TIMEOUT = 0; // no timeout (milli-seconds)
-	
-	
-	
-	
-
-	//public static final ChatColor CHAT_GREEN_1_NORMAL = ChatColor.of("#5f9765"); // h=126 s=23 l=48
-	
-	public static final ChatColor CHAT_GREEN_1_NORMAL = ChatColor.of("#3db849"); // h=126 s=50 l=48
-	public static final ChatColor CHAT_GREEN_2 = ChatColor.of("#5ec969"); // h=126 s=50 l=58
-	public static final ChatColor CHAT_GREEN_3 = ChatColor.of("#85d68d"); // h=126 s=50 l=68
-	public static final ChatColor CHAT_GREEN_4 = ChatColor.of("#abe3b0"); // h=126 s=50 l=78
-
-	public static final ChatColor CHAT_GREEN_SATMAX = ChatColor.of("#00ff19"); // h=126 s=100 l=50
-	public static final ChatColor CHAT_GREEN_1_SAT = ChatColor.of("#20d532"); // h=126 s=50 l=48
-	public static final ChatColor CHAT_GREEN_2_SAT = ChatColor.of("#45e354"); // h=126 s=50 l=58
-	public static final ChatColor CHAT_GREEN_3_SAT = ChatColor.of("#71ea7d"); // h=126 s=50 l=68
-	public static final ChatColor CHAT_GREEN_4_SAT = ChatColor.of("#9df0a6"); // h=126 s=50 l=78
-
-	public static final ChatColor CHAT_BROWN_1 = ChatColor.of("#b26d3a"); // h=26 s=51 l=46
-	public static final ChatColor CHAT_BROWN_2 = ChatColor.of("#cd9265"); // h=26 s=51 l=60
-	public static final ChatColor CHAT_BROWN_3 = ChatColor.of("#e0bb9f"); // h=26 s=51 l=75
-
-	public static final ChatColor CHAT_BROWN_1_SAT = ChatColor.of("#b35c19"); // h=26 s=75 l=40
-	public static final ChatColor CHAT_BROWN_2_SAT = ChatColor.of("#e28136"); // h=26 s=51 l=55
-	public static final ChatColor CHAT_BROWN_3_SAT = ChatColor.of("#ecab79"); // h=26 s=51 l=70
-	
-	public static final ChatColor CHAT_GRAY_MID = ChatColor.of("#888888");
-	
-	public static final ChatColor CHAT_BROADCAST_COLOR = ChatColor.YELLOW;
-	
-	
-	public static final ChatColor CHAT_DECORATION_COLOR = CHAT_GREEN_1_NORMAL;
-	public static final char CHAT_DECORATION_CHAR = '-';
-	public static final ChatColor CHAT_URL_COLOR = CHAT_GREEN_1_NORMAL; 
-	public static final ChatColor CHAT_COMMAND_COLOR = CHAT_GRAY_MID;
-	public static final ChatColor CHAT_COMMAND_HIGHLIGHTED_COLOR = ChatColor.WHITE;
-	public static final ChatColor CHAT_INFO_COLOR = CHAT_GREEN_4;
-	public static final ChatColor CHAT_SUCCESS_COLOR = CHAT_GREEN_SATMAX;
-	public static final ChatColor CHAT_FAILURE_COLOR = ChatColor.of("#ff3333");
-	public static final ChatColor CHAT_DATA_COLOR = CHAT_GRAY_MID;
-
-
-	public static final ChatColor CHAT_PM_PREFIX_DECORATION = Pandacube.CHAT_BROWN_2_SAT;
-	public static final ChatColor CHAT_PM_SELF_MESSAGE = Pandacube.CHAT_GREEN_2;
-	public static final ChatColor CHAT_PM_OTHER_MESSAGE = Pandacube.CHAT_GREEN_4;
-	
-	
-	public static final Chat CHAT_MESSAGE_PREFIX() {
-		return Chat.text("[")
-			.color(CHAT_BROADCAST_COLOR)
-			.thenDecoration("Pandacube")
-			.thenText("] ");
-	}
-			
-	
-	
-	
-	/**
-	 * Number of decoration character to put between the text and the border of
-	 * the line for left and right aligned text.
-	 */
-	public static final int CHAT_NB_CHAR_MARGIN = 1;
-	
-	
-	
-	
-	static {
-		// initialize class to avoid NCDFE when updating the plugin
-		@SuppressWarnings({ "deprecation", "unused" })
-		Class<?>
-		c1 = fr.pandacube.util.network_api.server.RequestAnalyser.class,
-		c2 = fr.pandacube.util.network_api.server.RequestAnalyser.BadRequestException.class,
-		c3 = fr.pandacube.util.network_api.server.Response.class,
-		c4 = fr.pandacube.util.text_display.ChatUtil.class;
-	}
-
-}

Core/src/main/java/fr/pandacube/lib/core/chat/Chat.java

@@ -1,9 +1,9 @@
-package fr.pandacube.util.text_display;
+package fr.pandacube.lib.core.chat;
 
 import java.awt.Color;
 import java.util.UUID;
+import java.util.function.Supplier;
 
-import fr.pandacube.Pandacube;
 import net.md_5.bungee.api.ChatColor;
 import net.md_5.bungee.api.chat.BaseComponent;
 import net.md_5.bungee.api.chat.ClickEvent;
@@ -118,7 +118,7 @@ public abstract class Chat extends ChatStatic {
 	 * @return this, for method chaining
 	 */
 	public Chat thenEmptyCharLine() {
-		return then(ChatUtil.emptyLine(Pandacube.CHAT_DECORATION_CHAR, Pandacube.CHAT_DECORATION_COLOR, console));
+		return then(ChatUtil.emptyLine(config.decorationChar, config.decorationColor, console));
 	}
 	
 	
@@ -128,8 +128,8 @@ public abstract class Chat extends ChatStatic {
 	 * @return this, for method chaining
 	 */
 	public Chat thenLeftTextCharLine(Chat leftText) {
-		return then(ChatUtil.leftText(chat().decorationColor().thenText(" ").then(leftText).thenText(" ").get(), Pandacube.CHAT_DECORATION_CHAR,
-				Pandacube.CHAT_DECORATION_COLOR, Pandacube.CHAT_NB_CHAR_MARGIN, console));
+		return then(ChatUtil.leftText(chat().decorationColor().thenText(" ").then(leftText).thenText(" ").get(), config.decorationChar,
+				config.decorationColor, config.nbCharMargin, console));
 	}
 	/**
 	 * Draws a full line with the default decoration char, colored with the default decoration color,
@@ -147,8 +147,8 @@ public abstract class Chat extends ChatStatic {
 	 * @return this, for method chaining
 	 */
 	public Chat thenRightTextCharLine(Chat rightText) {
-		return then(ChatUtil.rightText(chat().decorationColor().thenText(" ").then(rightText).thenText(" ").get(), Pandacube.CHAT_DECORATION_CHAR,
-				Pandacube.CHAT_DECORATION_COLOR, Pandacube.CHAT_NB_CHAR_MARGIN, console));
+		return then(ChatUtil.rightText(chat().decorationColor().thenText(" ").then(rightText).thenText(" ").get(), config.decorationChar,
+				config.decorationColor, config.nbCharMargin, console));
 	}
 	/**
 	 * Draws a full line with the default decoration char, colored with the default decoration color,
@@ -166,8 +166,8 @@ public abstract class Chat extends ChatStatic {
 	 * @return this, for method chaining
 	 */
 	public Chat thenCenterTextCharLine(Chat centerText) {
-		return then(ChatUtil.centerText(chat().decorationColor().thenText(" ").then(centerText).thenText(" ").get(), Pandacube.CHAT_DECORATION_CHAR,
-				Pandacube.CHAT_DECORATION_COLOR, console));
+		return then(ChatUtil.centerText(chat().decorationColor().thenText(" ").then(centerText).thenText(" ").get(), config.decorationChar,
+				config.decorationColor, console));
 	}
 	/**
 	 * Draws a full line with the default decoration char, colored with the default decoration color,
@@ -218,11 +218,11 @@ public abstract class Chat extends ChatStatic {
 		public FormatableChat yellow() { return color(ChatColor.YELLOW); }
 		public FormatableChat white() { return color(ChatColor.WHITE); }
 
-		public FormatableChat successColor() { return color(Pandacube.CHAT_SUCCESS_COLOR); }
-		public FormatableChat failureColor() { return color(Pandacube.CHAT_FAILURE_COLOR); }
-		public FormatableChat infoColor() { return color(Pandacube.CHAT_INFO_COLOR); }
-		public FormatableChat dataColor() { return color(Pandacube.CHAT_DATA_COLOR); }
-		public FormatableChat decorationColor() { return color(Pandacube.CHAT_DECORATION_COLOR); }
+		public FormatableChat successColor() { return color(config.successColor); }
+		public FormatableChat failureColor() { return color(config.failureColor); }
+		public FormatableChat infoColor() { return color(config.infoColor); }
+		public FormatableChat dataColor() { return color(config.dataColor); }
+		public FormatableChat decorationColor() { return color(config.decorationColor); }
 		
 		public FormatableChat font(String f) { component.setFont(f); return this; }
 		
@@ -306,4 +306,33 @@ public abstract class Chat extends ChatStatic {
 		return values;
 	}
 	
+	
+	
+	
+	
+	
+	protected static final Config config = new Config();
+	
+	public static Config getConfig() {
+		return config;
+	}
+	
+	public static class Config {
+		public ChatColor decorationColor = ChatColor.YELLOW;
+		public char decorationChar = '-';
+		public int nbCharMargin = 1;
+		public ChatColor successColor = ChatColor.GREEN;
+		public ChatColor failureColor = ChatColor.RED;
+		public ChatColor infoColor = ChatColor.GOLD;
+		public ChatColor dataColor = ChatColor.GRAY;
+		public ChatColor urlColor = ChatColor.GREEN;
+		public ChatColor commandColor = ChatColor.GRAY;
+		public ChatColor highlightedCommandColor = ChatColor.WHITE;
+		public ChatColor broadcastColor = ChatColor.YELLOW;
+		public Supplier<Chat> prefix;
+		
+	}
+	
+	
+	
 }

Core/src/main/java/fr/pandacube/lib/core/chat/ChatColorUtil.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.text_display;
+package fr.pandacube.lib.core.chat;
 
 import java.awt.Color;
 import java.util.ArrayList;

Core/src/main/java/fr/pandacube/lib/core/chat/ChatStatic.java

@@ -1,8 +1,8 @@
-package fr.pandacube.util.text_display;
+package fr.pandacube.lib.core.chat;
 
 import java.util.Objects;
 
-import fr.pandacube.util.text_display.Chat.FormatableChat;
+import fr.pandacube.lib.core.chat.Chat.FormatableChat;
 import net.md_5.bungee.api.chat.BaseComponent;
 import net.md_5.bungee.api.chat.KeybindComponent;
 import net.md_5.bungee.api.chat.Keybinds;

Core/src/main/java/fr/pandacube/lib/core/chat/ChatUtil.java

@@ -1,9 +1,9 @@
-package fr.pandacube.util.text_display;
+package fr.pandacube.lib.core.chat;
 
-import static fr.pandacube.util.text_display.Chat.chatComponent;
-import static fr.pandacube.util.text_display.ChatStatic.chat;
-import static fr.pandacube.util.text_display.ChatStatic.legacyText;
-import static fr.pandacube.util.text_display.ChatStatic.text;
+import static fr.pandacube.lib.core.chat.ChatStatic.chat;
+import static fr.pandacube.lib.core.chat.ChatStatic.chatComponent;
+import static fr.pandacube.lib.core.chat.ChatStatic.legacyText;
+import static fr.pandacube.lib.core.chat.ChatStatic.text;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -14,8 +14,7 @@ import java.util.TreeSet;
 
 import com.google.common.collect.ImmutableMap;
 
-import fr.pandacube.Pandacube;
-import fr.pandacube.util.text_display.Chat.FormatableChat;
+import fr.pandacube.lib.core.chat.Chat.FormatableChat;
 import net.md_5.bungee.api.ChatColor;
 import net.md_5.bungee.api.chat.BaseComponent;
 import net.md_5.bungee.api.chat.TextComponent;
@@ -60,7 +59,7 @@ public class ChatUtil {
 		String dispURL = (url.length() > 50) ? (url.substring(0, 48) + "...") : url;
 		return chat()
 				.clickURL(url)
-				.color(Pandacube.CHAT_URL_COLOR)
+				.color(Chat.getConfig().urlColor)
 				.hoverText(
 						hover != null ? hover : Chat.text(dispURL)
 				)
@@ -85,7 +84,7 @@ public class ChatUtil {
 	/* package */ static BaseComponent createCommandLink(Chat d, String commandWithSlash, Chat hoverText) {
 		FormatableChat c = chat()
 				.clickCommand(commandWithSlash)
-				.color(Pandacube.CHAT_COMMAND_COLOR);
+				.color(Chat.getConfig().commandColor);
 		if (hoverText != null)
 			c.hoverText(hoverText);
 		return c.then(d).get();
@@ -110,7 +109,7 @@ public class ChatUtil {
 	/* package */ static BaseComponent createCommandSuggest(Chat d, String commandWithSlash, Chat hoverText) {
 		FormatableChat c = chat()
 				.clickSuggest(commandWithSlash)
-				.color(Pandacube.CHAT_COMMAND_COLOR);
+				.color(Chat.getConfig().commandColor);
 		if (hoverText != null)
 			c.hoverText(hoverText);
 		return c.then(d).get();
@@ -163,7 +162,7 @@ public class ChatUtil {
 			
 			FormatableChat pDisp = chatComponent(createCommandLink(Integer.toString(page), String.format(cmdFormat, page), "Aller à la page " + page));
 			if (page == currentPage) {
-				pDisp.color(Pandacube.CHAT_COMMAND_HIGHLIGHTED_COLOR);
+				pDisp.color(Chat.getConfig().highlightedCommandColor);
 			}
 			d.then(pDisp);
 			

Core/src/main/java/fr/pandacube/lib/core/chat/TextProgressBar.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.text_display;
+package fr.pandacube.lib.core.chat;
 
 import net.md_5.bungee.api.ChatColor;
 

Core/src/main/java/fr/pandacube/lib/core/commands/AbstractCommand.java

@@ -1,8 +1,8 @@
-package fr.pandacube.util.commands;
+package fr.pandacube.lib.core.commands;
 
 import java.util.Arrays;
 
-import fr.pandacube.util.text_display.ChatStatic;
+import fr.pandacube.lib.core.chat.ChatStatic;
 
 public class AbstractCommand extends ChatStatic {
 	

Core/src/main/java/fr/pandacube/lib/core/commands/BadCommandUsage.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.commands;
+package fr.pandacube.lib.core.commands;
 
 import java.util.logging.Logger;
 

Core/src/main/java/fr/pandacube/lib/core/commands/SuggestionsSupplier.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.commands;
+package fr.pandacube.lib.core.commands;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -10,7 +10,7 @@ import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-import fr.pandacube.util.ListUtil;
+import fr.pandacube.lib.core.util.ListUtil;
 
 @FunctionalInterface
 public interface SuggestionsSupplier<S> {

Core/src/main/java/fr/pandacube/lib/core/config/AbstractConfig.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.config;
+package fr.pandacube.lib.core.config;
 
 import java.io.BufferedReader;
 import java.io.File;
@@ -9,8 +9,8 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 
-import fr.pandacube.util.Log;
-import fr.pandacube.util.text_display.ChatColorUtil;
+import fr.pandacube.lib.core.chat.ChatColorUtil;
+import fr.pandacube.lib.core.util.Log;
 /**
  * Classe chargeant en mémoire un fichier de configuration ou un dossier donné
  * @author Marc Baloup

Core/src/main/java/fr/pandacube/lib/core/config/AbstractConfigManager.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.config;
+package fr.pandacube.lib.core.config;
 
 import java.io.File;
 import java.io.IOException;

Core/src/main/java/fr/pandacube/lib/core/db/DB.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.orm;
+package fr.pandacube.lib.core.db;
 
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
@@ -10,54 +10,61 @@ import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.function.Consumer;
 
 import org.javatuples.Pair;
 
-import fr.pandacube.util.Log;
+import fr.pandacube.lib.core.util.Log;
 
 /**
- * <b>ORM = Object-Relational Mapping</b>
+ * Static class to handle most of the database operations.
+ * 
+ * To use this database library, first call {@link #init(DBConnection)} with an appropriate {@link DBConnection},
+ * they you can initialize every table you need for your application, using {@link #initTable(Class)}.
  *
  * @author Marc Baloup
- *
  */
-public final class ORM {
+public final class DB {
 
 	private static List<Class<? extends SQLElement<?>>> tables = new ArrayList<>();
 	private static Map<Class<? extends SQLElement<?>>, String> tableNames = new HashMap<>();
 
 	private static DBConnection connection;
+	/* package */ static String tablePrefix = "";
 
 	public static DBConnection getConnection() {
 		return connection;
 	}
 
-	public synchronized static <E extends SQLElement<E>> void init(DBConnection conn) {
-
+	public synchronized static <E extends SQLElement<E>> void init(DBConnection conn, String tablePrefix) {
 		connection = conn;
-
-
+		DB.tablePrefix = Objects.requireNonNull(tablePrefix);
 	}
 
-	public static synchronized <E extends SQLElement<E>> void initTable(Class<E> elemClass) throws ORMInitTableException {
+	public static synchronized <E extends SQLElement<E>> void initTable(Class<E> elemClass) throws DBInitTableException {
+		if (connection == null) {
+			throw new DBInitTableException(elemClass, "Database connection is not yet initialized.");
+		}
 		if (tables.contains(elemClass)) return;
 		try {
 			tables.add(elemClass);
-			Log.debug("[ORM] Start Init SQL table "+elemClass.getSimpleName());
+			Log.debug("[DB] Start Init SQL table "+elemClass.getSimpleName());
 			E instance = elemClass.getConstructor().newInstance();
-			String tableName = instance.tableName();
+			String tableName = tablePrefix + instance.tableName();
 			tableNames.put(elemClass, tableName);
 			if (!tableExistInDB(tableName)) createTable(instance);
-			Log.debug("[ORM] End init SQL table "+elemClass.getSimpleName());
+			Log.debug("[DB] End init SQL table "+elemClass.getSimpleName());
 		} catch (Exception|ExceptionInInitializerError e) {
-			throw new ORMInitTableException(elemClass, e);
+			throw new DBInitTableException(elemClass, e);
 		}
 	}
 
 	private static <E extends SQLElement<E>> void createTable(E elem) throws SQLException {
 		
-		String sql = "CREATE TABLE IF NOT EXISTS " + elem.tableName() + " (";
+		String tableName = tablePrefix + elem.tableName();
+
+		String sql = "CREATE TABLE IF NOT EXISTS " + tableName + " (";
 		List<Object> params = new ArrayList<>();
 
 		Collection<SQLField<E, ?>> tableFields = elem.getFields().values();
@@ -82,7 +89,7 @@ public final class ORM {
 		}
 	}
 	
-	public static <E extends SQLElement<E>> String getTableName(Class<E> elemClass) throws ORMException {
+	public static <E extends SQLElement<E>> String getTableName(Class<E> elemClass) throws DBException {
 		initTable(elemClass);
 		return tableNames.get(elemClass);
 	}
@@ -97,91 +104,91 @@ public final class ORM {
 
 	@SuppressWarnings("unchecked")
 	public static <E extends SQLElement<E>> SQLField<E, Integer> getSQLIdField(Class<E> elemClass)
-			throws ORMInitTableException {
+			throws DBInitTableException {
 		initTable(elemClass);
 		return (SQLField<E, Integer>) SQLElement.fieldsCache.get(elemClass).get("id");
 	}
 
-	public static <E extends SQLElement<E>> SQLElementList<E> getByIds(Class<E> elemClass, Integer... ids) throws ORMException {
+	public static <E extends SQLElement<E>> SQLElementList<E> getByIds(Class<E> elemClass, Integer... ids) throws DBException {
 		return getByIds(elemClass, Arrays.asList(ids));
 	}
 
 	public static <E extends SQLElement<E>> SQLElementList<E> getByIds(Class<E> elemClass, Collection<Integer> ids)
-			throws ORMException {
+			throws DBException {
 		return getAll(elemClass, getSQLIdField(elemClass).in(ids), SQLOrderBy.asc(getSQLIdField(elemClass)), 1, null);
 	}
 
-	public static <E extends SQLElement<E>> E getById(Class<E> elemClass, int id) throws ORMException {
+	public static <E extends SQLElement<E>> E getById(Class<E> elemClass, int id) throws DBException {
 		return getFirst(elemClass, getSQLIdField(elemClass).eq(id));
 	}
 
 	public static <E extends SQLElement<E>> E getFirst(Class<E> elemClass, SQLWhere<E> where)
-			throws ORMException {
+			throws DBException {
 		return getFirst(elemClass, where, null, null);
 	}
 
 	public static <E extends SQLElement<E>> E getFirst(Class<E> elemClass, SQLOrderBy<E> orderBy)
-			throws ORMException {
+			throws DBException {
 		return getFirst(elemClass, null, orderBy, null);
 	}
 
 	public static <E extends SQLElement<E>> E getFirst(Class<E> elemClass, SQLWhere<E> where, SQLOrderBy<E> orderBy)
-			throws ORMException {
+			throws DBException {
 		return getFirst(elemClass, where, orderBy, null);
 	}
 
 	public static <E extends SQLElement<E>> E getFirst(Class<E> elemClass, SQLWhere<E> where, SQLOrderBy<E> orderBy, Integer offset)
-			throws ORMException {
+			throws DBException {
 		SQLElementList<E> elts = getAll(elemClass, where, orderBy, 1, offset);
 		return (elts.size() == 0) ? null : elts.get(0);
 	}
 
-	public static <E extends SQLElement<E>> SQLElementList<E> getAll(Class<E> elemClass) throws ORMException {
+	public static <E extends SQLElement<E>> SQLElementList<E> getAll(Class<E> elemClass) throws DBException {
 		return getAll(elemClass, null, null, null, null);
 	}
 
-	public static <E extends SQLElement<E>> SQLElementList<E> getAll(Class<E> elemClass, SQLWhere<E> where) throws ORMException {
+	public static <E extends SQLElement<E>> SQLElementList<E> getAll(Class<E> elemClass, SQLWhere<E> where) throws DBException {
 		return getAll(elemClass, where, null, null, null);
 	}
 
 	public static <E extends SQLElement<E>> SQLElementList<E> getAll(Class<E> elemClass, SQLWhere<E> where,
-			SQLOrderBy<E> orderBy) throws ORMException {
+			SQLOrderBy<E> orderBy) throws DBException {
 		return getAll(elemClass, where, orderBy, null, null);
 	}
 
 	public static <E extends SQLElement<E>> SQLElementList<E> getAll(Class<E> elemClass, SQLWhere<E> where,
-			SQLOrderBy<E> orderBy, Integer limit) throws ORMException {
+			SQLOrderBy<E> orderBy, Integer limit) throws DBException {
 		return getAll(elemClass, where, orderBy, limit, null);
 	}
 
 	public static <E extends SQLElement<E>> SQLElementList<E> getAll(Class<E> elemClass, SQLWhere<E> where,
-			SQLOrderBy<E> orderBy, Integer limit, Integer offset) throws ORMException {
+			SQLOrderBy<E> orderBy, Integer limit, Integer offset) throws DBException {
 			SQLElementList<E> elmts = new SQLElementList<>();
 			forEach(elemClass, where, orderBy, limit, offset, elmts::add);
 			return elmts;
 	}
 	
-	public static <E extends SQLElement<E>> void forEach(Class<E> elemClass, Consumer<E> action) throws ORMException {
+	public static <E extends SQLElement<E>> void forEach(Class<E> elemClass, Consumer<E> action) throws DBException {
 		forEach(elemClass, null, null, null, null, action);
 	}
 	
 	public static <E extends SQLElement<E>> void forEach(Class<E> elemClass, SQLWhere<E> where,
-			Consumer<E> action) throws ORMException {
+			Consumer<E> action) throws DBException {
 		forEach(elemClass, where, null, null, null, action);
 	}
 	
 	public static <E extends SQLElement<E>> void forEach(Class<E> elemClass, SQLWhere<E> where,
-			SQLOrderBy<E> orderBy, Consumer<E> action) throws ORMException {
+			SQLOrderBy<E> orderBy, Consumer<E> action) throws DBException {
 		forEach(elemClass, where, orderBy, null, null, action);
 	}
 	
 	public static <E extends SQLElement<E>> void forEach(Class<E> elemClass, SQLWhere<E> where,
-			SQLOrderBy<E> orderBy, Integer limit, Consumer<E> action) throws ORMException {
+			SQLOrderBy<E> orderBy, Integer limit, Consumer<E> action) throws DBException {
 		forEach(elemClass, where, orderBy, limit, null, action);
 	}
 	
 	public static <E extends SQLElement<E>> void forEach(Class<E> elemClass, SQLWhere<E> where,
-			SQLOrderBy<E> orderBy, Integer limit, Integer offset, Consumer<E> action) throws ORMException {
+			SQLOrderBy<E> orderBy, Integer limit, Integer offset, Consumer<E> action) throws DBException {
 		initTable(elemClass);
 
 		try {
@@ -206,18 +213,18 @@ public final class ORM {
 				}
 			}
 		} catch (SQLException e) {
-			throw new ORMException(e);
+			throw new DBException(e);
 		}
 
 	}
 	
 	
 	
-	public static <E extends SQLElement<E>> long count(Class<E> elemClass) throws ORMException {
+	public static <E extends SQLElement<E>> long count(Class<E> elemClass) throws DBException {
 		return count(elemClass, null);
 	}
 	
-	public static <E extends SQLElement<E>> long count(Class<E> elemClass, SQLWhere<E> where) throws ORMException {
+	public static <E extends SQLElement<E>> long count(Class<E> elemClass, SQLWhere<E> where) throws DBException {
 		initTable(elemClass);
 
 		try {
@@ -238,17 +245,17 @@ public final class ORM {
 				}
 			}
 		} catch (SQLException e) {
-			throw new ORMException(e);
+			throw new DBException(e);
 		}
 		
-		throw new ORMException("Can’t retrieve element count from database (The ResultSet may be empty)");
+		throw new DBException("Can’t retrieve element count from database (The ResultSet may be empty)");
 
 	}
 	
 	
 	
 	
-	public static ResultSet customQueryStatement(String sql, List<Object> params) throws ORMException {
+	public static ResultSet customQueryStatement(String sql, List<Object> params) throws DBException {
 		try {
 			PreparedStatement ps = connection.getNativeConnection().prepareStatement(sql);
 			int i = 1;
@@ -264,7 +271,7 @@ public final class ORM {
 			
 			return rs;
 		} catch (SQLException e) {
-			throw new ORMException(e);
+			throw new DBException(e);
 		}
 
 	}
@@ -272,11 +279,11 @@ public final class ORM {
 	
 
 	
-	public static <E extends SQLElement<E>> SQLUpdate<E> update(Class<E> elemClass, SQLWhere<E> where) throws ORMException {
+	public static <E extends SQLElement<E>> SQLUpdate<E> update(Class<E> elemClass, SQLWhere<E> where) throws DBException {
 		return new SQLUpdate<>(elemClass, where);
 	}
 	
-	/* package */ static <E extends SQLElement<E>> int update(Class<E> elemClass, SQLWhere<E> where, Map<SQLField<E, ?>, Object> values) throws ORMException {
+	/* package */ static <E extends SQLElement<E>> int update(Class<E> elemClass, SQLWhere<E> where, Map<SQLField<E, ?>, Object> values) throws DBException {
 		return new SQLUpdate<>(elemClass, where, values).execute();
 	}
 
@@ -286,9 +293,9 @@ public final class ORM {
 	 * @param elemClass the SQLElement representing the table.
 	 * @param where the condition to meet for an element to be deleted from the table. If null, the table is truncated using {@link #truncateTable(Class)}.
 	 * @return The return value of {@link PreparedStatement#executeUpdate()}, for an SQL query {@code DELETE}.
-	 * @throws ORMException
+	 * @throws DBException
 	 */
-	public static <E extends SQLElement<E>> int delete(Class<E> elemClass, SQLWhere<E> where) throws ORMException {
+	public static <E extends SQLElement<E>> int delete(Class<E> elemClass, SQLWhere<E> where) throws DBException {
 		initTable(elemClass);
 		
 		if (where == null) {
@@ -308,7 +315,7 @@ public final class ORM {
 	
 	
 	
-	public static int customUpdateStatement(String sql, List<Object> params) throws ORMException {
+	public static int customUpdateStatement(String sql, List<Object> params) throws DBException {
 		try (PreparedStatement ps = connection.getNativeConnection().prepareStatement(sql)) {
 
 			int i = 1;
@@ -320,22 +327,22 @@ public final class ORM {
 			
 			return ps.executeUpdate();
 		} catch (SQLException e) {
-			throw new ORMException(e);
+			throw new DBException(e);
 		}
 	}
 	
 	
 	
-	public static <E extends SQLElement<E>> int truncateTable(Class<E> elemClass) throws ORMException {
+	public static <E extends SQLElement<E>> int truncateTable(Class<E> elemClass) throws DBException {
         try (Statement stmt = connection.getNativeConnection().createStatement()) {
             return stmt.executeUpdate("TRUNCATE `" + getTableName(elemClass) + "`");
         } catch(SQLException e) {
-        	throw new ORMException(e);
+        	throw new DBException(e);
         }
 	}
 
 	@SuppressWarnings("unchecked")
-	private static <E extends SQLElement<E>> E getElementInstance(ResultSet set, Class<E> elemClass) throws ORMException {
+	private static <E extends SQLElement<E>> E getElementInstance(ResultSet set, Class<E> elemClass) throws DBException {
 		try {
 			E instance = elemClass.getConstructor(int.class).newInstance(set.getInt("id"));
 
@@ -363,7 +370,7 @@ public final class ORM {
 						try {
 							val = ((SQLCustomType<Object, Object>)sqlField.type).dbToJavaConv.apply(val);
 						} catch (Exception e) {
-							throw new ORMException("Error while converting value of field '"+sqlField.getName()+"' with SQLCustomType from "+((SQLCustomType<Object, Object>)sqlField.type).intermediateJavaType
+							throw new DBException("Error while converting value of field '"+sqlField.getName()+"' with SQLCustomType from "+((SQLCustomType<Object, Object>)sqlField.type).intermediateJavaType
 									+"(jdbc source) to "+sqlField.type.getJavaType()+"(java destination). The original value is '"+val.toString()+"'", e);
 						}
 					}
@@ -377,15 +384,15 @@ public final class ORM {
 				}
 			}
 
-			if (!instance.isValidForSave()) throw new ORMException(
+			if (!instance.isValidForSave()) throw new DBException(
 					"This SQLElement representing a database entry is not valid for save : " + instance.toString());
 
 			return instance;
 		} catch (ReflectiveOperationException | IllegalArgumentException | SecurityException | SQLException e) {
-			throw new ORMException("Can't instanciate " + elemClass.getName(), e);
+			throw new DBException("Can't instanciate " + elemClass.getName(), e);
 		}
 	}
 
-	private ORM() {} // rend la classe non instanciable
+	private DB() {}
 
 }

Core/src/main/java/fr/pandacube/lib/core/db/DBConnection.java

@@ -1,11 +1,11 @@
-package fr.pandacube.util.orm;
+package fr.pandacube.lib.core.db;
 
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 
-import fr.pandacube.util.Log;
+import fr.pandacube.lib.core.util.Log;
 
 public class DBConnection {
 	private static final long CONNECTION_CHECK_TIMEOUT = 30000; // in ms

Core/src/main/java/fr/pandacube/lib/core/db/DBException.java

@@ -0,0 +1,18 @@
+package fr.pandacube.lib.core.db;
+
+public class DBException extends Exception {
+	private static final long serialVersionUID = 1L;
+
+	public DBException(Throwable initCause) {
+		super(initCause);
+	}
+
+	public DBException(String message, Throwable initCause) {
+		super(message, initCause);
+	}
+
+	public DBException(String message) {
+		super(message);
+	}
+
+}

Core/src/main/java/fr/pandacube/lib/core/db/DBInitTableException.java

@@ -0,0 +1,18 @@
+package fr.pandacube.lib.core.db;
+
+public class DBInitTableException extends DBException {
+	private static final long serialVersionUID = 1L;
+
+	/* package */ <E extends SQLElement<E>> DBInitTableException(Class<E> tableElem) {
+		super("Error while initializing table " + ((tableElem != null) ? tableElem.getName() : "null"));
+	}
+
+	/* package */ <E extends SQLElement<E>> DBInitTableException(Class<E> tableElem, Throwable t) {
+		super("Error while initializing table " + ((tableElem != null) ? tableElem.getName() : "null"), t);
+	}
+
+	/* package */ <E extends SQLElement<E>> DBInitTableException(Class<E> tableElem, String message) {
+		super("Error while initializing table " + ((tableElem != null) ? tableElem.getName() : "null") + ": " + message);
+	}
+
+}

Core/src/main/java/fr/pandacube/lib/core/db/SQLCustomType.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.orm;
+package fr.pandacube.lib.core.db;
 
 import java.util.function.Function;
 

Core/src/main/java/fr/pandacube/lib/core/db/SQLElement.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.orm;
+package fr.pandacube.lib.core.db;
 
 import java.lang.reflect.Modifier;
 import java.sql.Date;
@@ -22,14 +22,14 @@ import org.apache.commons.lang.builder.ToStringBuilder;
 import com.google.gson.Gson;
 import com.google.gson.JsonObject;
 
-import fr.pandacube.util.EnumUtil;
-import fr.pandacube.util.Log;
+import fr.pandacube.lib.core.util.EnumUtil;
+import fr.pandacube.lib.core.util.Log;
 
 public abstract class SQLElement<E extends SQLElement<E>> {
 	/** cache for fields for each subclass of SQLElement */
 	/* package */ static final Map<Class<? extends SQLElement<?>>, SQLFieldMap<? extends SQLElement<?>>> fieldsCache = new HashMap<>();
 
-	DBConnection db = ORM.getConnection();
+	DBConnection db = DB.getConnection();
 
 	private boolean stored = false;
 	private int id;
@@ -43,8 +43,8 @@ public abstract class SQLElement<E extends SQLElement<E>> {
 	public SQLElement() {
 		
 		try {
-			ORM.initTable((Class<E>)getClass());
-		} catch (ORMInitTableException e) {
+			DB.initTable((Class<E>)getClass());
+		} catch (DBInitTableException e) {
 			throw new RuntimeException(e);
 		}
 
@@ -79,7 +79,7 @@ public abstract class SQLElement<E extends SQLElement<E>> {
 	}
 
 	/**
-	 * @return The name of the table in the database.
+	 * @return The name of the table in the database, without the prefix defined by {@link DB#init(DBConnection, String)}.
 	 */
 	protected abstract String tableName();
 
@@ -191,10 +191,10 @@ public abstract class SQLElement<E extends SQLElement<E>> {
 	 * @param <P> the table class of the primary key targeted by the specified foreign key field
 	 * @return the element in the table P that his primary key correspond to the foreign key value of this element.
 	 */
-	public <T, P extends SQLElement<P>> P getReferencedEntry(SQLFKField<E, T, P> field) throws ORMException {
+	public <T, P extends SQLElement<P>> P getReferencedEntry(SQLFKField<E, T, P> field) throws DBException {
 		T fkValue = get(field);
 		if (fkValue == null) return null;
-		return ORM.getFirst(field.getForeignElementClass(), field.getPrimaryField().eq(fkValue), null);
+		return DB.getFirst(field.getForeignElementClass(), field.getPrimaryField().eq(fkValue), null);
 	}
 
 	/**
@@ -202,10 +202,10 @@ public abstract class SQLElement<E extends SQLElement<E>> {
 	 * @param <F> the table class of the foreign key that reference a primary key of this element.
 	 * @return all elements in the table F for which the specified foreign key value correspond to the primary key of this element.
 	 */
-	public <T, F extends SQLElement<F>> SQLElementList<F> getReferencingForeignEntries(SQLFKField<F, T, E> field, SQLOrderBy<F> orderBy, Integer limit, Integer offset) throws ORMException {
+	public <T, F extends SQLElement<F>> SQLElementList<F> getReferencingForeignEntries(SQLFKField<F, T, E> field, SQLOrderBy<F> orderBy, Integer limit, Integer offset) throws DBException {
 		T value = get(field.getPrimaryField());
 		if (value == null) return new SQLElementList<>();
-		return ORM.getAll(field.getSQLElementType(), field.eq(value), orderBy, limit, offset);
+		return DB.getAll(field.getSQLElementType(), field.eq(value), orderBy, limit, offset);
 	}
 
 	public boolean isValidForSave() {
@@ -225,11 +225,11 @@ public abstract class SQLElement<E extends SQLElement<E>> {
 	}
 
 	@SuppressWarnings("unchecked")
-	public E save() throws ORMException {
+	public E save() throws DBException {
 		if (!isValidForSave())
 			throw new IllegalStateException(toString() + " has at least one undefined value and can't be saved.");
 
-		ORM.initTable((Class<E>)getClass());
+		DB.initTable((Class<E>)getClass());
 		try {
 
 			if (stored) { // mettre à jour les valeurs dans la base
@@ -243,7 +243,7 @@ public abstract class SQLElement<E extends SQLElement<E>> {
 
 				if (modifiedValues.isEmpty()) return (E) this;
 				
-				ORM.update((Class<E>)getClass(), getFieldId().eq(getId()), modifiedValues);
+				DB.update((Class<E>)getClass(), getFieldId().eq(getId()), modifiedValues);
 			}
 			else { // ajouter dans la base
 
@@ -268,7 +268,7 @@ public abstract class SQLElement<E extends SQLElement<E>> {
 				}
 				
 				try (PreparedStatement ps = db.getNativeConnection().prepareStatement(
-						"INSERT INTO " + tableName() + "  (" + concat_fields + ") VALUES (" + concat_vals + ")",
+						"INSERT INTO " + DB.tablePrefix + tableName() + "  (" + concat_fields + ") VALUES (" + concat_vals + ")",
 						Statement.RETURN_GENERATED_KEYS)) {
 
 					int i = 1;
@@ -287,19 +287,19 @@ public abstract class SQLElement<E extends SQLElement<E>> {
 
 			modifiedSinceLastSave.clear();
 		} catch (SQLException e) {
-			throw new ORMException("Error while saving data", e);
+			throw new DBException("Error while saving data", e);
 		}
 		return (E) this;
 	}
 	
 	
 	@SuppressWarnings({ "rawtypes", "unchecked" })
-	protected static <E extends SQLElement<E>> void addValueToSQLObjectList(List<Object> list, SQLField<E, ?> field, Object jValue) throws ORMException {
+	protected static <E extends SQLElement<E>> void addValueToSQLObjectList(List<Object> list, SQLField<E, ?> field, Object jValue) throws DBException {
 		if (jValue != null && field.type instanceof SQLCustomType) {
 			try {
 				jValue = ((SQLCustomType)field.type).javaToDbConv.apply(jValue);
 			} catch (Exception e) {
-				throw new ORMException("Error while converting value of field '"+field.getName()+"' with SQLCustomType from "+field.type.getJavaType()
+				throw new DBException("Error while converting value of field '"+field.getName()+"' with SQLCustomType from "+field.type.getJavaType()
 						+"(java source) to "+((SQLCustomType<?, ?>)field.type).intermediateJavaType+"(jdbc destination). The original value is '"+jValue.toString()+"'", e);
 			}
 		}
@@ -319,16 +319,16 @@ public abstract class SQLElement<E extends SQLElement<E>> {
 		return (SQLField<E, Integer>) fields.get("id");
 	}
 
-	public void delete() throws ORMException {
+	public void delete() throws DBException {
 
 		if (stored) { // supprimer la ligne de la base
 			try (PreparedStatement st = db.getNativeConnection()
-					.prepareStatement("DELETE FROM " + tableName() + " WHERE id=" + id)) {
+					.prepareStatement("DELETE FROM " + DB.tablePrefix + tableName() + " WHERE id=" + id)) {
 				Log.debug(st.toString());
 				st.executeUpdate();
 				markAsNotStored();
 			} catch (SQLException e) {
-				throw new ORMException(e);
+				throw new DBException(e);
 			}
 		}
 

Core/src/main/java/fr/pandacube/lib/core/db/SQLElementList.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.orm;
+package fr.pandacube.lib.core.db;
 
 import java.sql.SQLException;
 import java.util.ArrayList;
@@ -12,7 +12,7 @@ import java.util.stream.Collectors;
 
 import com.google.gson.JsonArray;
 
-import fr.pandacube.util.Log;
+import fr.pandacube.lib.core.util.Log;
 
 /**
  *
@@ -75,14 +75,14 @@ public class SQLElementList<E extends SQLElement<E>> extends ArrayList<E> {
 	 *
 	 * @throws SQLException
 	 */
-	public synchronized int saveCommon() throws ORMException {
+	public synchronized int saveCommon() throws DBException {
 		List<E> storedEl = getStoredEl();
 		if (storedEl.isEmpty()) return 0;
 		
 		@SuppressWarnings("unchecked")
 		Class<E> classEl = (Class<E>)storedEl.get(0).getClass();
 		
-		int ret = ORM.update(classEl,
+		int ret = DB.update(classEl,
 				storedEl.get(0).getFieldId().in(storedEl.stream().map(SQLElement::getId).collect(Collectors.toList())
 						),
 				modifiedValues);
@@ -106,7 +106,7 @@ public class SQLElementList<E extends SQLElement<E>> extends ArrayList<E> {
 	}
 
 	/**
-	 * @deprecated please use {@link ORM#delete(Class, SQLWhere)} instead,
+	 * @deprecated please use {@link DB#delete(Class, SQLWhere)} instead,
 	 * except if you really want to fetch the data before removing them from database.
 	 */
 	@Deprecated
@@ -118,12 +118,12 @@ public class SQLElementList<E extends SQLElement<E>> extends ArrayList<E> {
 			@SuppressWarnings("unchecked")
 			Class<E> classEl = (Class<E>)storedEl.get(0).getClass();
 			
-			ORM.delete(classEl, 
+			DB.delete(classEl, 
 					storedEl.get(0).getFieldId().in(storedEl.stream().map(SQLElement::getId).collect(Collectors.toList()))
 			);
 			for (E el : storedEl)
 				el.markAsNotStored();
-		} catch (ORMException e) {
+		} catch (DBException e) {
 			Log.severe(e);
 		}
 
@@ -131,7 +131,7 @@ public class SQLElementList<E extends SQLElement<E>> extends ArrayList<E> {
 	
 	
 	
-	public <T, P extends SQLElement<P>> SQLElementList<P> getReferencedEntries(SQLFKField<E, T, P> foreignKey, SQLOrderBy<P> orderBy) throws ORMException {
+	public <T, P extends SQLElement<P>> SQLElementList<P> getReferencedEntries(SQLFKField<E, T, P> foreignKey, SQLOrderBy<P> orderBy) throws DBException {
 		Set<T> values = new HashSet<>();
 		forEach(v -> {
 			T val = v.get(foreignKey);
@@ -143,12 +143,12 @@ public class SQLElementList<E extends SQLElement<E>> extends ArrayList<E> {
 			return new SQLElementList<>();
 		}
 		
-		return ORM.getAll(foreignKey.getForeignElementClass(), foreignKey.getPrimaryField().in(values), orderBy, null, null);
+		return DB.getAll(foreignKey.getForeignElementClass(), foreignKey.getPrimaryField().in(values), orderBy, null, null);
 		
 	}
 
 	
-	public <T, P extends SQLElement<P>> Map<T, P> getReferencedEntriesInGroups(SQLFKField<E, T, P> foreignKey) throws ORMException {
+	public <T, P extends SQLElement<P>> Map<T, P> getReferencedEntriesInGroups(SQLFKField<E, T, P> foreignKey) throws DBException {
 		SQLElementList<P> foreignElemts = getReferencedEntries(foreignKey, null);
 		
 		Map<T, P> ret = new HashMap<>();
@@ -158,7 +158,7 @@ public class SQLElementList<E extends SQLElement<E>> extends ArrayList<E> {
 	
 
 	
-	public <T, F extends SQLElement<F>> SQLElementList<F> getReferencingForeignEntries(SQLFKField<F, T, E> foreignKey, SQLOrderBy<F> orderBy, Integer limit, Integer offset) throws ORMException {
+	public <T, F extends SQLElement<F>> SQLElementList<F> getReferencingForeignEntries(SQLFKField<F, T, E> foreignKey, SQLOrderBy<F> orderBy, Integer limit, Integer offset) throws DBException {
 		Set<T> values = new HashSet<>();
 		forEach(v -> {
 			T val = v.get(foreignKey.getPrimaryField());
@@ -170,12 +170,12 @@ public class SQLElementList<E extends SQLElement<E>> extends ArrayList<E> {
 			return new SQLElementList<>();
 		}
 		
-		return ORM.getAll(foreignKey.getSQLElementType(), foreignKey.in(values), orderBy, limit, offset);
+		return DB.getAll(foreignKey.getSQLElementType(), foreignKey.in(values), orderBy, limit, offset);
 		
 	}
 
 	
-	public <T, F extends SQLElement<F>> Map<T, SQLElementList<F>> getReferencingForeignEntriesInGroups(SQLFKField<F, T, E> foreignKey, SQLOrderBy<F> orderBy, Integer limit, Integer offset) throws ORMException {
+	public <T, F extends SQLElement<F>> Map<T, SQLElementList<F>> getReferencingForeignEntriesInGroups(SQLFKField<F, T, E> foreignKey, SQLOrderBy<F> orderBy, Integer limit, Integer offset) throws DBException {
 		SQLElementList<F> foreignElements = getReferencingForeignEntries(foreignKey, orderBy, limit, offset);
 		
 		Map<T, SQLElementList<F>> map = new HashMap<>();

Core/src/main/java/fr/pandacube/lib/core/db/SQLFKField.java

@@ -1,6 +1,6 @@
-package fr.pandacube.util.orm;
+package fr.pandacube.lib.core.db;
 
-import fr.pandacube.util.Log;
+import fr.pandacube.lib.core.util.Log;
 
 /**
  * 
@@ -27,9 +27,9 @@ public class SQLFKField<F extends SQLElement<F>, T, P extends SQLElement<P>> ext
 	/* package */ static <E extends SQLElement<E>, F extends SQLElement<F>> SQLFKField<E, Integer, F> idFK(boolean nul, Integer deflt, Class<F> fkEl) {
 		if (fkEl == null) throw new IllegalArgumentException("foreignKeyElement can't be null");
 		try {
-			SQLField<F, Integer> f = ORM.getSQLIdField(fkEl);
+			SQLField<F, Integer> f = DB.getSQLIdField(fkEl);
 			return new SQLFKField<>(f.type, nul, deflt, fkEl, f);
-		} catch (ORMInitTableException e) {
+		} catch (DBInitTableException e) {
 			Log.severe("Can't create Foreign key Field targetting id field of '"+fkEl+"'", e);
 			return null;
 		}
@@ -47,8 +47,8 @@ public class SQLFKField<F extends SQLElement<F>, T, P extends SQLElement<P>> ext
 	private void construct(Class<P> fkEl, SQLField<P, T> fkF) {
 		if (fkF == null) throw new IllegalArgumentException("foreignKeyField can't be null");
 		try {
-			ORM.initTable(fkEl);
-		} catch (ORMInitTableException e) {
+			DB.initTable(fkEl);
+		} catch (DBInitTableException e) {
 			throw new RuntimeException(e);
 		}
 		

Core/src/main/java/fr/pandacube/lib/core/db/SQLField.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.orm;
+package fr.pandacube.lib.core.db;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -6,7 +6,11 @@ import java.util.List;
 
 import org.javatuples.Pair;
 
-import fr.pandacube.util.orm.SQLWhereComp.SQLComparator;
+import fr.pandacube.lib.core.db.SQLWhere.SQLWhereComp;
+import fr.pandacube.lib.core.db.SQLWhere.SQLWhereIn;
+import fr.pandacube.lib.core.db.SQLWhere.SQLWhereLike;
+import fr.pandacube.lib.core.db.SQLWhere.SQLWhereNull;
+import fr.pandacube.lib.core.db.SQLWhere.SQLWhereComp.SQLComparator;
 
 public class SQLField<E extends SQLElement<E>, T> {
 

Core/src/main/java/fr/pandacube/lib/core/db/SQLOrderBy.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.orm;
+package fr.pandacube.lib.core.db;
 
 import java.util.ArrayList;
 import java.util.List;

Core/src/main/java/fr/pandacube/lib/core/db/SQLType.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.orm;
+package fr.pandacube.lib.core.db;
 
 public class SQLType<T> {
 

Core/src/main/java/fr/pandacube/lib/core/db/SQLUpdate.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.orm;
+package fr.pandacube.lib.core.db;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -7,7 +7,7 @@ import java.util.Map;
 
 import org.javatuples.Pair;
 
-import fr.pandacube.util.Log;
+import fr.pandacube.lib.core.util.Log;
 
 public class SQLUpdate<E extends SQLElement<E>> {
 	
@@ -37,14 +37,14 @@ public class SQLUpdate<E extends SQLElement<E>> {
 		return this;
 	}
 	
-	public int execute() throws ORMException {
+	public int execute() throws DBException {
 
 		if (values.isEmpty()) {
-			Log.warning(new ORMException("Trying to do an UPDATE with no values to SET. Query aborted."));
+			Log.warning(new DBException("Trying to do an UPDATE with no values to SET. Query aborted."));
 			return 0;
 		}
 
-		String sql = "UPDATE " + ORM.getTableName(elemClass) + " SET ";
+		String sql = "UPDATE " + DB.getTableName(elemClass) + " SET ";
 		List<Object> params = new ArrayList<>();
 
 		boolean first = true;
@@ -64,7 +64,7 @@ public class SQLUpdate<E extends SQLElement<E>> {
 		
 		sql += ";";
 		
-		return ORM.customUpdateStatement(sql, params);
+		return DB.customUpdateStatement(sql, params);
 	}
 
 }

Core/src/main/java/fr/pandacube/lib/core/db/SQLWhere.java

@@ -0,0 +1,306 @@
+package fr.pandacube.lib.core.db;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.logging.Level;
+
+import org.javatuples.Pair;
+
+import fr.pandacube.lib.core.util.Log;
+
+public abstract class SQLWhere<E extends SQLElement<E>> {
+
+	public abstract Pair<String, List<Object>> toSQL() throws DBException;
+
+	@Override
+	public String toString() {
+		try {
+			return toSQL().getValue0();
+		} catch (DBException e) {
+			Log.warning(e);
+			return "[SQLWhere.toString() error (see logs)]";
+		}
+	}
+	
+	public SQLWhereAnd<E> and(SQLWhere<E> other) {
+		return new SQLWhereAnd<E>().and(this).and(other);
+	}
+	
+	public SQLWhereOr<E> or(SQLWhere<E> other) {
+		return new SQLWhereOr<E>().or(this).or(other);
+	}
+	
+	public static <E extends SQLElement<E>> SQLWhereAnd<E> and() {
+		return new SQLWhereAnd<>();
+	}
+	
+	public static <E extends SQLElement<E>> SQLWhereOr<E> or() {
+		return new SQLWhereOr<>();
+	}
+	
+	public static String escapeLike(String str) {
+		return str.replace("\\", "\\\\").replace("_", "\\_").replace("%", "\\%");
+	}
+	
+	
+
+	
+	
+	
+	
+	
+	public static abstract class SQLWhereChain<E extends SQLElement<E>> extends SQLWhere<E> {
+
+		private SQLBoolOp operator;
+		protected List<SQLWhere<E>> conditions = new ArrayList<>();
+
+		private SQLWhereChain(SQLBoolOp op) {
+			if (op == null) throw new IllegalArgumentException("op can't be null");
+			operator = op;
+		}
+
+		protected void add(SQLWhere<E> sqlWhere) {
+			if (sqlWhere == null) throw new IllegalArgumentException("sqlWhere can't be null");
+			conditions.add(sqlWhere);
+		}
+		
+		@Override
+		public Pair<String, List<Object>> toSQL() throws DBException {
+			if (conditions.isEmpty()) {
+				throw new DBException("SQLWhereChain needs at least one element inside !");
+			}
+			
+			String sql = "";
+			List<Object> params = new ArrayList<>();
+			boolean first = true;
+
+			for (SQLWhere<E> w : conditions) {
+				if (!first) sql += " " + operator.sql + " ";
+				first = false;
+
+				Pair<String, List<Object>> ret = w.toSQL();
+				sql += "(" + ret.getValue0() + ")";
+				params.addAll(ret.getValue1());
+			}
+
+			return new Pair<>(sql, params);
+		}
+
+		protected enum SQLBoolOp {
+			/** Equivalent to SQL "<code>AND</code>" */
+			AND("AND"),
+			/** Equivalent to SQL "<code>OR</code>" */
+			OR("OR");
+			/* package */ final String sql;
+
+			private SQLBoolOp(String s) {
+				sql = s;
+			}
+
+		}
+
+	}
+	
+	
+	
+	
+	
+	
+	
+	
+	public static class SQLWhereAnd<E extends SQLElement<E>> extends SQLWhereChain<E> {
+
+		private SQLWhereAnd() {
+			super(SQLBoolOp.AND);
+		}
+		
+		@Override
+		public SQLWhereAnd<E> and(SQLWhere<E> other) {
+			add(other);
+			return this;
+		}
+
+	}
+	
+	
+	
+	
+	
+	
+	public static class SQLWhereOr<E extends SQLElement<E>> extends SQLWhereChain<E> {
+
+		private SQLWhereOr() {
+			super(SQLBoolOp.OR);
+		}
+		
+		@Override
+		public SQLWhereOr<E> or(SQLWhere<E> other) {
+			add(other);
+			return this;
+		}
+
+	}
+	
+	
+	
+	
+	
+	
+	/* package */ static class SQLWhereComp<E extends SQLElement<E>> extends SQLWhere<E> {
+
+		private SQLField<E, ?> left;
+		private SQLComparator comp;
+		private Object right;
+
+		/**
+		 * Compare a field with a value
+		 *
+		 * @param l the field at left of the comparison operator. Can't be null
+		 * @param c the comparison operator, can't be null
+		 * @param r the value at right of the comparison operator. Can't be null
+		 */
+		/* package */ <T> SQLWhereComp(SQLField<E, T> l, SQLComparator c, T r) {
+			if (l == null || r == null || c == null)
+				throw new IllegalArgumentException("All arguments for SQLWhereComp constructor can't be null");
+			left = l;
+			comp = c;
+			right = r;
+		}
+
+		@Override
+		public Pair<String, List<Object>> toSQL() throws DBException {
+			List<Object> params = new ArrayList<>();
+			SQLElement.addValueToSQLObjectList(params, left, right);
+			return new Pair<>("`" + left.getName() + "` " + comp.sql + " ? ", params);
+		}
+
+		/* package */ enum SQLComparator {
+			/** Equivalent to SQL "<code>=</code>" */
+			EQ("="),
+			/** Equivalent to SQL "<code>></code>" */
+			GT(">"),
+			/** Equivalent to SQL "<code>>=</code>" */
+			GEQ(">="),
+			/** Equivalent to SQL "<code>&lt;</code>" */
+			LT("<"),
+			/** Equivalent to SQL "<code>&lt;=</code>" */
+			LEQ("<="),
+			/** Equivalent to SQL "<code>!=</code>" */
+			NEQ("!=");
+
+			/* package */ final String sql;
+
+			private SQLComparator(String s) {
+				sql = s;
+			}
+
+		}
+
+	}
+	
+	
+	
+	
+	
+	
+	/* package */ static class SQLWhereIn<E extends SQLElement<E>> extends SQLWhere<E> {
+
+		private SQLField<E, ?> field;
+		private Collection<?> values;
+
+		/* package */ <T> SQLWhereIn(SQLField<E, T> f, Collection<T> v) {
+			if (f == null || v == null)
+				throw new IllegalArgumentException("All arguments for SQLWhereIn constructor can't be null");
+			field = f;
+			values = v;
+		}
+
+		@Override
+		public Pair<String, List<Object>> toSQL() throws DBException {
+			List<Object> params = new ArrayList<>();
+			
+			if (values.isEmpty())
+				return new Pair<>(" 1=0 ", params);
+			
+			for (Object v : values)
+				SQLElement.addValueToSQLObjectList(params, field, v);
+			
+			char[] questions = new char[values.size() == 0 ? 0 : (values.size() * 2 - 1)];
+			for (int i = 0; i < questions.length; i++)
+				questions[i] = i % 2 == 0 ? '?' : ',';
+			
+			return new Pair<>("`" + field.getName() + "` IN (" + new String(questions) + ") ", params);
+		}
+
+	}
+	
+	
+	
+	
+	
+	
+	
+	
+	/* package */ static class SQLWhereLike<E extends SQLElement<E>> extends SQLWhere<E> {
+
+		private SQLField<E, ?> field;
+		private String likeExpr;
+
+		/**
+		 * Compare a field with a value
+		 *
+		 * @param f the field at left of the LIKE keyword. Can't be null
+		 * @param like the like expression.
+		 */
+		/* package */ SQLWhereLike(SQLField<E, ?> f, String like) {
+			if (f == null || like == null)
+				throw new IllegalArgumentException("All arguments for SQLWhereLike constructor can't be null");
+			field = f;
+			likeExpr = like;
+		}
+
+		@Override
+		public Pair<String, List<Object>> toSQL() {
+			ArrayList<Object> params = new ArrayList<>();
+			params.add(likeExpr);
+			return new Pair<>("`" + field.getName() + "` LIKE ? ", params);
+		}
+
+	}
+	
+	
+	
+	
+	
+	
+	
+	/* package */ static class SQLWhereNull<E extends SQLElement<E>> extends SQLWhere<E> {
+
+		private SQLField<E, ?> fild;
+		private boolean nulll;
+
+		/**
+		 * Init a IS NULL / IS NOT NULL expression for a SQL WHERE condition.
+		 *
+		 * @param field the field to check null / not null state
+		 * @param isNull true if we want to ckeck if "IS NULL", or false to check if
+		 *        "IS NOT NULL"
+		 */
+		/* package */ SQLWhereNull(SQLField<E, ?> field, boolean isNull) {
+			if (field == null) throw new IllegalArgumentException("field can't be null");
+			if (!field.canBeNull) Log.getLogger().log(Level.WARNING,
+					"Useless : Trying to check IS [NOT] NULL on the field " + field.getSQLElementType().getName() + "#"
+							+ field.getName() + " which is declared in the ORM as 'can't be null'");
+			fild = field;
+			nulll = isNull;
+		}
+
+		@Override
+		public Pair<String, List<Object>> toSQL() {
+			return new Pair<>("`" + fild.getName() + "` IS " + ((nulll) ? "NULL" : "NOT NULL"), new ArrayList<>());
+		}
+
+	}
+
+}

Core/src/main/java/fr/pandacube/lib/core/net/Array8Bit.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.net;
+package fr.pandacube.lib.core.net;
 
 import java.util.Arrays;
 

Core/src/main/java/fr/pandacube/lib/core/net/ByteBuffer.java

@@ -1,13 +1,14 @@
-package fr.pandacube.util.net;
+package fr.pandacube.lib.core.net;
 
+import java.nio.charset.Charset;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
-import fr.pandacube.Pandacube;
-
 public final class ByteBuffer implements Cloneable {
 
+	public static final Charset NETWORK_CHARSET = Charset.forName("UTF-8");
+
 	private java.nio.ByteBuffer buff;
 
 	public ByteBuffer() {
@@ -223,7 +224,7 @@ public final class ByteBuffer implements Cloneable {
 		if (s == null) {
 			return putInt(-1);
 		}
-		return putSizedByteArray(s.getBytes(Pandacube.NETWORK_CHARSET));
+		return putSizedByteArray(s.getBytes(NETWORK_CHARSET));
 	}
 
 	/**
@@ -232,7 +233,7 @@ public final class ByteBuffer implements Cloneable {
 	 */
 	public String getString() {
 		byte[] binaryString = getSizedByteArray();
-		return (binaryString == null) ? null : new String(binaryString, Pandacube.NETWORK_CHARSET);
+		return (binaryString == null) ? null : new String(binaryString, NETWORK_CHARSET);
 	}
 
 	/**

Core/src/main/java/fr/pandacube/lib/core/net/PPacket.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.net;
+package fr.pandacube.lib.core.net;
 
 import java.util.Arrays;
 

Core/src/main/java/fr/pandacube/lib/core/net/PPacketAnswer.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.net;
+package fr.pandacube.lib.core.net;
 
 import java.util.Arrays;
 

Core/src/main/java/fr/pandacube/lib/core/net/PPacketListener.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.net;
+package fr.pandacube.lib.core.net;
 
 @FunctionalInterface
 public interface PPacketListener<P extends PPacket> {

Core/src/main/java/fr/pandacube/lib/core/net/PServer.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.net;
+package fr.pandacube.lib.core.net;
 
 import java.io.Closeable;
 import java.io.IOException;
@@ -14,8 +14,7 @@ import java.util.concurrent.atomic.AtomicInteger;
 
 import org.apache.commons.lang.builder.ToStringBuilder;
 
-import fr.pandacube.Pandacube;
-import fr.pandacube.util.Log;
+import fr.pandacube.lib.core.util.Log;
 
 public class PServer extends Thread implements Closeable {
 	private static AtomicInteger connectionCounterId = new AtomicInteger(0);
@@ -51,14 +50,14 @@ public class PServer extends Thread implements Closeable {
 		try {
 			
 			socket = new ServerSocket();
-			socket.setReceiveBufferSize(Pandacube.NETWORK_TCP_BUFFER_SIZE);
+			socket.setReceiveBufferSize(PSocket.NETWORK_TCP_BUFFER_SIZE);
 			socket.setPerformancePreferences(0, 1, 0);
 			socket.bind(new InetSocketAddress(port));
 			
 			while (true) {
 				Socket socketClient = socket.accept();
-				socketClient.setSendBufferSize(Pandacube.NETWORK_TCP_BUFFER_SIZE);
-				socketClient.setSoTimeout(Pandacube.NETWORK_TIMEOUT);
+				socketClient.setSendBufferSize(PSocket.NETWORK_TCP_BUFFER_SIZE);
+				socketClient.setSoTimeout(PSocket.NETWORK_TIMEOUT);
 
 				try {
 					@SuppressWarnings("resource")

Core/src/main/java/fr/pandacube/lib/core/net/PSocket.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.net;
+package fr.pandacube.lib.core.net;
 
 import java.io.BufferedOutputStream;
 import java.io.Closeable;
@@ -19,8 +19,7 @@ import org.apache.commons.lang.builder.ToStringBuilder;
 
 import com.google.common.base.Objects;
 
-import fr.pandacube.Pandacube;
-import fr.pandacube.util.Log;
+import fr.pandacube.lib.core.util.Log;
 
 /**
  * A wrapper for a {@link Socket}. The connection must point to a software using {@link PServer}
@@ -36,6 +35,10 @@ import fr.pandacube.util.Log;
  */
 public class PSocket extends Thread implements Closeable {
 	
+	public static final int NETWORK_TCP_BUFFER_SIZE = 1024 * 1024;
+
+	public static final int NETWORK_TIMEOUT = 0; // no timeout (milli-seconds)
+
 	private boolean server = false;
 	private Socket socket;
 	private SocketAddress addr;
@@ -80,8 +83,8 @@ public class PSocket extends Thread implements Closeable {
 		try {
 			if (socket == null) {
 				socket = new Socket();
-				socket.setReceiveBufferSize(Pandacube.NETWORK_TCP_BUFFER_SIZE);
-				socket.setSendBufferSize(Pandacube.NETWORK_TCP_BUFFER_SIZE);
+				socket.setReceiveBufferSize(NETWORK_TCP_BUFFER_SIZE);
+				socket.setSendBufferSize(NETWORK_TCP_BUFFER_SIZE);
 				
 				socket.setSoTimeout(10000); // initial timeout before login
 			
@@ -137,7 +140,7 @@ public class PSocket extends Thread implements Closeable {
 				password = null;
 			}
 			
-			socket.setSoTimeout(Pandacube.NETWORK_TIMEOUT);
+			socket.setSoTimeout(NETWORK_TIMEOUT);
 			
 			Log.info(getName() + " connected.");
 			
@@ -202,7 +205,7 @@ public class PSocket extends Thread implements Closeable {
 		
 		byte[] nBytes = new byte[nSize];
 		in.readFully(nBytes);
-		String name = new String(nBytes, Pandacube.NETWORK_CHARSET);
+		String name = new String(nBytes, ByteBuffer.NETWORK_CHARSET);
 		
 		
 		int packetId = in.readInt();
@@ -241,7 +244,7 @@ public class PSocket extends Thread implements Closeable {
 		if (packet.content == null)
 			throw new IllegalArgumentException("packet.content can't be null");
 		
-		byte[] nameBytes = packet.name.getBytes(Pandacube.NETWORK_CHARSET);
+		byte[] nameBytes = packet.name.getBytes(ByteBuffer.NETWORK_CHARSET);
 		if (nameBytes.length > 127)
 			throw new IllegalArgumentException("packet.name must take fewer than 128 bytes when converted to UTF-8");
 		byte nameSize = (byte)nameBytes.length;

Core/src/main/java/fr/pandacube/lib/core/net/PSocketConnectionListener.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.net;
+package fr.pandacube.lib.core.net;
 
 public interface PSocketConnectionListener {
 

Core/src/main/java/fr/pandacube/lib/core/network_api/client/AbstractRequest.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.network_api.client;
+package fr.pandacube.lib.core.network_api.client;
 
 import java.io.PrintStream;
 

Core/src/main/java/fr/pandacube/lib/core/network_api/client/NetworkAPISender.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.network_api.client;
+package fr.pandacube.lib.core.network_api.client;
 
 import java.io.IOException;
 import java.io.PrintStream;

Core/src/main/java/fr/pandacube/lib/core/network_api/client/ResponseAnalyser.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.network_api.client;
+package fr.pandacube.lib.core.network_api.client;
 
 import java.io.BufferedReader;
 import java.io.IOException;

Core/src/main/java/fr/pandacube/lib/core/network_api/server/AbstractRequestExecutor.java

@@ -1,11 +1,11 @@
-package fr.pandacube.util.network_api.server;
+package fr.pandacube.lib.core.network_api.server;
 
 import java.io.IOException;
 import java.io.PrintStream;
 import java.net.InetAddress;
 import java.net.Socket;
 
-import fr.pandacube.util.Log;
+import fr.pandacube.lib.core.util.Log;
 
 @Deprecated
 public abstract class AbstractRequestExecutor {

Core/src/main/java/fr/pandacube/lib/core/network_api/server/NetworkAPIListener.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.network_api.server;
+package fr.pandacube.lib.core.network_api.server;
 
 import java.io.IOException;
 import java.net.ServerSocket;

Core/src/main/java/fr/pandacube/lib/core/network_api/server/PacketExecutor.java

@@ -1,11 +1,11 @@
-package fr.pandacube.util.network_api.server;
+package fr.pandacube.lib.core.network_api.server;
 
 import java.io.IOException;
 import java.io.PrintStream;
 import java.net.Socket;
 
-import fr.pandacube.util.Log;
-import fr.pandacube.util.network_api.server.RequestAnalyser.BadRequestException;
+import fr.pandacube.lib.core.network_api.server.RequestAnalyser.BadRequestException;
+import fr.pandacube.lib.core.util.Log;
 
 /**
  * Prends en charge un socket client et le transmet au gestionnaire de paquet

Core/src/main/java/fr/pandacube/lib/core/network_api/server/RequestAnalyser.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.network_api.server;
+package fr.pandacube.lib.core.network_api.server;
 
 import java.io.BufferedReader;
 import java.io.IOException;

Core/src/main/java/fr/pandacube/lib/core/network_api/server/Response.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.network_api.server;
+package fr.pandacube.lib.core.network_api.server;
 
 import java.io.PrintStream;
 

Core/src/main/java/fr/pandacube/lib/core/permissions/PermEntity.java

@@ -0,0 +1,167 @@
+package fr.pandacube.lib.core.permissions;
+
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+
+import fr.pandacube.lib.core.chat.ChatUtil.DisplayTreeNode;
+import fr.pandacube.lib.core.permissions.PermissionsCachedBackendReader.CachedEntity;
+import fr.pandacube.lib.core.permissions.SQLPermissions.EntityType;
+
+public abstract class PermEntity {
+	protected final String name;
+	protected final EntityType type;
+	protected PermEntity(String n, EntityType t) {
+		name = n; type = t;
+	}
+	
+	protected abstract CachedEntity getBackendEntity();
+	public abstract List<PermGroup> getInheritances();
+	public abstract List<String> getInheritancesString();
+	public abstract String getName();
+	
+	public String getInternalName() {
+		return name;
+	}
+	
+	
+	/**
+	 * Tells if the current entity inherits directly or indirectly from the specified group
+	 * @param group the group to search for
+	 * @param recursive true to search in the inheritance tree, or false to search only in the inheritance list of the current entity.
+	 * @return
+	 */
+	public boolean inheritsFromGroup(String group, boolean recursive) {
+		if (group == null)
+			return false;
+		return getInheritances().stream().anyMatch(g -> g.name.equals(group) || (recursive && g.inheritsFromGroup(group, recursive)));
+	}
+	
+	public String getPrefix() {
+		return Permissions.resolver.getEffectivePrefix(name, type);
+	}
+	
+	
+	public String getSelfPrefix() {
+		return getBackendEntity().getSelfPrefix();
+	}
+	
+	
+	public DisplayTreeNode debugPrefix() {
+		return Permissions.resolver.debugPrefix(name, type);
+	}
+	
+	
+	public void setSelfPrefix(String prefix) {
+		Permissions.backendWriter.setSelfPrefix(name, type, prefix);
+	}
+
+	
+	public String getSuffix() {
+		return Permissions.resolver.getEffectiveSuffix(name, type);
+	}
+	
+	public String getSelfSuffix() {
+		return getBackendEntity().getSelfSuffix();
+	}
+	
+	
+	public DisplayTreeNode debugSuffix() {
+		return Permissions.resolver.debugSuffix(name, type);
+	}
+	
+	
+	public void setSelfSuffix(String suffix) {
+		Permissions.backendWriter.setSelfSuffix(name, type, suffix);
+	}
+	
+	
+	public Boolean hasPermission(String permission) {
+		return Permissions.resolver.getEffectivePermission(name, type, permission, null, null);
+	}
+	
+	public Boolean hasPermission(String permission, String server) {
+		return Permissions.resolver.getEffectivePermission(name, type, permission, server, null);
+	}
+	
+	public Boolean hasPermission(String permission, String server, String world) {
+		return Permissions.resolver.getEffectivePermission(name, type, permission, server, world);
+	}
+	
+	
+	public DisplayTreeNode debugPermission(String permission) {
+		return Permissions.resolver.debugPermission(name, type, permission, null, null);
+	}
+	
+	public DisplayTreeNode debugPermission(String permission, String server) {
+		return Permissions.resolver.debugPermission(name, type, permission, server, null);
+	}
+	
+	public DisplayTreeNode debugPermission(String permission, String server, String world) {
+		return Permissions.resolver.debugPermission(name, type, permission, server, world);
+	}
+	
+	
+	public void addSelfPermission(String permission) {
+		Permissions.backendWriter.addSelfPermission(name, type, permission, null, null);
+	}
+	
+	public void addSelfPermission(String permission, String server) {
+		Permissions.backendWriter.addSelfPermission(name, type, permission, server, null);
+	}
+	
+	public void addSelfPermission(String permission, String server, String world) {
+		Permissions.backendWriter.addSelfPermission(name, type, permission, server, world);
+	}
+	
+	
+	public void removeSelfPermission(String permission) {
+		Permissions.backendWriter.removeSelfPermission(name, type, permission, null, null);
+	}
+	
+	public void removeSelfPermission(String permission, String server) {
+		Permissions.backendWriter.removeSelfPermission(name, type, permission, server, null);
+	}
+	
+	public void removeSelfPermission(String permission, String server, String world) {
+		Permissions.backendWriter.removeSelfPermission(name, type, permission, server, world);
+	}
+	
+	public int getSelfPermissionsCount() {
+		return getSelfPermissionsServerWorldKeys().stream()
+				.mapToInt(key -> getSelfPermissions(key.server, key.world).size())
+				.sum();
+	}
+	
+	public Set<ServerWorldKey> getSelfPermissionsServerWorldKeys() {
+		return getBackendEntity().getSelfPermissionsServerWorldKeys();
+	}
+	
+	public List<String> getSelfPermissions() {
+		return getBackendEntity().getSelfPermissions(null, null);
+	}
+	
+	public List<String> getSelfPermissions(String server) {
+		return getBackendEntity().getSelfPermissions(server, null);
+	}
+	
+	public List<String> getSelfPermissions(String server, String world) {
+		return getBackendEntity().getSelfPermissions(server, world);
+	}
+	
+	
+	
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == null || !(obj instanceof PermEntity))
+			return false;
+		PermEntity o = (PermEntity) obj;
+		return Objects.equals(name, o.name) && type == o.type;
+	}
+	
+	@Override
+	public int hashCode() {
+		return Objects.hash(name, type);
+	}
+	
+}

Core/src/main/java/fr/pandacube/lib/core/permissions/PermGroup.java

@@ -0,0 +1,64 @@
+package fr.pandacube.lib.core.permissions;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import fr.pandacube.lib.core.permissions.PermissionsCachedBackendReader.CachedGroup;
+import fr.pandacube.lib.core.permissions.SQLPermissions.EntityType;
+
+public class PermGroup extends PermEntity {
+	/* package */ PermGroup(String name) {
+		super(name, EntityType.Group);
+	}
+	@Override
+	protected CachedGroup getBackendEntity() {
+		return Permissions.backendReader.getCachedGroup(name);
+	}
+	
+	@Override
+	public String getName() {
+		return getInternalName();
+	}
+	
+	@Override
+	public List<PermGroup> getInheritances() {
+		return fromCachedGroups(getBackendEntity().inheritances);
+	}
+	
+	@Override
+	public List<String> getInheritancesString() {
+		return getBackendEntity().inheritances.stream()
+				.map(cg -> cg.name)
+				.collect(Collectors.toList());
+	}
+	
+	public boolean isDefault() {
+		return getBackendEntity().deflt;
+	}
+	
+	public void setDefault(boolean deflt) {
+		Permissions.backendWriter.setGroupDefault(name, deflt);
+	}
+	
+	public void addInheritance(String group) {
+		Permissions.backendWriter.addInheritance(name, type, group);
+	}
+	
+	public void addInheritance(PermGroup group) {
+		addInheritance(group.name);
+	}
+	
+	public void removeInheritance(String group) {
+		Permissions.backendWriter.removeInheritance(name, type, group);
+	}
+	
+	public void removeInheritance(PermGroup group) {
+		removeInheritance(group.name);
+	}
+	
+	/* package */ static List<PermGroup> fromCachedGroups(List<CachedGroup> in) {
+		return in.stream()
+				.map(cg -> Permissions.getGroup(cg.name))
+				.collect(Collectors.toList());
+	}
+}

Core/src/main/java/fr/pandacube/lib/core/permissions/PermPlayer.java

@@ -0,0 +1,104 @@
+package fr.pandacube.lib.core.permissions;
+
+import java.util.List;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+import fr.pandacube.lib.core.permissions.PermissionsCachedBackendReader.CachedPlayer;
+import fr.pandacube.lib.core.permissions.SQLPermissions.EntityType;
+import fr.pandacube.lib.core.players.PlayerFinder;
+
+public class PermPlayer extends PermEntity {
+	private final UUID playerId;
+	/* package */ PermPlayer(UUID id) {
+		super(id.toString(), EntityType.User);
+		playerId = id;
+	}
+	@Override
+	protected CachedPlayer getBackendEntity() {
+		return Permissions.backendReader.getCachedPlayer(playerId);
+	}
+	
+	@Override
+	public List<PermGroup> getInheritances() {
+		return PermGroup.fromCachedGroups(getBackendEntity().groups);
+	}
+	
+	@Override
+	public List<String> getInheritancesString() {
+		return getBackendEntity().groups.stream()
+				.map(cg -> cg.name)
+				.collect(Collectors.toList());
+	}
+	
+	public UUID getPlayerId() {
+		return playerId;
+	}
+	
+	private String cachedPlayerName;
+	@Override
+	public synchronized String getName() {
+		if (cachedPlayerName == null)
+			cachePlayerName();
+		return cachedPlayerName;
+	}
+	private void cachePlayerName() {
+		cachedPlayerName = PlayerFinder.getLastKnownName(playerId);
+		if (cachedPlayerName == null)
+			cachedPlayerName = playerId.toString();
+	}
+	
+	/**
+	 * Alias for {@link #getInheritances()}.
+	 * @return
+	 */
+	public List<PermGroup> getGroups() {
+		return getInheritances();
+	}
+	
+	/**
+	 * Alias for {@link #getInheritances()}.
+	 * @return
+	 */
+	public List<String> getGroupsString() {
+		return getInheritancesString();
+	}
+	
+	/**
+	 * Tells if the player is directly part of a group.
+	 * This is equivalent to {@link #inheritsFromGroup(String, boolean) inheritsFromGroup(group, false)}
+	 * @param group the group to search for
+	 * @return
+	 */
+	public boolean isInGroup(String group) {
+		return inheritsFromGroup(group, false);
+	}
+	
+	public boolean isUsingDefaultGroups() {
+		return getBackendEntity().usingDefaultGroups;
+	}
+	
+	public void setGroup(String group) {
+		Permissions.backendWriter.setInheritance(name, type, group);
+	}
+	
+	public void setGroup(PermGroup group) {
+		setGroup(group.name);
+	}
+	
+	public void addGroup(String group) {
+		Permissions.backendWriter.addInheritance(name, type, group);
+	}
+	
+	public void addGroup(PermGroup group) {
+		addGroup(group.name);
+	}
+	
+	public void removeGroup(String group) {
+		Permissions.backendWriter.removeInheritance(name, type, group);
+	}
+	
+	public void removeGroup(PermGroup group) {
+		removeGroup(group.name);
+	}
+}

Core/src/main/java/fr/pandacube/lib/core/permissions/Permissions.java

@@ -0,0 +1,96 @@
+package fr.pandacube.lib.core.permissions;
+
+import java.util.List;
+import java.util.UUID;
+
+import fr.pandacube.lib.core.db.DB;
+import fr.pandacube.lib.core.db.DBException;
+import fr.pandacube.lib.core.util.Log;
+
+public class Permissions {
+	
+	/* package */ static PermissionsCachedBackendReader backendReader;
+	/* package */ static PermissionsResolver resolver;
+	/* package */ static PermissionsBackendWriter backendWriter;
+	
+	/**
+	 * Initialize the permission system.
+	 * The connection to the database needs to be initialized first, using {@link DB#init(DBConnection, String)}.
+	 * @throws DBException
+	 */
+	public static void init() throws DBException {
+		if (backendReader != null)
+			return;
+		try {
+			DB.initTable(SQLPermissions.class);
+			backendReader = new PermissionsCachedBackendReader();
+			resolver = new PermissionsResolver(backendReader);
+			backendWriter = new PermissionsBackendWriter();
+		} catch (Exception e) {
+			backendReader = null;
+			resolver = null;
+			backendWriter = null;
+			throw e;
+		}
+	}
+
+	private static void checkInitialized() {
+		if (backendReader == null) {
+			throw new IllegalStateException("Permissions system not initialized. Check the server logs to check if there is an error during the startup, and check if the init() method is called properly.");
+		}
+	}
+	
+	public static void clearPlayerCache(UUID playerId) {
+		checkInitialized();
+		backendReader.clearPlayerCache(playerId);
+		resolver.clearPlayerFromCache(playerId);
+	}
+	
+	public static void clearCache(Runnable then) {
+		checkInitialized();
+		backendReader.clearAndResetCacheAsync(() -> {
+			resolver.clearCache();
+			if (then != null)
+				then.run();
+		});
+	}
+	
+	
+	public static PermPlayer getPlayer(UUID playerId) {
+		checkInitialized();
+		return new PermPlayer(playerId);
+	}
+	
+	public static void precachePlayerAsync(UUID playerId) {
+		checkInitialized();
+		Thread t = new Thread(() -> {
+			try {
+				backendReader.getCachedPlayer(playerId);
+			} catch (RuntimeException e) {
+				Log.warning("Can’t init player cache asynchronously: " + e.getMessage());
+			}
+		}, "Async permissions player cache loader");
+		t.setDaemon(true);
+		t.start();
+	}
+	
+	public static PermGroup getGroup(String name) {
+		checkInitialized();
+		return new PermGroup(name);
+	}
+	
+	public static List<PermGroup> getGroups() {
+		checkInitialized();
+		return PermGroup.fromCachedGroups(backendReader.getGroups());
+	}
+	
+	public static List<PermGroup> getDefaultGroups() {
+		checkInitialized();
+		return PermGroup.fromCachedGroups(backendReader.getDefaultGroups());
+	}
+	
+	public static List<String> getFullPermissionsList() {
+		return backendReader.getFullPermissionsList();
+	}
+	
+}

Core/src/main/java/fr/pandacube/lib/core/permissions/PermissionsBackendWriter.java

@@ -0,0 +1,293 @@
+package fr.pandacube.lib.core.permissions;
+
+import com.google.common.base.Preconditions;
+
+import fr.pandacube.lib.core.db.DB;
+import fr.pandacube.lib.core.db.DBException;
+import fr.pandacube.lib.core.permissions.SQLPermissions.EntityType;
+
+/* package */ class PermissionsBackendWriter {
+	
+	
+	/* package */ void addSelfPermission(String name, EntityType type, String permission, String server, String world) {
+		Preconditions.checkNotNull(name, "name cannot be null");
+		Preconditions.checkNotNull(type, "type cannot be null");
+		Preconditions.checkNotNull(permission, "permission cannot be null");
+		Preconditions.checkArgument(world == null || server != null, "world not null but server is null");
+		name = name.toLowerCase();
+		permission = permission.toLowerCase();
+		if (server != null) server = server.toLowerCase();
+		if (world != null) world = world.toLowerCase();
+		
+		if (hasEntry(name, type, "permissions", permission, server, world))
+			throw new IllegalStateException("Permission already set");
+		addEntry(name, type, "permissions", permission, server, world);
+	}
+	
+	/* package */ void removeSelfPermission(String name, EntityType type, String permission, String server, String world) {
+		Preconditions.checkNotNull(name, "name cannot be null");
+		Preconditions.checkNotNull(type, "type cannot be null");
+		Preconditions.checkNotNull(permission, "permission cannot be null");
+		Preconditions.checkArgument(world == null || server != null, "world not null but server is null");
+		name = name.toLowerCase();
+		permission = permission.toLowerCase();
+		if (server != null) server = server.toLowerCase();
+		if (world != null) world = world.toLowerCase();
+		
+		if (!deleteEntry(name, type, "permissions", permission, server, world))
+			throw new IllegalStateException("Permission was not set");
+	}
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	/* package */ void setGroupDefault(String name, boolean deflt) {
+		Preconditions.checkNotNull(name, "name cannot be null");
+		name = name.toLowerCase();
+		try {
+			SQLPermissions entry = DB.getFirst(SQLPermissions.class,
+					SQLPermissions.name.like(name)
+					.and(SQLPermissions.type.eq(EntityType.Group.getCode()))
+					.and(SQLPermissions.key.like("default"))
+					);
+			if (entry == null && !deflt) {
+				return;
+			}
+			else if (entry != null && deflt) {
+				// update
+				if ("true".equals(entry.get(SQLPermissions.value)))
+					return;
+				entry.set(SQLPermissions.value, "true");
+				entry.save();
+				return;
+			}
+			else if (entry != null && !deflt) {
+				// delete
+				entry.delete();
+			}
+			else {
+				// insert
+				addEntry(name, EntityType.Group, "default", "true", null, null);
+			}
+		} catch (DBException e) {
+			throw new RuntimeException(e);
+		}
+	}
+	
+	
+	
+	
+	
+	
+	/* package */ void setSelfPrefix(String name, EntityType type, String prefix) {
+		Preconditions.checkNotNull(name, "name cannot be null");
+		Preconditions.checkNotNull(type, "type cannot be null");
+		name = name.toLowerCase();
+		
+		try {
+			SQLPermissions entry = DB.getFirst(SQLPermissions.class,
+					SQLPermissions.name.like(name)
+					.and(SQLPermissions.type.eq(type.getCode()))
+					.and(SQLPermissions.key.like("prefix"))
+					);
+			if (entry == null && prefix == null) {
+				return;
+			}
+			else if (entry != null && prefix != null) {
+				// update
+				entry.set(SQLPermissions.value, prefix);
+				entry.save();
+				return;
+			}
+			else if (entry != null && prefix == null) {
+				// delete
+				entry.delete();
+			}
+			else {
+				// insert
+				addEntry(name, type, "prefix", prefix, null, null);
+			}
+		} catch (DBException e) {
+			throw new RuntimeException(e);
+		}
+	}
+	
+	/* package */ void setSelfSuffix(String name, EntityType type, String suffix) {
+		Preconditions.checkNotNull(name, "name cannot be null");
+		Preconditions.checkNotNull(type, "type cannot be null");
+		name = name.toLowerCase();
+		
+		try {
+			SQLPermissions entry = DB.getFirst(SQLPermissions.class,
+					SQLPermissions.name.like(name)
+					.and(SQLPermissions.type.eq(type.getCode()))
+					.and(SQLPermissions.key.like("suffix"))
+					);
+			if (entry == null && suffix == null) {
+				return;
+			}
+			else if (entry != null && suffix != null) {
+				// update
+				entry.set(SQLPermissions.value, suffix);
+				entry.save();
+				return;
+			}
+			else if (entry != null && suffix == null) {
+				// delete
+				entry.delete();
+			}
+			else {
+				// insert
+				addEntry(name, type, "suffix", suffix, null, null);
+			}
+		} catch (DBException e) {
+			throw new RuntimeException(e);
+		}
+	}
+	
+	
+	
+
+	
+	/* package */ void addInheritance(String name, EntityType type, String inheritance) {
+		Preconditions.checkNotNull(name, "name cannot be null");
+		Preconditions.checkNotNull(type, "type cannot be null");
+		Preconditions.checkNotNull(inheritance, "inheritance cannot be null");
+		name = name.toLowerCase();
+		inheritance = inheritance.toLowerCase();
+		String key = type == EntityType.Group ? "inheritances" : "groups";
+		
+		try {
+			SQLPermissions entry = DB.getFirst(SQLPermissions.class,
+					SQLPermissions.name.like(name)
+					.and(SQLPermissions.type.eq(type.getCode()))
+					.and(SQLPermissions.key.like(key))
+					.and(SQLPermissions.value.like(inheritance))
+					);
+			if (entry != null)
+				throw new IllegalStateException("Inheritance already set");
+			addEntry(name, type, key, inheritance, null, null);
+		} catch (DBException e) {
+			new RuntimeException(e);
+		}
+		
+	}
+	
+	/* package */ void removeInheritance(String name, EntityType type, String inheritance) {
+		Preconditions.checkNotNull(name, "name cannot be null");
+		Preconditions.checkNotNull(type, "type cannot be null");
+		Preconditions.checkNotNull(inheritance, "inheritance cannot be null");
+		name = name.toLowerCase();
+		inheritance = inheritance.toLowerCase();
+		String key = type == EntityType.Group ? "inheritances" : "groups";
+		
+		try {
+			int deleted = DB.delete(SQLPermissions.class,
+					SQLPermissions.name.like(name)
+					.and(SQLPermissions.type.eq(type.getCode()))
+					.and(SQLPermissions.key.like(key))
+					.and(SQLPermissions.value.like(inheritance))
+					);
+			if (deleted == 0)
+				throw new IllegalStateException("Inheritance was not set");
+		} catch (DBException e) {
+			throw new RuntimeException(e);
+		}
+	}
+	
+	/* package */ void setInheritance(String name, EntityType type, String inheritance) {
+		Preconditions.checkNotNull(name, "name cannot be null");
+		Preconditions.checkNotNull(type, "type cannot be null");
+		Preconditions.checkNotNull(inheritance, "inheritance cannot be null");
+		name = name.toLowerCase();
+		inheritance = inheritance.toLowerCase();
+		String key = type == EntityType.Group ? "inheritances" : "groups";
+		
+		try {
+			DB.delete(SQLPermissions.class,
+					SQLPermissions.name.like(name)
+					.and(SQLPermissions.type.eq(type.getCode()))
+					.and(SQLPermissions.key.like(key))
+					);
+			addEntry(name, type, key, inheritance, null, null);
+		} catch (DBException e) {
+			throw new RuntimeException(e);
+		}
+	}
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	private boolean deleteEntry(String name, EntityType type,
+			String key, String value,
+			String server, String world) {
+		try {
+			return DB.delete(SQLPermissions.class,
+					SQLPermissions.name.like(name)
+					.and(SQLPermissions.type.eq(type.getCode()))
+					.and(SQLPermissions.key.like(key))
+					.and(SQLPermissions.value.like(value))
+					.and(server == null ? SQLPermissions.server.isNull() : SQLPermissions.server.like(server))
+					.and(world == null ? SQLPermissions.world.isNull() : SQLPermissions.world.like(world))
+					) >= 1;
+		} catch (DBException e) {
+			throw new RuntimeException(e);
+		}
+	}
+	
+	private boolean hasEntry(String name, EntityType type,
+			String key, String value,
+			String server, String world) {
+		return getEntry(name, type, key, value, server, world) != null;
+	}
+	
+	private SQLPermissions getEntry(String name, EntityType type,
+			String key, String value,
+			String server, String world) {
+		try {
+			return DB.getFirst(SQLPermissions.class,
+					SQLPermissions.name.like(name)
+					.and(SQLPermissions.type.eq(type.getCode()))
+					.and(SQLPermissions.key.like(key))
+					.and(SQLPermissions.value.like(value))
+					.and(server == null ? SQLPermissions.server.isNull() : SQLPermissions.server.like(server))
+					.and(world == null ? SQLPermissions.world.isNull() : SQLPermissions.world.like(world))
+					);
+		} catch (DBException e) {
+			throw new RuntimeException(e);
+		}
+	}
+	
+	private void addEntry(String name, EntityType type,
+			String key, String value,
+			String server, String world) {
+		SQLPermissions entry = new SQLPermissions()
+				.set(SQLPermissions.name, name)
+				.set(SQLPermissions.type, type.getCode())
+				.set(SQLPermissions.key, key)
+				.set(SQLPermissions.value, value)
+				.set(SQLPermissions.server, server)
+				.set(SQLPermissions.world, world);
+		try {
+			entry.save();
+		} catch (DBException e) {
+			throw new RuntimeException(e);
+		}
+	}
+	
+}

Core/src/main/java/fr/pandacube/lib/core/permissions/PermissionsCachedBackendReader.java

@@ -0,0 +1,307 @@
+package fr.pandacube.lib.core.permissions;
+
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.TreeSet;
+import java.util.UUID;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
+
+import fr.pandacube.lib.core.db.DB;
+import fr.pandacube.lib.core.db.DBException;
+import fr.pandacube.lib.core.db.SQLElementList;
+import fr.pandacube.lib.core.permissions.SQLPermissions.EntityType;
+import fr.pandacube.lib.core.util.Log;
+
+/* package */ class PermissionsCachedBackendReader
+{
+	/* package */ PermissionsCachedBackendReader() throws DBException {
+		clearAndResetCache();
+	}
+	
+	
+	
+	
+	private Cache<UUID, CachedPlayer> usersCache = CacheBuilder.newBuilder()
+			.expireAfterAccess(10, TimeUnit.MINUTES)
+			.build();
+	private Set<String> fullPermissionsList = new TreeSet<String>();
+	
+	/* package */ synchronized List<String> getFullPermissionsList() {
+		return new ArrayList<>(fullPermissionsList);
+	}
+	
+	/* package */ synchronized void clearPlayerCache(UUID playerId) {
+		usersCache.invalidate(playerId);
+	}
+	
+	/* package */ synchronized CachedPlayer getCachedPlayer(UUID playerId) {
+		try {
+			return usersCache.get(playerId, () -> {
+				try {
+					return initPlayer(playerId);
+				} catch (DBException e) {
+					throw new RuntimeException(e);
+				}
+			});
+		} catch (ExecutionException e) {
+			throw new RuntimeException(e);
+		}
+	}
+	
+	private CachedPlayer initPlayer(UUID playerId) throws DBException {
+		
+		SQLElementList<SQLPermissions> playerData = DB.getAll(SQLPermissions.class,
+				SQLPermissions.type.eq(EntityType.User.getCode())
+						.and(SQLPermissions.name.like(playerId.toString()))
+				);
+		
+		Map<String, List<SQLPermissions>> playerRawData = playerData.stream()
+				.collect(
+						Collectors.groupingBy(e -> e.get(SQLPermissions.key),
+								LinkedHashMap::new,
+								Collectors.toList())
+						);
+		
+		String playerSelfPrefix = null;
+		if (playerRawData.containsKey("prefix")) {
+			playerSelfPrefix = playerRawData.get("prefix").stream()
+					.map(e -> e.get(SQLPermissions.value))
+					.collect(Collectors.joining());
+		}
+				
+		String playerSelfSuffix = null;
+		if (playerRawData.containsKey("suffix")) {
+			playerSelfSuffix = playerRawData.get("suffix").stream()
+					.map(e -> e.get(SQLPermissions.value))
+					.collect(Collectors.joining());
+		}
+		
+		Map<ServerWorldKey, List<String>> playerSelfPerms = new LinkedHashMap<>();
+		if (playerRawData.containsKey("permissions")) {
+			playerSelfPerms = playerRawData.get("permissions").stream()
+					.peek(e -> {
+						String value = e.get(SQLPermissions.value);
+						fullPermissionsList.add(value.substring(value.startsWith("-") ? 1 : 0));
+					})
+					.collect(Collectors.groupingBy(e -> new ServerWorldKey(e.get(SQLPermissions.server), e.get(SQLPermissions.world)),
+									LinkedHashMap::new,
+									Collectors.mapping(e -> e.get(SQLPermissions.value),
+											Collectors.toList()
+											)
+									)
+							);
+		}
+		
+		CachedPlayer player = new CachedPlayer(playerId, playerSelfPrefix, playerSelfSuffix, playerSelfPerms);
+		
+		if (playerRawData.containsKey("groups")) {
+			playerRawData.get("groups").stream()
+					.map(e -> e.get(SQLPermissions.value))
+					.forEach(g -> {
+						player.groups.add(getCachedGroup(g));
+					});
+		}
+		
+		if (player.groups.isEmpty()) {
+			player.usingDefaultGroups = true;
+			getDefaultGroups().forEach(player.groups::add);
+		}
+		
+		return player;
+	}
+	
+	
+	
+	
+	private Map<String, CachedGroup> groupsCache = new LinkedHashMap<>();
+	private boolean cacheIsUpdating = false;
+	
+	
+	/* package */ synchronized CachedGroup getCachedGroup(String group) {
+		return groupsCache.getOrDefault(group, new CachedGroup(group, null, null, false, new LinkedHashMap<>()));
+	}
+	
+	/* package */ synchronized List<CachedGroup> getDefaultGroups() {
+		return groupsCache.values().stream()
+				.filter(g -> g.deflt)
+				.collect(Collectors.toList());
+	}
+
+	public List<CachedGroup> getGroups() {
+		return new ArrayList<>(groupsCache.values());
+	}
+	
+	/* package */ void clearAndResetCacheAsync(Runnable then) {
+		synchronized (this) {
+			if (cacheIsUpdating)
+				return;
+		}
+		Thread t = new Thread(() -> {
+			try {
+				clearAndResetCache();
+			} catch (Throwable e) {
+				Log.severe(e);
+			}
+			if (then != null)
+				then.run();
+		}, "Permissions Backend Group Cache Updater");
+		t.setDaemon(true);
+		t.start();
+	}
+	
+	private void clearAndResetCache() throws DBException {
+		synchronized (this) {
+			if (cacheIsUpdating)
+				return;
+			cacheIsUpdating = true;
+		}
+		
+		try {
+			Map<String, CachedGroup> newData = new LinkedHashMap<>();
+			Set<String> newFullPermissionsList = new TreeSet<>();
+			
+			SQLElementList<SQLPermissions> groupData = DB.getAll(SQLPermissions.class, SQLPermissions.type.eq(EntityType.Group.getCode()));
+			
+			Map<String, Map<String, List<SQLPermissions>>> groupsRawData = groupData.stream()
+					.collect(
+							Collectors.groupingBy(e -> e.get(SQLPermissions.name),
+									LinkedHashMap::new,
+									Collectors.groupingBy(e -> e.get(SQLPermissions.key),
+											LinkedHashMap::new,
+											Collectors.toList())
+									)
+							);
+			
+			for (String groupName : groupsRawData.keySet()) {
+				initGroup(groupName, groupsRawData, newData, newFullPermissionsList);
+			}
+			
+			synchronized (this) {
+				groupsCache.clear();
+				groupsCache.putAll(newData);
+				cacheIsUpdating = false;
+				usersCache.invalidateAll();
+				fullPermissionsList = newFullPermissionsList;
+			}
+		} finally {
+			synchronized (this) {
+				cacheIsUpdating = false;
+			}
+		}
+		
+		
+	}
+	
+	private void initGroup(String groupName, Map<String, Map<String, List<SQLPermissions>>> groupsRawData, Map<String, CachedGroup> newData, Set<String> newFullPermissionsList) {
+		if (newData.containsKey(groupName))
+			return;
+		
+		Map<String, List<SQLPermissions>> groupRawData = groupsRawData.getOrDefault(groupName, new LinkedHashMap<>());
+
+		boolean groupDefault = groupRawData.containsKey("default")
+				? "true".equals(groupRawData.get("default").get(0).get(SQLPermissions.value))
+				: false;
+		
+		String groupSelfPrefix = null;
+		if (groupRawData.containsKey("prefix")) {
+			groupSelfPrefix = groupRawData.get("prefix").stream()
+					.map(e -> e.get(SQLPermissions.value))
+					.collect(Collectors.joining());
+		}
+				
+		String groupSelfSuffix = null;
+		if (groupRawData.containsKey("suffix")) {
+			groupSelfSuffix = groupRawData.get("suffix").stream()
+					.map(e -> e.get(SQLPermissions.value))
+					.collect(Collectors.joining());
+		}
+		
+		Map<ServerWorldKey, List<String>> groupSelfPerms = new LinkedHashMap<>();
+		if (groupRawData.containsKey("permissions")) {
+			groupSelfPerms = groupRawData.get("permissions").stream()
+					.peek(e -> {
+						String value = e.get(SQLPermissions.value);
+						newFullPermissionsList.add(value.substring(value.startsWith("-") ? 1 : 0));
+					})
+					.collect(Collectors.groupingBy(e -> new ServerWorldKey(e.get(SQLPermissions.server), e.get(SQLPermissions.world)),
+									LinkedHashMap::new,
+									Collectors.mapping(e -> e.get(SQLPermissions.value),
+											Collectors.toList()
+											)
+									)
+							);
+		}
+		
+		CachedGroup group = new CachedGroup(groupName, groupSelfPrefix, groupSelfSuffix, groupDefault, groupSelfPerms);
+		
+		newData.put(groupName, group);
+		
+		
+		if (groupRawData.containsKey("inheritances")) {
+			groupRawData.get("inheritances").stream()
+					.map(e -> e.get(SQLPermissions.value))
+					.forEach(g -> {
+						initGroup(g, groupsRawData, newData, newFullPermissionsList);
+						group.inheritances.add(newData.get(g));
+					});
+		}
+	}
+	
+	
+	/* package */ static abstract class CachedEntity {
+		public final String name;
+		private final String selfPrefix, selfSuffix;
+		private final Map<ServerWorldKey, List<String>> selfPermissions;
+		
+		private CachedEntity(String n, String p, String s,
+				Map<ServerWorldKey, List<String>> perms) {
+			name = n; selfPrefix = p; selfSuffix = s; selfPermissions = perms;
+		}
+		
+		/* package */ List<String> getSelfPermissions(String server, String world) {
+			return selfPermissions.getOrDefault(new ServerWorldKey(server, world), new ArrayList<>());
+		}
+		
+		/* package */ Set<ServerWorldKey> getSelfPermissionsServerWorldKeys() {
+			return new TreeSet<>(selfPermissions.keySet());
+		}
+		
+		/* package */ String getSelfPrefix() {
+			return selfPrefix;
+		}
+		
+		/* package */ String getSelfSuffix() {
+			return selfSuffix;
+		}
+	}
+	
+	/* package */ static class CachedPlayer extends CachedEntity {
+		public final UUID playerId;
+		public final List<CachedGroup> groups = new ArrayList<>();
+		public boolean usingDefaultGroups = false;
+		private CachedPlayer(UUID pl, String p, String s,
+				Map<ServerWorldKey, List<String>> perms) {
+			super(pl.toString(), p, s, perms);
+			playerId = pl;
+		}
+	}
+	
+	/* package */ static class CachedGroup extends CachedEntity {
+		public final boolean deflt;
+		public final List<CachedGroup> inheritances = new ArrayList<>();
+		private CachedGroup(String n, String p, String s,
+				boolean dflt, Map<ServerWorldKey, List<String>> perms) {
+			super(n, p, s, perms);
+			deflt = dflt;
+		}
+	}
+    
+}

Core/src/main/java/fr/pandacube/lib/core/permissions/PermissionsResolver.java

@@ -0,0 +1,545 @@
+package fr.pandacube.lib.core.permissions;
+
+import java.util.ArrayList;
+import java.util.EnumSet;
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
+import com.google.common.base.Preconditions;
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
+
+import fr.pandacube.lib.core.chat.Chat;
+import fr.pandacube.lib.core.chat.ChatUtil;
+import fr.pandacube.lib.core.chat.ChatUtil.DisplayTreeNode;
+import fr.pandacube.lib.core.permissions.PermissionsCachedBackendReader.CachedEntity;
+import fr.pandacube.lib.core.permissions.PermissionsCachedBackendReader.CachedGroup;
+import fr.pandacube.lib.core.permissions.PermissionsCachedBackendReader.CachedPlayer;
+import fr.pandacube.lib.core.permissions.SQLPermissions.EntityType;
+import fr.pandacube.lib.core.players.PlayerFinder;
+import fr.pandacube.lib.core.util.Log;
+import net.md_5.bungee.api.ChatColor;
+import net.md_5.bungee.api.chat.BaseComponent;
+
+public class PermissionsResolver {
+
+	private PermissionsCachedBackendReader backendReader;
+	
+	/* package */ PermissionsResolver(PermissionsCachedBackendReader b) {
+		backendReader = b;
+	}
+	
+	/* package */ void clearPlayerFromCache(UUID player) {
+		String playerId = player.toString();
+		synchronized (effectivePermissionsCache) {
+			effectivePermissionsCache.asMap().keySet().removeIf(k -> k.type == EntityType.User && playerId.equals(k.name));
+		}
+		synchronized (effectiveDataCache) {
+			effectiveDataCache.asMap().keySet().removeIf(k -> k.type == EntityType.User && playerId.equals(k.name));
+		}
+	}
+	
+	/* package */ void clearCache() {
+		effectivePermissionsCache.invalidateAll();
+		effectiveDataCache.invalidateAll();
+	}
+	
+	
+	
+	
+	
+
+
+	/* package */ String getEffectivePrefix(String name, EntityType type) {
+		return getEffectiveData(name, type, DataType.PREFIX);
+	}
+	/* package */ String getEffectiveSuffix(String name, EntityType type) {
+		return getEffectiveData(name, type, DataType.SUFFIX);
+	}
+	
+	/* package */ DisplayTreeNode debugPrefix(String name, EntityType type) {
+		return debugData(name, type, DataType.PREFIX);
+	}
+	/* package */ DisplayTreeNode debugSuffix(String name, EntityType type) {
+		return debugData(name, type, DataType.SUFFIX);
+	}
+
+	private Cache<DataCacheKey, String> effectiveDataCache = CacheBuilder.newBuilder()
+			.expireAfterWrite(5, TimeUnit.MINUTES)
+			.build();
+	
+	private String getEffectiveData(String name, EntityType type, DataType dataType) {
+		Preconditions.checkNotNull(name, "name can’t be null");
+		Preconditions.checkNotNull(type, "type can’t be null");
+		
+		try {
+			return effectiveDataCache.get(new DataCacheKey(name, type, dataType), () -> {
+				return resolveData(name, type, dataType);
+			});
+		} catch (ExecutionException e) {
+			Log.severe(e);
+			return null;
+		}
+	}
+	
+	private DisplayTreeNode debugData(String name, EntityType type, DataType dataType) {
+		CachedEntity entity = (type == EntityType.User)
+				? backendReader.getCachedPlayer(UUID.fromString(name))
+				: backendReader.getCachedGroup(name);
+		return resolveData(entity, dataType).toDisplayTreeNode();
+	}
+	
+	private String resolveData(String name, EntityType type, DataType dataType) {
+		CachedEntity entity = (type == EntityType.User)
+				? backendReader.getCachedPlayer(UUID.fromString(name))
+				: backendReader.getCachedGroup(name);
+		DataResolutionNode resolutionResult = resolveData(entity, dataType);
+		
+		if (resolutionResult.conflict) {
+			Log.warning("For data " + dataType + ":");
+			BaseComponent[] cmps = ChatUtil.treeView(resolutionResult.toDisplayTreeNode(), true);
+			for (BaseComponent cmp : cmps)
+				Log.warning(cmp.toLegacyText());
+		}
+		
+		return resolutionResult.result != null ? resolutionResult.result : "";
+	}
+	
+	private DataResolutionNode resolveData(CachedEntity entity, DataType dataType) {
+		// self data
+		DataResolutionNode resolutionNode = new DataResolutionNode(entity, dataType.getter.apply(entity), null);
+		if (resolutionNode.result != null) {
+			return resolutionNode;
+		}
+		
+		// check inheritances data
+		List<CachedGroup> inheritances = resolutionNode.entity instanceof CachedPlayer
+				? ((CachedPlayer)resolutionNode.entity).groups
+				: ((CachedGroup)resolutionNode.entity).inheritances;
+		
+		List<DataResolutionNode> inheritedResults = new ArrayList<>(inheritances.size());
+		
+		for (CachedGroup inherited : inheritances) {
+			inheritedResults.add(resolveData(inherited, dataType));
+		}
+		
+		resolutionNode.inheritances.addAll(inheritedResults);
+		
+		if (inheritedResults.stream().anyMatch(g -> g.conflict))
+			resolutionNode.conflict = true;
+		
+		Set<String> inheritedPermissions = inheritedResults.stream()
+				.map(g -> g.result)
+				.filter(r -> r != null)
+				.collect(Collectors.toSet());
+		
+		if (inheritedPermissions.size() == 1)
+			resolutionNode.result = inheritedPermissions.iterator().next();
+		else if (inheritedPermissions.size() > 1) {
+			resolutionNode.conflictMessage = (resolutionNode.conflictMessage == null ? "" : (resolutionNode.conflictMessage + " ; "))
+					+ "Unsolvable conflict between inherited groups";
+			resolutionNode.conflict = true;
+		}
+		
+		return resolutionNode;
+	}
+	
+
+	private static class DataResolutionNode {
+		final CachedEntity entity;
+		String result;
+		String conflictMessage;
+		boolean conflict;
+		final List<DataResolutionNode> inheritances = new ArrayList<>();
+		public DataResolutionNode(CachedEntity e, String r, String c) {
+			entity = e; result = r; conflictMessage = c;
+			conflict = c != null;
+		}
+		
+		public DisplayTreeNode toDisplayTreeNode() {
+			Chat c = Chat.text(entity.name);
+			if (result == null)
+				c.then(Chat.text(" (non défini)").gray());
+			else
+				c.thenLegacyText(" \"" + ChatColor.RESET + result + ChatColor.RESET + "\"");
+			if (conflictMessage != null)
+				c.thenFailure(" " + conflictMessage);
+			DisplayTreeNode node = new DisplayTreeNode(c.get());
+			
+			if (result == null && conflict == false && !inheritances.isEmpty()) {
+				// there is nothing interesting to show on current or subnode
+				node.children.add(new DisplayTreeNode(Chat.text("(Inheritances hidden for brevety)").darkGray().italic().get()));
+				return node;
+			}
+			
+			inheritances.forEach(n -> node.children.add(n.toDisplayTreeNode()));
+			
+			return node;
+		}
+	}
+	
+	private static class DataCacheKey {
+		final String name;
+		final EntityType type;
+		final DataType dataType;
+		DataCacheKey(String n, EntityType t, DataType d) {
+			name = n; type = t; dataType = d;
+		}
+		@Override
+		public boolean equals(Object obj) {
+			if (obj == null || !(obj instanceof DataCacheKey))
+				return false;
+			DataCacheKey o = (DataCacheKey) obj;
+			return Objects.equals(name, o.name)
+					&& Objects.equals(type, o.type)
+					&& dataType == o.dataType;
+		}
+	}
+	
+	private enum DataType {
+		PREFIX(CachedEntity::getSelfPrefix),
+		SUFFIX(CachedEntity::getSelfSuffix);
+		
+		private final CachedEntityGetter<String> getter;
+		private DataType(CachedEntityGetter<String> g) {
+			getter = g;
+		}
+	}
+	
+	private interface CachedEntityGetter<R> {
+		R apply(CachedEntity a);
+	}
+	
+	
+	
+	
+	
+	
+
+	private Cache<PermCacheKey, PermState> effectivePermissionsCache = CacheBuilder.newBuilder()
+			.expireAfterWrite(5, TimeUnit.MINUTES)
+			.build();
+	
+	/* package */ Boolean getEffectivePermission(String name, EntityType type, String permission, String server, String world) {
+		Preconditions.checkNotNull(name, "name can’t be null");
+		Preconditions.checkNotNull(type, "type can’t be null");
+		Preconditions.checkNotNull(permission, "permission can’t be null");
+		Preconditions.checkArgument(world == null || server != null, "world not null but server is null");
+		
+		boolean reversed = false;
+		if (permission.startsWith("-")) {
+			permission = permission.substring(1);
+			reversed = true;
+		}
+		
+		String fPermission = permission == null ? null : permission.toLowerCase();
+		String fServer = server == null ? null : server.toLowerCase();
+		String fWorld = world == null ? null : world.toLowerCase();
+		try {
+			Boolean resolved = effectivePermissionsCache.get(new PermCacheKey(name, type, fPermission, fServer, fWorld), () -> {
+				return resolvePermission(name, type, fPermission, fServer, fWorld);
+			}).value;
+			return resolved == null ? null : (reversed != resolved.booleanValue());
+		} catch (ExecutionException e) {
+			Log.severe(e);
+			return null;
+		}
+	}
+	
+	/* package */ DisplayTreeNode debugPermission(String name, EntityType type, String permission, String server, String world) {
+		CachedEntity entity = (type == EntityType.User)
+				? backendReader.getCachedPlayer(UUID.fromString(name))
+				: backendReader.getCachedGroup(name);
+		return resolvePermission(entity, permission, server, world, true).toDisplayTreeNode();
+	}
+	
+	private PermState resolvePermission(String name, EntityType type, String permission, String server, String world) {
+		
+		CachedEntity entity = (type == EntityType.User)
+				? backendReader.getCachedPlayer(UUID.fromString(name))
+				: backendReader.getCachedGroup(name);
+		PermResolutionNode resolutionResult = resolvePermission(entity, permission, server, world, true);
+		
+		if (resolutionResult.conflict) {
+			Log.warning("For permission " + permission + ":");
+			BaseComponent[] cmps = ChatUtil.treeView(resolutionResult.toDisplayTreeNode(), true);
+			for (BaseComponent cmp : cmps)
+				Log.warning(cmp.toLegacyText());
+		}
+		
+		return resolutionResult.result;
+	}
+	
+	
+	
+	
+	
+	
+	private PermResolutionNode resolvePermission(CachedEntity entity, String permission, String server, String world, boolean checkInheritance) {
+		
+		// self and special permissions
+		PermResolutionNode resolutionNode = resolveSelfPermission(entity, permission, server, world);
+		if (resolutionNode.result != PermState.UNDEFINED) {
+			return resolutionNode;
+		}
+		
+		List<CachedGroup> inheritances = resolutionNode.entity instanceof CachedPlayer
+				? ((CachedPlayer)resolutionNode.entity).groups
+				: ((CachedGroup)resolutionNode.entity).inheritances;
+
+				
+		// check no-world/no-server permissions
+		if (server != null) {
+			PermResolutionNode noWNoSNode = resolvePermission(entity, permission, world != null ? server : null, null, false);
+			resolutionNode.inheritances.add(noWNoSNode);
+			if (noWNoSNode.conflict)
+				resolutionNode.conflict = true;
+			if (noWNoSNode.result != PermState.UNDEFINED) {
+				resolutionNode.result = noWNoSNode.result;
+				return resolutionNode;
+			}
+		}
+		
+		
+		if (!checkInheritance)
+			return resolutionNode;
+		
+		// check inheritances permissions
+		List<PermResolutionNode> inheritedResults = new ArrayList<>(inheritances.size() + 1);
+		
+		for (CachedGroup inherited : inheritances) {
+			inheritedResults.add(resolvePermission(inherited, permission, server, world, true));
+		}
+		
+		resolutionNode.inheritances.addAll(inheritedResults);
+		
+		if (inheritedResults.stream().anyMatch(g -> g.conflict))
+			resolutionNode.conflict = true;
+		
+		Set<PermState> inheritedPermissions = inheritedResults.stream()
+				.map(g -> g.result)
+				.collect(Collectors.toCollection(() -> EnumSet.noneOf(PermState.class)));
+		
+		boolean inheritancesGranted = inheritedPermissions.contains(PermState.GRANTED);
+		boolean inheritancesRevoqued = inheritedPermissions.contains(PermState.REVOQUED);
+		if (inheritancesGranted != inheritancesRevoqued) {
+			resolutionNode.result = inheritancesGranted ? PermState.GRANTED : PermState.REVOQUED;
+		}
+		else if (inheritancesGranted && inheritancesRevoqued) {
+			resolutionNode.conflictMessage = (resolutionNode.conflictMessage == null ? "" : (resolutionNode.conflictMessage + " ; "))
+					+ "Unsolvable conflict between inheritances";
+			resolutionNode.conflict = true;
+		}
+		
+		return resolutionNode;
+	}
+	
+	
+	
+	
+	private PermResolutionNode resolveSelfPermission(CachedEntity entity, String permission, String server, String world) {
+		// special permissions
+		PermState result = PermState.UNDEFINED;
+		String conflict = null;
+		List<ParsedSelfPermission> foundPerms = null;
+		
+		/*
+		 * Check for special permissions
+		 */
+		if (entity instanceof CachedPlayer) {
+			PermPlayer permP = new PermPlayer(((CachedPlayer) entity).playerId);
+			ParsedSelfPermission specialPerm = null;
+			if (permission.equals("pandacube.grade.isinstaff")) {
+				boolean res = permP.inheritsFromGroup("staff-base", true);
+				specialPerm = new ParsedSelfPermission(permission, res, PermType.SPECIAL);
+				conflict = "Special permission 'pandacube.grade.isinstaff' is deprecated. Use 'pandacube.inheritsfrom.<staffBaseGroup>' instead.";
+			}
+			else if (permission.startsWith("pandacube.grade.")) {
+				String group = permission.substring("pandacube.grade.".length());
+				boolean res = permP.inheritsFromGroup(group, false);
+				specialPerm = new ParsedSelfPermission(permission, res, PermType.SPECIAL);
+				conflict = "Special permission 'pandacube.grade.<groupName>' is deprecated. Use 'pandacube.ingroup.<groupName>' instead.";
+			}
+			else if (permission.startsWith("pandacube.ingroup.")) {
+				String group = permission.substring("pandacube.ingroup.".length());
+				boolean res = permP.inheritsFromGroup(group, false);
+				specialPerm = new ParsedSelfPermission(permission, res, PermType.SPECIAL);
+			}
+			else if (permission.startsWith("pandacube.inheritsfrom.")) {
+				String group = permission.substring("pandacube.inheritsfrom.".length());
+				boolean res = permP.inheritsFromGroup(group, true);
+				specialPerm = new ParsedSelfPermission(permission, res, PermType.SPECIAL);
+			}
+			else if (permission.startsWith("pandacube.inserver.")) {
+				String testedServer = permission.substring("pandacube.inserver.".length());
+				boolean res = testedServer.equals(server);
+				specialPerm = new ParsedSelfPermission(permission, res, PermType.SPECIAL);
+			}
+			else if (permission.startsWith("pandacube.inserverworld.")) {
+				String testedServerWorld = permission.substring("pandacube.inserverworld.".length());
+				boolean res = server != null && world != null && testedServerWorld.equals(server + "." + world);
+				specialPerm = new ParsedSelfPermission(permission, res, PermType.SPECIAL);
+			}
+			
+			if (specialPerm != null) {
+				result = PermState.of(specialPerm.result);
+				foundPerms = new ArrayList<>();
+				foundPerms.add(specialPerm);
+			}
+		}
+		
+		
+		
+		if (result == PermState.UNDEFINED) {
+			foundPerms = entity.getSelfPermissions(server, world).stream()
+					.map(p -> {
+						ParsedSelfPermission resNode = null;
+						if (p.equalsIgnoreCase(permission))
+							resNode = new ParsedSelfPermission(p, true, PermType.EXPLICIT);
+						else if (p.equalsIgnoreCase("-" + permission))
+							resNode = new ParsedSelfPermission(p, false, PermType.EXPLICIT);
+						else if (p.endsWith("*") && permission.startsWith(p.substring(0, p.length() - 1)))
+							resNode = new ParsedSelfPermission(p, true, PermType.WILDCARD);
+						else if (p.endsWith("*") && p.startsWith("-") && permission.startsWith(p.substring(1, p.length() - 1)))
+							resNode = new ParsedSelfPermission(p, false, PermType.WILDCARD);
+						return resNode;
+					})
+					.filter(p -> p != null)
+					.collect(Collectors.toList());
+
+				boolean explicitGranted = foundPerms.stream()
+						.anyMatch(n -> n.type == PermType.EXPLICIT && n.result == Boolean.TRUE);
+				boolean explicitRevoqued = foundPerms.stream()
+						.anyMatch(n -> n.type == PermType.EXPLICIT && n.result == Boolean.FALSE);
+				
+				boolean wildcardGranted = foundPerms.stream()
+						.anyMatch(n -> n.type == PermType.WILDCARD && n.result == Boolean.TRUE);
+				boolean wildcardRevoqued = foundPerms.stream()
+						.anyMatch(n -> n.type == PermType.WILDCARD && n.result == Boolean.FALSE);
+				
+				if (explicitGranted != explicitRevoqued) {
+					result = PermState.of(explicitGranted);
+					if (!wildcardGranted && !wildcardRevoqued) { }
+					else if (wildcardGranted && wildcardRevoqued) {
+						conflict = "Self explicit permission defined but conflict between self wildcard permissions";
+					}
+					else if (explicitGranted == wildcardGranted) {
+						conflict = "Unnecessary explicit permission already granted by self wildcard permissions"; // redundent explicit perm
+					}
+				}
+				else if (explicitGranted && explicitRevoqued) {
+					conflict = "Unsolvable conflit between explicit permissions";
+				}
+				else if (wildcardGranted != wildcardRevoqued) {
+					result = PermState.of(wildcardGranted);
+				}
+				else if (wildcardGranted && wildcardRevoqued) {
+					conflict = "Unsolvable conflit between wildcard permissions";
+				}
+		}
+		
+		PermResolutionNode node = new PermResolutionNode(entity, server, world, result, conflict);
+		node.selfPermissions = foundPerms;
+		
+		return node;
+	}
+	
+	private static class PermResolutionNode {
+		final CachedEntity entity;
+		final String server, world;
+		PermState result;
+		String conflictMessage;
+		boolean conflict;
+		List<ParsedSelfPermission> selfPermissions = new ArrayList<>();
+		final List<PermResolutionNode> inheritances = new ArrayList<>();
+		public PermResolutionNode(CachedEntity e, String s, String w, PermState r, String c) {
+			entity = e; server = s; world = w; result = r; conflictMessage = c;
+			conflict = c != null;
+		}
+		
+		public DisplayTreeNode toDisplayTreeNode() {
+			Chat c = Chat.chat()
+					.then(result == PermState.UNDEFINED ? Chat.dataText("■") : result == PermState.GRANTED ? Chat.successText("✔") : Chat.failureText("✘"))
+					.then(Chat.text(entity instanceof CachedPlayer ? PlayerFinder.getLastKnownName(((CachedPlayer)entity).playerId) : entity.name)
+							.color(entity instanceof CachedPlayer ? ChatColor.GOLD : ChatColor.DARK_AQUA)
+					);
+			if (server != null)
+				c.thenData(" s=" + server);
+			if (world != null)
+				c.thenData(" w=" + world);
+			if (conflictMessage != null)
+				c.then(Chat.failureText(" " + conflictMessage));
+			DisplayTreeNode node = new DisplayTreeNode(c.get());
+			
+			selfPermissions.forEach(p -> node.children.add(p.toDisplayTreeNode()));
+			
+			if (result == PermState.UNDEFINED && conflict == false && !inheritances.isEmpty()) {
+				// there is nothing interesting to show on current or subnode
+				node.children.add(new DisplayTreeNode(Chat.text("(Inheritances hidden for brevety)").darkGray().italic().get()));
+				return node;
+			}
+			
+			inheritances.forEach(n -> node.children.add(n.toDisplayTreeNode()));
+			
+			return node;
+		}
+	}
+	
+	private static class ParsedSelfPermission {
+		final String permission;
+		final boolean result;
+		final PermType type;
+		public ParsedSelfPermission(String p, boolean r, PermType t) {
+			permission = p;
+			result = r;
+			type = t;
+		}
+		public DisplayTreeNode toDisplayTreeNode() {
+			return new DisplayTreeNode(Chat.chat()
+					.then(result ? Chat.successText("✔") : Chat.failureText("✘"))
+					.then(Chat.text(permission).color(type == PermType.WILDCARD ? ChatColor.YELLOW : type == PermType.SPECIAL ? ChatColor.LIGHT_PURPLE : ChatColor.WHITE))
+					.get());
+		}
+	}
+	
+	private static class PermCacheKey {
+		final String name;
+		final EntityType type;
+		final String permission, server, world;
+		public PermCacheKey(String n, EntityType t, String p, String s, String w) {
+			name = n; type = t; permission = p; server = s; world = w;
+		}
+		@Override
+		public boolean equals(Object obj) {
+			if (obj == null || !(obj instanceof PermCacheKey))
+				return false;
+			PermCacheKey o = (PermCacheKey) obj;
+			return Objects.equals(name, o.name)
+					&& Objects.equals(type, o.type)
+					&& Objects.equals(permission, o.permission)
+					&& Objects.equals(server, o.server)
+					&& Objects.equals(world, o.world);
+		}
+	}
+	
+	private enum PermType {
+		EXPLICIT, WILDCARD, SPECIAL;
+	}
+	
+	private enum PermState {
+		GRANTED(true),
+		REVOQUED(false),
+		UNDEFINED(null);
+		final Boolean value;
+		private PermState(Boolean v) { value = v; }
+		private static PermState of(Boolean v) {
+			return v == null ? UNDEFINED : v ? GRANTED : REVOQUED;
+		}
+	}
+	
+}

Core/src/main/java/fr/pandacube/lib/core/permissions/SQLPermissions.java

@@ -0,0 +1,46 @@
+package fr.pandacube.lib.core.permissions;
+
+import fr.pandacube.lib.core.db.SQLElement;
+import fr.pandacube.lib.core.db.SQLField;
+
+public class SQLPermissions extends SQLElement<SQLPermissions> {
+
+	public SQLPermissions() {
+		super();
+	}
+
+	public SQLPermissions(int id) {
+		super(id);
+	}
+
+	@Override
+	protected String tableName() {
+		return "pandacube_permissions";
+	}
+
+	public static final SQLField<SQLPermissions, String> name = field(VARCHAR(64), false);
+	public static final SQLField<SQLPermissions, Integer> type = field(TINYINT, false);
+	public static final SQLField<SQLPermissions, String> key = field(VARCHAR(256), false);
+	public static final SQLField<SQLPermissions, String> value = field(VARCHAR(256), false);
+	public static final SQLField<SQLPermissions, String> server = field(VARCHAR(64), true);
+	public static final SQLField<SQLPermissions, String> world = field(VARCHAR(64), true);
+
+	
+	public enum EntityType {
+	    User,
+	    Group;
+
+	    public int getCode() {
+	        return ordinal();
+	    }
+
+	    public static EntityType getByCode(int code) {
+	    	if (code >= 0 && code < values().length)
+	    		return values()[code];
+	        return null;
+	    }
+	}
+	
+	
+	
+}

Core/src/main/java/fr/pandacube/lib/core/permissions/ServerWorldKey.java

@@ -0,0 +1,30 @@
+package fr.pandacube.lib.core.permissions;
+
+import java.util.Comparator;
+import java.util.Objects;
+
+public class ServerWorldKey implements Comparable<ServerWorldKey> {
+	public final String server, world;
+	ServerWorldKey(String s, String w) {
+		server = s; world = w;
+	}
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == null || !(obj instanceof ServerWorldKey))
+			return false;
+		ServerWorldKey o = (ServerWorldKey) obj;
+		return Objects.equals(server, o.server)
+				&& Objects.equals(world, o.world);
+	}
+	@Override
+	public int hashCode() {
+		return Objects.hash(world, server);
+	}
+	@Override
+	public int compareTo(ServerWorldKey o) {
+		Comparator<String> compStrNullFirst = Comparator.nullsFirst(String::compareToIgnoreCase);
+		return Comparator.comparing((ServerWorldKey k) -> k.server, compStrNullFirst)
+				.thenComparing(k -> k.world, compStrNullFirst)
+				.compare(this, o);
+	}
+}

Core/src/main/java/fr/pandacube/lib/core/players/IOffPlayer.java

@@ -0,0 +1,247 @@
+package fr.pandacube.lib.core.players;
+
+import java.util.UUID;
+
+import fr.pandacube.lib.core.chat.ChatColorUtil;
+import fr.pandacube.lib.core.db.DBException;
+import fr.pandacube.lib.core.permissions.PermPlayer;
+import fr.pandacube.lib.core.permissions.Permissions;
+import fr.pandacube.lib.core.util.Log;
+
+public interface IOffPlayer {
+	
+	
+	
+	
+	/*
+	 * General data and state
+	 */
+	
+	/**
+	 * @return the id of the player
+	 */
+	public abstract UUID getUniqueId();
+
+	/**
+	 * @return the last known player name of this player, or null if this player never joined the network.
+	 */
+	public default String getName() {
+		return PlayerFinder.getLastKnownName(getUniqueId());
+	}
+	
+	/**
+	 * Indicate if this player is connected to the current node (server or proxy, depending on interface implementation)
+	 * @return wether the player is online or not
+	 */
+	public abstract boolean isOnline();
+	
+	
+	
+	
+	/*
+	 * Related class instances
+	 */
+	
+	/**
+	 * Return the online instance of this player, if any exists.
+	 * May return itself if the current instance already represent an online player.
+	 */
+	public abstract IOnlinePlayer getOnlineInstance();
+	
+	/**
+	 * Get the database entry of this player, or null if the player never joined the network.
+	 * @throws DBException
+	 */
+	public default SQLPlayer getDbPlayer() throws DBException {
+		return SQLPlayer.getPlayerFromUUID(getUniqueId());
+	}
+
+	/**
+	 * Get the permission instance of this player. This will never return null.
+	 * @return the permission instance of this player 
+	 */
+	public default PermPlayer getPermissionUser() {
+		return Permissions.getPlayer(getUniqueId());
+	}
+	
+	
+	
+	
+	
+	
+	/*
+	 * Display name
+	 */
+	
+	/**
+	 * Returns the name of the player (if any), with eventual prefix and suffix depending on permission groups
+	 * (and team for bukkit implementation)
+	 * @return the display name of the player
+	 */
+	public abstract String getDisplayName();
+
+	/**
+	 * Get an updated display name of the user,
+	 * generated using eventual permission’s prefix(es) and suffix(es) of the player,
+	 * and with color codes translated to Minecraft’s native {@code §}.
+	 * @return 
+	 */
+	public default String getDisplayNameFromPermissionSystem() {
+		PermPlayer permU = getPermissionUser();
+		return ChatColorUtil.translateAlternateColorCodes('&',
+				permU.getPrefix() + getName() + permU.getSuffix());
+	}
+	
+	
+	
+	
+	
+	
+	/*
+	 * Permissions and groups
+	 */
+	
+	/**
+	 * Tells if this player has the specified permission.
+	 * If the player is online, this will redirect the
+	 * method call to the {@link IOnlinePlayer} instance,
+	 * that MUST override this current method to avoid recussive
+	 * loop.
+	 * If the player is offline, it just call the Pandacube
+	 * permission system.
+	 * @param permission the permission node to test
+	 * @return whether this player has the provided permission
+	 */
+	public default boolean hasPermission(String permission) {
+		IOnlinePlayer online = getOnlineInstance();
+		
+		if (online != null)
+			return online.hasPermission(permission);
+		
+		// at this point, the player is offline
+		Boolean res = getPermissionUser().hasPermission(permission);
+		return res != null ? res : false;
+	}
+
+	/**
+	 * Tells if the this player is part of the specified group
+	 * 
+	 * @param group the permissions group
+	 * @return <i>true</i> if this player is part of the group,
+	 *         <i>false</i> otherwise
+	 */
+	public default boolean isInGroup(String group) {
+		return getPermissionUser().isInGroup(group);
+	}
+
+	/**
+	 * Tells if this player is part of the staff, based on permission groups
+	 */
+	public default boolean isInStaff() {
+		return getPermissionUser().inheritsFromGroup("staff-base", true);
+	}
+	
+	
+	
+	
+	
+	
+	
+	/*
+	 * Ignore
+	 */
+	
+	/**
+	 * Tells if this player have the right to ignore the provided player
+	 * @param ignored the player that is potentially ignored by this player.
+	 *                If this parameter is null, this method returns false.
+	 */
+	public default boolean canIgnore(IOffPlayer ignored) {
+		if (ignored == null)
+			return false;
+		if (equals(ignored))
+			return false;
+		if (!isInStaff() && !ignored.isInStaff())
+			return true;
+		return hasPermission("pandacube.ignore.bypassfor." + ignored.getUniqueId());
+	}
+	
+	/**
+	 * Tells if the provided player have the right to ignore this player
+	 * @param ignorer the player that potentially ignore this player
+	 *                If this parameter is null, this method returns false.
+	 * @implNote the default implementation just calls {@link #canIgnore(IOffPlayer) ignorer.canIgnore(this)}.
+	 */
+	public default boolean canBeIgnoredBy(IOffPlayer ignorer) {
+		if (ignorer == null)
+			return false;
+		return ignorer.canIgnore(this);
+	}
+
+	/**
+	 * Determine if this player ignore the provided player.
+	 * @param ignored the player that is potentially ignored by this player.
+	 *                If this parameter is null, this method returns false.
+	 * @return true if this player have to right to ignore the provided player and is actually ignoring him.
+	 */
+	public default boolean isIgnoring(IOffPlayer ignored) {
+		if (!canIgnore(ignored))
+			return false;
+
+		try {
+			return SQLPlayerIgnore.isPlayerIgnoringPlayer(getUniqueId(), ignored.getUniqueId());
+		} catch (DBException e) {
+			Log.severe("Can't determine if a player ignore another player, because we can't access to the database", e);
+			return false;
+		}
+	}
+	
+
+	/**
+	 * Determine if the provided player ignore this player, taking into account the exception permissions.
+	 * @param ignorer the player that potentially ignore this player
+	 *                If this parameter is null, this method returns false.
+	 * @return true if the provided player have to right to ignore this player and is actually ignoring him.
+	 * @implNote the default implementation just calls {@link #isIgnoring(IOffPlayer) ignorer.isIgnoring(this)}.
+	 */
+	public default boolean isIgnoredBy(IOffPlayer ignorer) {
+		return ignorer.isIgnoring(this);
+	}
+	
+	
+	
+	
+	
+	/*
+	 * Modération
+	 */
+
+	/**
+	 * Retrieve the time when the player will be unmuted, or null if the player is not muted.
+	 * @return the timestamp in millisecond of when the player will be unmuted
+	 */
+	public default Long getMuteTimeout() {
+		try {
+			Long muteTimeout = getDbPlayer().get(SQLPlayer.muteTimeout);
+			if (muteTimeout == null || muteTimeout <= System.currentTimeMillis())
+				return null;
+			return muteTimeout;
+		} catch (DBException e) {
+			Log.severe(e);
+			return null;
+		}
+	}
+
+	/**
+	 * Tells if the player is currently muted, meaning that they cannot communicate
+	 * through the chat or private messages.
+	 * @return
+	 */
+	public default boolean isMuted() {
+		return getMuteTimeout() != null;
+	}
+	
+	
+	
+
+}

Core/src/main/java/fr/pandacube/lib/core/players/IOnlinePlayer.java

@@ -0,0 +1,300 @@
+package fr.pandacube.lib.core.players;
+
+import java.util.Locale;
+import java.util.UUID;
+
+import fr.pandacube.lib.core.chat.Chat;
+import fr.pandacube.lib.core.db.DBException;
+import net.md_5.bungee.api.chat.BaseComponent;
+
+public interface IOnlinePlayer extends IOffPlayer {
+	
+	
+	
+	
+	/*
+	 * General data and state
+	 */
+	
+	/**
+	 * @return The current name of this player
+	 * @implSpec The implementation is expected to call the environment API
+	 * (Bukkit/Bungee) to get the name of the player.
+	 */
+	public abstract String getName();
+	
+	public abstract String getServerName();
+	
+	public abstract String getWorldName();
+	
+	
+
+
+	/**
+	 * @throws IllegalStateException if the player was not found in the database (should never happen)
+	 * @throws DBException if a database access error occurs
+	 */
+	@Override
+	public default SQLPlayer getDbPlayer() throws DBException {
+		SQLPlayer p = SQLPlayer.getPlayerFromUUID(getUniqueId());
+		if (p == null)
+			throw new IllegalStateException("The player was not found in the database: " + getUniqueId());
+		return p;
+	}
+	
+	
+	
+	
+	
+	/*
+	 * Related class instances
+	 */
+	
+	
+	
+	
+	
+	
+	
+	/*
+	 * Permissions and groups
+	 */
+
+	/**
+	 * Tells if this online player has the specified permission.
+	 * @implSpec the implementation of this method must not directly or
+	 * indirectly call the method {@link IOffPlayer#hasPermission(String)},
+	 * or it may result in a {@link StackOverflowError}.
+	 */
+	public abstract boolean hasPermission(String permission);
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	/*
+	 * Vanish
+	 */
+	
+	public abstract boolean isVanished();
+	
+	public default boolean isVanishedFor(IOffPlayer other) {
+		if (!isVanished())
+			return false; // can see unvanished
+		
+		if (getUniqueId().equals(other.getUniqueId()))
+			return false; // can see themself
+		
+		if (!isInStaff() && other.isInStaff())
+			return false; // can see non-staff as a staff
+		
+		if (other.hasPermission("pandacube.vanish.see." + getUniqueId()))
+			return false; // can see if has a specific permission
+		
+		return true;
+	}
+	
+	
+	
+	
+	
+	
+	
+	/*
+	 * Sending packet and stuff to player
+	 */
+	
+	/**
+	 * Display the provided message in the player’s chat, if
+	 * the chat is activated.
+	 * @param message the message to display.
+	 */
+	public abstract void sendMessage(BaseComponent message);
+
+	/**
+	 * Display the provided message in the player’s chat, if
+	 * the chat is activated
+	 * @param message the message to display
+	 */
+	public default void sendMessage(Chat message) {
+		sendMessage(message.get());
+	}
+
+	/**
+	 * Display the provided message in the player’s chat, if
+	 * they allows to display CHAT messages
+	 * @param message the message to display.
+	 * @param sender the player causing the send of this message. Client side filtering may occur.
+	 * May be null if we don’t want client filtering, but still consider the message as CHAT message.
+	 * @implNote implementation of this method should not filter the send of the message, based on
+	 * the sender. This parameter is only there to be transmitted to the client, so client side filtering can
+	 * be processed.
+	 */
+	public abstract void sendMessage(BaseComponent message, UUID sender);
+
+	/**
+	 * Display the provided message in the player’s chat, if
+	 * they allows to display CHAT messages
+	 * @param message the message to display
+	 * @param sender the player causing the send of this message. Client side filtering may occur.
+	 * May be null if we don’t want client filtering, but still consider the message as CHAT message.
+	 */
+	public default void sendMessage(Chat message, UUID sender) {
+		sendMessage(message.get(), sender);
+	}
+	
+	/**
+	 * Display the provided message in the player’s chat, if the chat is
+	 * activated, prepended with the server prefix.
+	 * @param message the message to display
+	 */
+	public default void sendPrefixedMessage(BaseComponent message) {
+		sendMessage(IPlayerManager.prefixedAndColored(message));
+	}
+	
+	/**
+	 * Display the provided message in the player’s chat, if the chat is
+	 * activated, prepended with the server prefix.
+	 * @param message the message to display
+	 */
+	public default void sendPrefixedMessage(Chat message) {
+		sendPrefixedMessage(message.get());
+	}
+	
+	/**
+	 * Display a title in the middle of the screen.
+	 * @param title The big text
+	 * @param subtitle The less big text
+	 * @param fadeIn Fade in time in tick 
+	 * @param stay Stay time in tick
+	 * @param fadeOut Fade out time in tick
+	 */
+    public abstract void sendTitle(BaseComponent title, BaseComponent subtitle, int fadeIn, int stay, int fadeOut);
+	
+	/**
+	 * Display a title in the middle of the screen.
+	 * @param title The big text
+	 * @param subtitle The less big text
+	 * @param fadeIn Fade in time in tick 
+	 * @param stay Stay time in tick
+	 * @param fadeOut Fade out time in tick
+	 */
+    public default void sendTitle(Chat title, Chat subtitle, int fadeIn, int stay, int fadeOut) {
+    	sendTitle(title.get(), subtitle.get(), fadeIn, stay, fadeOut);
+    }
+	
+    /**
+     * Update the server brand field in the debug menu (F3) of the player
+     * (third line in 1.15 debug screen). Supports ChatColor codes but no
+     * line break.
+     * @param brand the server brand to send to the client.
+     */
+	public abstract void sendServerBrand(String brand);
+	
+	
+	
+	
+	
+	
+	
+	
+	/*
+	 * Client options
+	 */
+	
+
+	
+	public abstract ClientOptions getClientOptions();
+	
+	public interface ClientOptions {
+		
+		public Locale getLocale();
+		
+		public int getViewDistance();
+		
+		
+		
+		public boolean hasChatColorEnabled();
+		
+		/**
+		 * Tells if the client is configured to completely hide the chat to the
+		 * player. When this is the case, nothing is displayed in the chat box,
+		 * and the player can’t send any message or command.
+		 * @implSpec if the value is unknown, it is assumed that the chat is
+		 * fully visible.
+		 */
+		public boolean isChatHidden();
+
+		/**
+		 * Tells if the client is configured to display the chat normally.
+		 * When this is the case, chat messages and system messages are
+		 * displayed in the chat box, and the player can send messages and
+		 * commands.
+		 * @implSpec if the value is unknown, it is assumed that the chat is
+		 * fully visible.
+		 */
+		public boolean isChatFullyVisible();
+
+		/**
+		 * Tells if the client is configured to only display system messages
+		 * in the chat.
+		 * When this is the case, chat messages are hidden but system messages
+		 * are visible in the chat box, and the player can only send commands.
+		 * @implSpec if the value is unknown, it is assumed that the chat is
+		 * fully visible.
+		 */
+		public boolean isChatOnlyDisplayingSystemMessages();
+		
+		
+		
+		/**
+		 * Tells if the client has configured the main hand on the left.
+		 * @implSpec if the value is unknown, it is assumed that the main hand
+		 * is on the right.
+		 */
+		public boolean isLeftHanded();
+
+		/**
+		 * Tells if the client has configured the main hand on the right.
+		 * @implSpec if the value is unknown, it is assumed that the main hand
+		 * is on the right.
+		 */
+		public boolean isRightHanded();
+		
+		
+		
+		public boolean hasSkinCapeEnabled();
+		
+		public boolean hasSkinJacketEnabled();
+		
+		public boolean hasSkinLeftSleeveEnabled();
+		
+		public boolean hasSkinRightSleeveEnabled();
+		
+		public boolean hasSkinLeftPantsEnabled();
+		
+		public boolean hasSkinRightPantsEnabled();
+		
+		public boolean hasSkinHatsEnabled();
+		
+	}
+	
+	/**
+	 * Tells if the player can send chat messages or receive chat messages from
+	 * other players, according to their client configuration.
+	 * <br>
+	 * Chat messages represent public communication between players. By default,
+	 * it only include actual chat message. This method may be used in commands
+	 * like /me, /afk or the login/logout broadcasted messages
+	 * @return
+	 */
+	public default boolean canChat() {
+		return getClientOptions().isChatFullyVisible();
+	}
+	
+
+}

Core/src/main/java/fr/pandacube/lib/core/players/IPlayerManager.java

@@ -0,0 +1,436 @@
+package fr.pandacube.lib.core.players;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.TimeUnit;
+
+import com.google.common.base.Preconditions;
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.LoadingCache;
+
+import fr.pandacube.lib.core.chat.Chat;
+import fr.pandacube.lib.core.db.DB;
+import fr.pandacube.lib.core.db.DBInitTableException;
+import fr.pandacube.lib.core.util.Log;
+import net.md_5.bungee.api.chat.BaseComponent;
+
+public abstract class IPlayerManager<OP extends IOnlinePlayer, OF extends IOffPlayer> {
+	private static IPlayerManager<?, ?> instance;
+	public static synchronized IPlayerManager<?, ?> getInstance() { return instance; }
+	
+	
+	private Map<UUID, OP> onlinePlayers = Collections.synchronizedMap(new HashMap<>());
+	
+	private LoadingCache<UUID, OF> offlinePlayers = CacheBuilder.newBuilder()
+			.expireAfterWrite(10, TimeUnit.MINUTES)
+			.build(CacheLoader.from(pId -> newOffPlayerInstance(pId)));
+	
+	
+	public IPlayerManager() throws DBInitTableException {
+		synchronized (IPlayerManager.class) {
+			instance = this;
+		}
+		
+		DB.initTable(SQLPlayer.class);
+		DB.initTable(SQLPlayerNameHistory.class);
+		DB.initTable(SQLPlayerIgnore.class);
+	}
+	
+	
+	
+	protected void addPlayer(OP p) {
+		onlinePlayers.put(p.getUniqueId(), p);
+		offlinePlayers.invalidate(p.getUniqueId());
+	}
+	
+	protected OP removePlayer(UUID p) {
+		return onlinePlayers.remove(p);
+	}
+	
+	public OP get(UUID p) {
+		return onlinePlayers.get(p);
+	}
+	
+	public boolean isOnline(UUID p) {
+		return onlinePlayers.containsKey(p);
+	}
+	
+	public int getPlayerCount() {
+		return onlinePlayers.size();
+	}
+	
+	public List<OP> getAll() {
+		return new ArrayList<>(onlinePlayers.values());
+	}
+
+	public List<OP> getAllNotVanished() {
+		List<OP> players = getAll();
+		players.removeIf(op -> op.isVanished());
+		return players;
+	}
+	
+	public OF getOffline(UUID p) {
+		if (p == null)
+			return null;
+		OP online = get(p);
+		if (online != null) {
+			offlinePlayers.invalidate(p);
+			@SuppressWarnings("unchecked")
+			OF ret = (OF) online;
+			return ret;
+		}
+		// if not online
+		try {
+			return offlinePlayers.get(p); // load and cache new instance if necessary
+		} catch (Exception e) {
+			Log.severe("Cannot cache Offline player instance", e);
+			return newOffPlayerInstance(p);
+		}
+	}
+	
+	
+	
+	
+	protected abstract OF newOffPlayerInstance(UUID p);
+	
+	protected abstract void sendMessageToConsole(BaseComponent message);
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	public static BaseComponent prefixedAndColored(BaseComponent message) {
+		return Chat.chat()
+				.color(Chat.getConfig().broadcastColor)
+				.then(Chat.getConfig().prefix.get())
+				.then(message)
+				.get();
+	}
+	
+	
+	
+	
+	/*
+	 * Message broadcasting
+	 */
+	
+	// BaseComponent/Chat/String message
+	// boolean prefix
+	// boolean console = (permission == null)
+	// String permission = null
+	// UUID sourcePlayer = null
+	
+
+	/**
+	 * Broadcast a message to some or all players, and eventually to the console.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @param console if the message must be displayed in the console.
+	 * @param permission if not null, the message is only sent to player with this permission.
+	 * @param sourcePlayer specifiy the eventual player that is the source of the message.
+	 * 			If null, the message will be sent as a SYSTEM chat message.
+	 * 			If not null, the message will be sent as a CHAT message, and will not be sent
+	 * 			to players ignoring the provided player.
+	 * 			
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(BaseComponent message, boolean prefix, boolean console, String permission, UUID sourcePlayer) {
+		Preconditions.checkNotNull(message, "message cannot be null");
+		
+		IOffPlayer oSourcePlayer = getInstance().getOffline(sourcePlayer);
+		
+		if (prefix)
+			message = prefixedAndColored(message);
+
+		for (IOnlinePlayer op : getInstance().getAll()) {
+			if (permission != null && !(op.hasPermission(permission))) continue;
+			if (sourcePlayer != null && op.isIgnoring(oSourcePlayer))
+				continue;
+			
+			if (sourcePlayer != null) {
+				if (op.canIgnore(oSourcePlayer)) {
+					op.sendMessage(message, sourcePlayer); // CHAT message with UUID
+				}
+				else {
+					op.sendMessage(message, null); // CHAT message without UUID
+				}
+			}
+			else
+				op.sendMessage(message); // SYSTEM message
+		}
+
+		if (console)
+			getInstance().sendMessageToConsole(message);
+	}
+
+	/**
+	 * Broadcast a message to some or all players, and eventually to the console.
+	 * <p>
+	 * This method assumes this message is not caused by a specific player. To specify the source player, use
+	 * {@link #broadcast(BaseComponent, boolean, boolean, String, UUID)}.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @param console if the message must be displayed in the console.
+	 * @param permission if not null, the message is only sent to player with this permission.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(BaseComponent message, boolean prefix, boolean console, String permission) {
+		broadcast(message, prefix, console, permission, null);
+	}
+
+	/**
+	 * Broadcast a message to all players, and eventually to the console.
+	 * <p>
+	 * This method does not restrict the reception of the message to a specific permission. If you
+	 * want to specify a permission, use {@link #broadcast(BaseComponent, boolean, boolean, String, UUID)}.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @param console if the message must be displayed in the console.
+	 * @param sourcePlayer specifiy the eventual player that is the source of the message.
+	 * 			If null, the message will be sent as a SYSTEM chat message.
+	 * 			If not null, the message will be sent as a CHAT message, and will not be sent
+	 * 			to players ignoring the provided player.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(BaseComponent message, boolean prefix, boolean console, UUID sourcePlayer) {
+		broadcast(message, prefix, console, null, sourcePlayer);
+	}
+
+	/**
+	 * Broadcast a message to all players, and eventually to the console.
+	 * <p>
+	 * This method does not restrict the reception of the message to a specific permission. If you
+	 * want to specify a permission, use {@link #broadcast(BaseComponent, boolean, boolean, String)}.
+	 * <p>
+	 * This method assumes this message is not caused by a specific player. To specify the source player, use
+	 * {@link #broadcast(BaseComponent, boolean, boolean, UUID)}.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @param console if the message must be displayed in the console.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(BaseComponent message, boolean prefix, boolean console) {
+		broadcast(message, prefix, console, null, null);
+	}
+
+	/**
+	 * Broadcast a message to some or all players, and eventually to the console.
+	 * <p>
+	 * This method assumes this message is not caused by a specific player. To specify the source player, use
+	 * {@link #broadcast(BaseComponent, boolean, String, UUID)}.
+	 * <p>
+	 * This method decides to send the message to the console depending on whether {@code permission}
+	 * is null (will send to console) or not (will not send to console). To specify this behaviour, use
+	 * {@link #broadcast(BaseComponent, boolean, boolean, String)}.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @param permission if not null, the message is only sent to player with this permission (but not to console).
+	 * 			If null, the message will be sent to all players and to console.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(BaseComponent message, boolean prefix, String permission) {
+		broadcast(message, prefix, (permission == null), permission, null);
+	}
+
+	/**
+	 * Broadcast a message to all players, and to the console.
+	 * <p>
+	 * This method does not restrict the reception of the message to a specific permission. If you
+	 * want to specify a permission, use {@link #broadcast(BaseComponent, boolean, String, UUID)}.
+	 * <p>
+	 * This method sends the message to the console. To change this behaviour, use
+	 * {@link #broadcast(BaseComponent, boolean, boolean, UUID)}.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @param sourcePlayer specifiy the eventual player that is the source of the message.
+	 * 			If null, the message will be sent as a SYSTEM chat message.
+	 * 			If not null, the message will be sent as a CHAT message, and will not be sent
+	 * 			to players ignoring the provided player.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(BaseComponent message, boolean prefix, UUID sourcePlayer) {
+		broadcast(message, prefix, true, null, sourcePlayer);
+	}
+
+	/**
+	 * Broadcast a message to all players, and to the console.
+	 * <p>
+	 * This method assumes this message is not caused by a specific player. To specify the source player, use
+	 * {@link #broadcast(BaseComponent, boolean, UUID)}.
+	 * <p>
+	 * This method does not restrict the reception of the message to a specific permission. If you
+	 * want to specify a permission, use {@link #broadcast(BaseComponent, boolean, String)}.
+	 * <p>
+	 * This method sends the message to the console. To change this behaviour, use
+	 * {@link #broadcast(BaseComponent, boolean, boolean)}.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(BaseComponent message, boolean prefix) {
+		broadcast(message, prefix, true, null, null);
+	}
+	
+	
+	
+
+	/**
+	 * Broadcast a message to some or all players, and eventually to the console.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @param console if the message must be displayed in the console.
+	 * @param permission if not null, the message is only sent to player with this permission.
+	 * @param sourcePlayer specifiy the eventual player that is the source of the message.
+	 * 			If null, the message will be sent as a SYSTEM chat message.
+	 * 			If not null, the message will be sent as a CHAT message, and will not be sent
+	 * 			to players ignoring the provided player.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(Chat message, boolean prefix, boolean console, String permission, UUID sourcePlayer) {
+		Preconditions.checkNotNull(message, "message cannot be null");
+		broadcast(message.get(), prefix, console, permission, sourcePlayer);
+	}
+
+	/**
+	 * Broadcast a message to some or all players, and eventually to the console.
+	 * <p>
+	 * This method assumes this message is not caused by a specific player. To specify the source player, use
+	 * {@link #broadcast(BaseComponent, boolean, boolean, String, UUID)}.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @param console if the message must be displayed in the console.
+	 * @param permission if not null, the message is only sent to player with this permission.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(Chat message, boolean prefix, boolean console, String permission) {
+		broadcast(message, prefix, console, permission, null);
+	}
+
+	/**
+	 * Broadcast a message to all players, and eventually to the console.
+	 * <p>
+	 * This method does not restrict the reception of the message to a specific permission. If you
+	 * want to specify a permission, use {@link #broadcast(BaseComponent, boolean, boolean, String, UUID)}.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @param console if the message must be displayed in the console.
+	 * @param sourcePlayer specifiy the eventual player that is the source of the message.
+	 * 			If null, the message will be sent as a SYSTEM chat message.
+	 * 			If not null, the message will be sent as a CHAT message, and will not be sent
+	 * 			to players ignoring the provided player.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(Chat message, boolean prefix, boolean console, UUID sourcePlayer) {
+		broadcast(message, prefix, console, null, sourcePlayer);
+	}
+
+	/**
+	 * Broadcast a message to all players, and eventually to the console.
+	 * <p>
+	 * This method does not restrict the reception of the message to a specific permission. If you
+	 * want to specify a permission, use {@link #broadcast(BaseComponent, boolean, boolean, String)}.
+	 * <p>
+	 * This method assumes this message is not caused by a specific player. To specify the source player, use
+	 * {@link #broadcast(BaseComponent, boolean, boolean, UUID)}.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @param console if the message must be displayed in the console.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(Chat message, boolean prefix, boolean console) {
+		broadcast(message, prefix, console, null, null);
+	}
+
+	/**
+	 * Broadcast a message to some or all players, and eventually to the console.
+	 * <p>
+	 * This method assumes this message is not caused by a specific player. To specify the source player, use
+	 * {@link #broadcast(BaseComponent, boolean, String, UUID)}.
+	 * <p>
+	 * This method decides to send the message to the console depending on whether {@code permission}
+	 * is null (will send to console) or not (will not send to console). To specify this behaviour, use
+	 * {@link #broadcast(BaseComponent, boolean, boolean, String)}.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @param permission if not null, the message is only sent to player with this permission (but not to console).
+	 * 			If null, the message will be sent to all players and to console.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(Chat message, boolean prefix, String permission) {
+		broadcast(message, prefix, (permission == null), permission, null);
+	}
+
+	/**
+	 * Broadcast a message to all players, and to the console.
+	 * <p>
+	 * This method does not restrict the reception of the message to a specific permission. If you
+	 * want to specify a permission, use {@link #broadcast(BaseComponent, boolean, String, UUID)}.
+	 * <p>
+	 * This method sends the message to the console. To change this behaviour, use
+	 * {@link #broadcast(BaseComponent, boolean, boolean, UUID)}.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @param sourcePlayer specifiy the eventual player that is the source of the message.
+	 * 			If null, the message will be sent as a SYSTEM chat message.
+	 * 			If not null, the message will be sent as a CHAT message, and will not be sent
+	 * 			to players ignoring the provided player.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(Chat message, boolean prefix, UUID sourcePlayer) {
+		broadcast(message, prefix, true, null, sourcePlayer);
+	}
+
+	/**
+	 * Broadcast a message to all players, and to the console.
+	 * <p>
+	 * This method assumes this message is not caused by a specific player. To specify the source player, use
+	 * {@link #broadcast(BaseComponent, boolean, UUID)}.
+	 * <p>
+	 * This method does not restrict the reception of the message to a specific permission. If you
+	 * want to specify a permission, use {@link #broadcast(BaseComponent, boolean, String)}.
+	 * <p>
+	 * This method sends the message to the console. To change this behaviour, use
+	 * {@link #broadcast(BaseComponent, boolean, boolean)}.
+	 *
+	 * @param message the message to send.
+	 * @param prefix if the server prefix will be prepended to the message.
+	 * @throws IllegalArgumentException if message is null.
+	 */
+	public static void broadcast(Chat message, boolean prefix) {
+		broadcast(message, prefix, true, null, null);
+	}
+	
+	
+	
+	
+	
+	
+}

Core/src/main/java/fr/pandacube/lib/core/players/PlayerFinder.java

@@ -0,0 +1,342 @@
+package fr.pandacube.lib.core.players;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.function.ToIntBiFunction;
+import java.util.stream.Collectors;
+
+import org.javatuples.Pair;
+
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.LoadingCache;
+import com.google.common.collect.ImmutableList;
+import com.google.common.util.concurrent.UncheckedExecutionException;
+
+import fr.pandacube.lib.core.commands.SuggestionsSupplier;
+import fr.pandacube.lib.core.db.DB;
+import fr.pandacube.lib.core.db.DBException;
+import fr.pandacube.lib.core.db.SQLOrderBy;
+import fr.pandacube.lib.core.util.LevenshteinDistance;
+import fr.pandacube.lib.core.util.Log;
+
+/*
+ * Etape de recherche de joueur :
+ * utiliser directement la table pandacube_player
+ * chercher dans l'historique de login
+ */
+public class PlayerFinder {
+	
+	private static Cache<UUID, String> playerLastKnownName = CacheBuilder.newBuilder()
+			.expireAfterWrite(2, TimeUnit.MINUTES)
+			.maximumSize(1000)
+			.build();
+
+	private static Cache<Pair<String, Boolean>, UUID> playerId = CacheBuilder.newBuilder()
+			.expireAfterWrite(2, TimeUnit.MINUTES)
+			.maximumSize(1000)
+			.build();
+	
+	public static void clearCacheEntry(UUID pId, String pName) {
+		playerLastKnownName.invalidate(pId);
+		playerId.invalidate(Pair.with(pName.toLowerCase(), true));
+		playerId.invalidate(Pair.with(pName.toLowerCase(), false));
+	}
+
+	public static String getLastKnownName(UUID id) {
+		if (id == null) return null;
+		
+		try {
+			return playerLastKnownName.get(id, () -> {
+				try {
+					return getDBPlayer(id).get(SQLPlayer.playerName); // eventual NPE will be ignored
+				} catch (NullPointerException|DBException e) {
+					Log.severe("Can't search for player name from uuid in database", e);
+					throw e;
+				}
+			});
+		} catch (ExecutionException e) {
+			// ignored (ORM Exception)
+		} catch (UncheckedExecutionException e) {
+			Log.severe("Can’t retrieve player last known name of " + id, e);
+		}
+
+		return null;
+	}
+
+	/**
+	 * Cherche un UUID de compte en se basant sur le pseudo passé en
+	 * paramètre. La méthode
+	 * cherchera d'abord dans les derniers pseudos connus. Puis, cherchera la
+	 * dernière personne à
+	 * s'être connecté avec ce pseudo sur le serveur.
+	 *
+	 * @param exactName le pseudo complet, insensible à la casse, et dans un
+	 *        format de pseudo valide
+	 * @param old si on doit chercher dans les anciens pseudos de joueurs
+	 * @return l'UUID du joueur si trouvé, null sinon
+	 */
+	public static UUID getPlayerId(String exactName, boolean old) {
+		if (!isValidPlayerName(exactName))
+			return null; // évite une recherche inutile dans la base de donnée
+
+		try {
+			return playerId.get(Pair.with(exactName.toLowerCase(), old), () -> {
+				try {
+					SQLPlayer el = DB.getFirst(SQLPlayer.class,
+							SQLPlayer.playerName.like(exactName.replace("_", "\\_")),
+							SQLOrderBy.desc(SQLPlayer.lastTimeInGame));
+					/*
+					 * Si il n'y a pas 1 élément, alors soit le pseudo n'a jamais été attribué
+					 * soit il a été changé, et nous avons l'ancien possesseur et le nouveau possesseur du pseudo.
+					 */
+					if (el != null)
+						return el.get(SQLPlayer.playerId);
+				} catch (Exception e) {
+					Log.severe("Can't search for uuid from player name in database", e);
+				}
+				
+				if (old) {
+					try {
+						SQLPlayerNameHistory el = DB.getFirst(SQLPlayerNameHistory.class,
+								SQLPlayerNameHistory.playerName.like(exactName.replace("_", "\\_")),
+								SQLOrderBy.desc(SQLPlayerNameHistory.timeChanged));
+						if (el != null) return el.get(SQLPlayerNameHistory.playerId);
+					} catch (Exception e) {
+						Log.severe("Can't search for uuid from old player name in database", e);
+					}
+				}
+				
+				throw new Exception(); // ignored
+			});
+		} catch (ExecutionException e) {
+			// ignored
+		}
+		
+		return null;
+
+	}
+	
+	/**
+	 * Parse a player name or a player ID from the provided string, and returns the UUID of the player, if found.
+	 * @param nameOrId a valid player name, or a UUID in the format of {@link UUID#toString()}
+	 * @return the id of the player, or null if not found or if the input is invalid.
+	 */
+	public static UUID parsePlayer(String nameOrId) {
+		if (nameOrId == null)
+			return null;
+		if (isValidPlayerName(nameOrId))
+			return getPlayerId(nameOrId, true);
+		try {
+			return UUID.fromString(nameOrId);
+		} catch (Exception e) {
+			return null;
+		}
+	}
+
+	public static boolean isValidPlayerName(String name) {
+		if (name == null) return false;
+		return name.matches("[0-9a-zA-Z_]{2,16}");
+	}
+
+	public static SQLPlayer getDBPlayer(UUID id) throws Exception {
+		if (id == null) return null;
+		return SQLPlayer.getPlayerFromUUID(id);
+	}
+	
+	
+	
+	
+	
+	
+	
+	private static final SuggestionsSupplier<?> TAB_PLAYER_OFFLINE = (sender, tokenIndex, token, args) -> {
+		if (token.length() < 3) {
+			return Collections.emptyList();
+		}
+		List<SearchResponseProfile> list = findPlayer(token, 10).profiles;
+		if (!list.isEmpty() && list.get(0).d == 0)
+			return Collections.singletonList(list.get(0).name);
+		return list.stream().map(p -> p.name).collect(Collectors.toList());
+	};
+	
+	@SuppressWarnings("unchecked")
+	public static final <S> SuggestionsSupplier<S> TAB_PLAYER_OFFLINE() {
+		return (SuggestionsSupplier<S>) TAB_PLAYER_OFFLINE;
+	}
+	
+	
+	public static SearchResponse findPlayer(String query, int resultsCount) {
+		SearchResponse cacheData = searchCache.getUnchecked(query.toLowerCase());
+		cacheData = new SearchResponse(cacheData.profiles.subList(0, Math.min(resultsCount, cacheData.profiles.size())));
+		return cacheData;
+	}
+	
+
+	public static int SEARCH_MAX_DISTANCE = 20;
+	public static int MISSING_CHAR_DISTANCE = 1;
+	public static int SURPLUS_CHAR_DISTANCE = 8;
+	public static int DIFF_CHAR_DISTANCE = 8;
+	public static int CLOSE_CHAR_DISTANCE = 4;
+	
+	public static int OLD_NICK_MULTIPLIER = 2;
+	
+	
+	private static List<List<Character>> CONFUSABLE_CHARACTERS = ImmutableList.of(
+			ImmutableList.of('o', '0'),
+			ImmutableList.of('i', '1', 'l'),
+			ImmutableList.of('b', '8')
+	);
+	private static ToIntBiFunction<Character, Character> CHAR_DISTANCE = (c1, c2) -> {
+		if (c1.equals(c2))
+			return 0;
+		for (List<Character> charTab : CONFUSABLE_CHARACTERS) {
+			if (charTab.contains(c1) && charTab.contains(c2))
+				return CLOSE_CHAR_DISTANCE;
+		}
+		return DIFF_CHAR_DISTANCE;
+	};
+	
+	private static LoadingCache<String, List<Pair<String, UUID>>> namesCache = CacheBuilder.newBuilder()
+			.expireAfterWrite(2, TimeUnit.MINUTES)
+			.maximumSize(1)
+			.build(CacheLoader.from((String k) -> {
+				List<Pair<String, UUID>> cached = new ArrayList<>();
+				try {
+					DB.forEach(SQLPlayerNameHistory.class, el -> {
+						cached.add(Pair.with(el.get(SQLPlayerNameHistory.playerName), el.get(SQLPlayerNameHistory.playerId)));
+					});
+				} catch (DBException e) {
+					throw new RuntimeException(e);
+				}
+				return cached;
+			}));
+	
+	private static LoadingCache<String, SearchResponse> searchCache = CacheBuilder.newBuilder()
+			.expireAfterWrite(2, TimeUnit.MINUTES)
+			.maximumSize(100)
+			.build(CacheLoader.from((String query) -> {
+				List<FoundName> foundNames = new ArrayList<>();
+				try {
+					namesCache.get("").forEach(el -> {
+						String name = el.getValue0();
+						int dist = new LevenshteinDistance(name.toLowerCase(), query, SURPLUS_CHAR_DISTANCE, MISSING_CHAR_DISTANCE, CHAR_DISTANCE).getCurrentDistance();
+						if (dist <= SEARCH_MAX_DISTANCE) {
+							FoundName n = new FoundName();
+							n.dist = dist;
+							n.id = el.getValue1();
+							n.name = name;
+							foundNames.add(n);
+						}
+					});
+				} catch (ExecutionException e) {
+					throw new RuntimeException(e);
+				}
+				
+				Map<UUID, SearchResponseProfile> profiles = new HashMap<>();
+				
+				foundNames.forEach(foundName -> {
+					SearchResponseProfile profile = profiles.getOrDefault(foundName.id, new SearchResponseProfile());
+					if (profile.id == null) {
+						profile.id = foundName.id.toString();
+						profile.names = new ArrayList<>();
+						profiles.put(foundName.id, profile);
+					}
+					profile.names.add(foundName);
+				});
+				
+				try {
+					DB.forEach(SQLPlayer.class, SQLPlayer.playerId.in(profiles.keySet()), el -> {
+						SearchResponseProfile profile = profiles.get(el.get(SQLPlayer.playerId));
+						if (profile == null)
+							return;
+						profile.displayName = el.get(SQLPlayer.playerDisplayName);
+						profile.name = el.get(SQLPlayer.playerName);
+						FoundName currentName = null;
+						for (FoundName foundName : profile.names) {
+							if (foundName.name.equals(profile.name)) {
+								currentName = foundName;
+								profile.d = foundName.dist;
+								break;
+							}
+						}
+						
+						if (currentName != null) {
+							profile.names.remove(currentName);
+						}
+						else {
+							int min = Integer.MAX_VALUE;
+							for (FoundName foundName : profile.names) {
+								if (foundName.dist < min) {
+									min = foundName.dist;
+								}
+							}
+							profile.d = min * OLD_NICK_MULTIPLIER + 1;
+							
+							if (profile.d > SEARCH_MAX_DISTANCE)
+								profiles.remove(el.get(SQLPlayer.playerId));
+						}
+						
+						// unset id field in old names entries to save memory and network activity
+						profile.names.forEach(n -> n.id = null);
+					});
+				} catch (DBException e) {
+					throw new RuntimeException(e);
+				}
+				
+				
+				List<SearchResponseProfile> searchResponseList = new ArrayList<>(profiles.values());
+				searchResponseList.sort(null);
+				
+				searchResponseList.removeIf(p -> {
+					if (p.name == null) { // if the current name was not found in the database
+						Log.warning("Cannot find current name for player " + p.id, new Throwable());
+						return true;
+					}
+					return false;
+				});
+				
+				return new SearchResponse(searchResponseList);
+			}));
+	
+	
+	public static class SearchResponseProfile implements Comparable<SearchResponseProfile> {
+		public int d;
+		public String id;
+		public String name;
+		public String displayName;
+		public List<FoundName> names;
+		
+		@Override
+		public int compareTo(SearchResponseProfile o) {
+			return Integer.compare(d, o.d);
+		}
+	}
+	
+	private static class FoundName {
+		public UUID id;
+		public String name;
+		public int dist;
+	}
+	
+
+	
+	public static class SearchResponse {
+		public final List<SearchResponseProfile> profiles;
+		private SearchResponse(List<SearchResponseProfile> p) {
+			profiles = p;
+		}
+	}
+	
+	
+	
+	
+
+}

Core/src/main/java/fr/pandacube/lib/core/players/SQLPlayer.java

@@ -0,0 +1,78 @@
+package fr.pandacube.lib.core.players;
+
+import java.sql.Date;
+import java.util.Set;
+import java.util.UUID;
+
+import fr.pandacube.lib.core.db.DB;
+import fr.pandacube.lib.core.db.DBException;
+import fr.pandacube.lib.core.db.SQLElement;
+import fr.pandacube.lib.core.db.SQLElementList;
+import fr.pandacube.lib.core.db.SQLField;
+
+public class SQLPlayer extends SQLElement<SQLPlayer> {
+
+	public SQLPlayer() {
+		super();
+	}
+
+	public SQLPlayer(int id) {
+		super(id);
+	}
+
+	/*
+	 * Nom de la table
+	 */
+	@Override
+	protected String tableName() {
+		return "pandacube_player";
+	}
+
+	/*
+	 * Champs de la table
+	 */
+	public static final SQLField<SQLPlayer, UUID> playerId = field(CHAR36_UUID, false);
+	public static final SQLField<SQLPlayer, String> playerName = field(VARCHAR(16), false);
+	public static final SQLField<SQLPlayer, UUID> token = field(CHAR36_UUID, true);
+	public static final SQLField<SQLPlayer, String> mailCheck = field(VARCHAR(255), true);
+	public static final SQLField<SQLPlayer, String> password = field(VARCHAR(255), true);
+	public static final SQLField<SQLPlayer, String> mail = field(VARCHAR(255), true);
+	public static final SQLField<SQLPlayer, String> playerDisplayName = field(VARCHAR(255),
+			false);
+	public static final SQLField<SQLPlayer, Long> firstTimeInGame = field(BIGINT, false, 0L);
+	public static final SQLField<SQLPlayer, Long> timeWebRegister = field(BIGINT, true);
+	public static final SQLField<SQLPlayer, Long> lastTimeInGame = field(BIGINT, true);
+	public static final SQLField<SQLPlayer, Long> lastWebActivity = field(BIGINT, false, 0L);
+	public static final SQLField<SQLPlayer, String> onlineInServer = field(VARCHAR(32), true);
+	public static final SQLField<SQLPlayer, String> skinURL = field(VARCHAR(255), true);
+	public static final SQLField<SQLPlayer, Boolean> isVanish = field(BOOLEAN, false,
+			(Boolean) false);
+	public static final SQLField<SQLPlayer, Date> birthday = field(DATE, true);
+	public static final SQLField<SQLPlayer, Integer> lastYearCelebratedBirthday = field(INT,
+			false, 0);
+	public static final SQLField<SQLPlayer, Long> banTimeout = field(BIGINT, true);
+	public static final SQLField<SQLPlayer, Long> muteTimeout = field(BIGINT, true);
+	public static final SQLField<SQLPlayer, Boolean> isWhitelisted = field(BOOLEAN, false,
+			(Boolean) false);
+	public static final SQLField<SQLPlayer, Long> bambou = field(BIGINT, false, 0L);
+	public static final SQLField<SQLPlayer, String> grade = field(VARCHAR(36), false, "default");
+
+	
+	
+	public static SQLPlayer getPlayerFromUUID(UUID pId) throws DBException {
+		if (pId == null)
+			return null;
+		return DB.getFirst(SQLPlayer.class, playerId.eq(pId));
+	}
+	
+	
+	public static SQLElementList<SQLPlayer> getPlayersFromUUIDs(Set<UUID> playerIds) throws DBException {
+		
+		if (playerIds == null || playerIds.isEmpty()) {
+			return new SQLElementList<>();
+		}
+
+		return DB.getAll(SQLPlayer.class, playerId.in(playerIds));
+		
+	}
+}

Core/src/main/java/fr/pandacube/lib/core/players/SQLPlayerIgnore.java

@@ -0,0 +1,59 @@
+package fr.pandacube.lib.core.players;
+
+import java.util.Map;
+import java.util.UUID;
+
+import fr.pandacube.lib.core.db.DB;
+import fr.pandacube.lib.core.db.DBException;
+import fr.pandacube.lib.core.db.SQLElement;
+import fr.pandacube.lib.core.db.SQLFKField;
+
+public class SQLPlayerIgnore extends SQLElement<SQLPlayerIgnore> {
+
+	public SQLPlayerIgnore() {
+		super();
+	}
+
+	public SQLPlayerIgnore(int id) {
+		super(id);
+	}
+
+	@Override
+	protected String tableName() {
+		return "pandacube_player_ignore";
+	}
+
+	public static final SQLFKField<SQLPlayerIgnore, UUID, SQLPlayer> ignorer = foreignKey(false, SQLPlayer.class, SQLPlayer.playerId);
+	public static final SQLFKField<SQLPlayerIgnore, UUID, SQLPlayer> ignored = foreignKey(false, SQLPlayer.class, SQLPlayer.playerId);
+
+
+	public static SQLPlayerIgnore getPlayerIgnoringPlayer(UUID ignorer, UUID ignored) throws DBException {
+		return DB.getFirst(SQLPlayerIgnore.class, SQLPlayerIgnore.ignorer.eq(ignorer).and(SQLPlayerIgnore.ignored.eq(ignored)));
+	}
+
+	public static boolean isPlayerIgnoringPlayer(UUID ignorer, UUID ignored) throws DBException {
+		return getPlayerIgnoringPlayer(ignorer, ignored) != null;
+	}
+
+	public static void setPlayerIgnorePlayer(UUID ignorer, UUID ignored, boolean newIgnoreState) throws DBException {
+		SQLPlayerIgnore el = getPlayerIgnoringPlayer(ignorer, ignored);
+		if (el == null && newIgnoreState) {
+			el = new SQLPlayerIgnore();
+			el.set(SQLPlayerIgnore.ignorer, ignorer);
+			el.set(SQLPlayerIgnore.ignored, ignored);
+			el.save();
+			return;
+		}
+		if (el != null && !newIgnoreState) {
+			el.delete();
+			return;
+		}
+
+	}
+
+	public static Map<UUID, SQLPlayer> getIgnoredPlayer(UUID ignorer) throws DBException {
+		return DB.getAll(SQLPlayerIgnore.class, SQLPlayerIgnore.ignorer.eq(ignorer))
+				.getReferencedEntriesInGroups(SQLPlayerIgnore.ignored);
+	}
+
+}

Core/src/main/java/fr/pandacube/lib/core/players/SQLPlayerNameHistory.java

@@ -0,0 +1,53 @@
+package fr.pandacube.lib.core.players;
+
+import java.util.UUID;
+
+import fr.pandacube.lib.core.db.DB;
+import fr.pandacube.lib.core.db.DBException;
+import fr.pandacube.lib.core.db.SQLElement;
+import fr.pandacube.lib.core.db.SQLFKField;
+import fr.pandacube.lib.core.db.SQLField;
+import fr.pandacube.lib.core.util.Log;
+
+public class SQLPlayerNameHistory extends SQLElement<SQLPlayerNameHistory> {
+	
+	public SQLPlayerNameHistory() {
+		super();
+	}
+
+	public SQLPlayerNameHistory(int id) {
+		super(id);
+	}
+
+	@Override
+	protected String tableName() {
+		return "pandacube_player_name_history";
+	}
+	
+	public static final SQLFKField<SQLPlayerNameHistory, UUID, SQLPlayer> playerId = foreignKey(false, SQLPlayer.class, SQLPlayer.playerId);
+	public static final SQLField<SQLPlayerNameHistory, String> playerName = field(VARCHAR(16), false);
+	public static final SQLField<SQLPlayerNameHistory, Long> timeChanged = field(BIGINT, true);
+	
+	
+	public static void updateIfNeeded(UUID player, String name, long time) {
+		SQLPlayerNameHistory histEl;
+		try {
+			histEl = DB.getFirst(SQLPlayerNameHistory.class, playerId.eq(player).and(playerName.eq(name)));
+
+			if (histEl == null) {
+				histEl = new SQLPlayerNameHistory();
+				histEl.set(playerId, player);
+				histEl.set(playerName, name);
+				histEl.set(timeChanged, time);
+				histEl.save();
+			}
+			else if (time < histEl.get(timeChanged)) {
+				histEl.set(timeChanged, time);
+				histEl.save();
+			}
+		} catch (DBException e) {
+			Log.severe(e);
+		}
+	}
+
+}

Core/src/main/java/fr/pandacube/lib/core/search/SearchEngine.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.search;
+package fr.pandacube.lib.core.search;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -14,7 +14,7 @@ import com.google.common.base.Preconditions;
 import com.google.common.cache.Cache;
 import com.google.common.cache.CacheBuilder;
 
-import fr.pandacube.util.Log;
+import fr.pandacube.lib.core.util.Log;
 
 /**
  * Utility class to manage searching among a set of

Core/src/main/java/fr/pandacube/lib/core/search/SearchResult.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.search;
+package fr.pandacube.lib.core.search;
 
 import java.util.Set;
 

Core/src/main/java/fr/pandacube/lib/core/util/AmountPerTimeLimiter.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.util.ArrayList;
 import java.util.List;

Core/src/main/java/fr/pandacube/lib/core/util/BiMap.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.util.Collections;
 import java.util.HashMap;

Core/src/main/java/fr/pandacube/lib/core/util/Callback.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 @FunctionalInterface
 public interface Callback<T> {

Core/src/main/java/fr/pandacube/lib/core/util/DistanceUtil.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.measurement;
+package fr.pandacube.lib.core.util;
 
 import java.text.DecimalFormat;
 import java.util.Arrays;

Core/src/main/java/fr/pandacube/lib/core/util/EnumUtil.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 public class EnumUtil {
 

Core/src/main/java/fr/pandacube/lib/core/util/FileUtils.java

@@ -0,0 +1,32 @@
+package fr.pandacube.lib.core.util;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+
+public class FileUtils {
+	
+	
+	
+	public static void delete(File target) {
+		if (target.isDirectory())
+			for (File child : target.listFiles())
+				delete(child);
+		target.delete();
+	}
+	
+	
+	public static void copy(File source, File target) throws IOException {
+		if (target.exists() && !target.isDirectory()) {
+			throw new IllegalStateException("target file already exists: " + target);
+		}
+		if (source.isDirectory()) {
+			target.mkdir();
+			for (String child : source.list())
+				copy(new File(source, child), new File(target, child));
+		}
+		else if (source.isFile()) {
+			Files.copy(source.toPath(), target.toPath());
+		}
+	}
+}

Core/src/main/java/fr/pandacube/lib/core/util/GifDecoder.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.net.URL;
 import java.util.ArrayList;

Core/src/main/java/fr/pandacube/lib/core/util/JArithmeticInterpreter.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 //******************************************************************************
 //***

Core/src/main/java/fr/pandacube/lib/core/util/LevenshteinDistance.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.util.Objects;
 import java.util.function.ToIntBiFunction;

Core/src/main/java/fr/pandacube/lib/core/util/ListUtil.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.util.List;
 

Core/src/main/java/fr/pandacube/lib/core/util/Log.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.logging.Level;

Core/src/main/java/fr/pandacube/lib/core/util/MappedListView.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.util.AbstractList;
 import java.util.List;

Core/src/main/java/fr/pandacube/lib/core/util/MemoryUtil.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.measurement;
+package fr.pandacube.lib.core.util;
 
 import java.text.DecimalFormat;
 

Core/src/main/java/fr/pandacube/lib/core/util/MinecraftVersion.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.util.ArrayList;
 import java.util.Arrays;

Core/src/main/java/fr/pandacube/lib/core/util/MinecraftWebUtil.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 public class MinecraftWebUtil {
 	
@@ -10,6 +10,8 @@ public class MinecraftWebUtil {
 		
 		@param 
 	*/
+	// TODO update to support RGB colors (Bungee and Essentials notation).
+	// See JavaScript implementation at https://www.pandacube.fr/assets/js/global.js
 	public static String fromMinecraftColorCodeToHTML(char code_prefix, String ligne)
 	{
 		String color_char = "0123456789abcdefr";

Core/src/main/java/fr/pandacube/lib/core/util/OfflineUUID.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.nio.charset.Charset;
 import java.util.UUID;

Core/src/main/java/fr/pandacube/lib/core/util/RandomUtil.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.util.List;
 import java.util.Random;

Core/src/main/java/fr/pandacube/lib/core/util/ReflexionUtil.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;

Core/src/main/java/fr/pandacube/lib/core/util/ServerPropertyFile.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.io.BufferedReader;
 import java.io.BufferedWriter;

Core/src/main/java/fr/pandacube/lib/core/util/StringUtil.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.util.List;
 

Core/src/main/java/fr/pandacube/lib/core/util/ThrowableUtil.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;

Core/src/main/java/fr/pandacube/lib/core/util/Tick.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.measurement;
+package fr.pandacube.lib.core.util;
 
 public class Tick {
 	

Core/src/main/java/fr/pandacube/lib/core/util/TimeUtil.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util.measurement;
+package fr.pandacube.lib.core.util;
 
 import java.time.Instant;
 import java.time.LocalDateTime;
@@ -9,7 +9,9 @@ import java.util.Calendar;
 import java.util.Collections;
 import java.util.GregorianCalendar;
 import java.util.List;
+import java.util.Locale;
 import java.util.Objects;
+import java.util.TimeZone;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicLong;
@@ -17,22 +19,20 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
-import fr.pandacube.Pandacube;
-import fr.pandacube.util.StringUtil;
-import fr.pandacube.util.commands.SuggestionsSupplier;
+import fr.pandacube.lib.core.commands.SuggestionsSupplier;
 
 public class TimeUtil {
 	
 
-	private static DateTimeFormatter cmpDayOfWeekFormatter = DateTimeFormatter.ofPattern("EEE", Pandacube.LOCALE);
-	private static DateTimeFormatter dayOfWeekFormatter = DateTimeFormatter.ofPattern("EEEE", Pandacube.LOCALE);
-	private static DateTimeFormatter dayOfMonthFormatter = DateTimeFormatter.ofPattern("d", Pandacube.LOCALE);
-	private static DateTimeFormatter cmpMonthFormatter = DateTimeFormatter.ofPattern("MMM", Pandacube.LOCALE);
-	private static DateTimeFormatter monthFormatter = DateTimeFormatter.ofPattern("MMMM", Pandacube.LOCALE);
-	private static DateTimeFormatter yearFormatter = DateTimeFormatter.ofPattern("uuuu", Pandacube.LOCALE);
+	private static DateTimeFormatter cmpDayOfWeekFormatter = DateTimeFormatter.ofPattern("EEE", Locale.getDefault());
+	private static DateTimeFormatter dayOfWeekFormatter = DateTimeFormatter.ofPattern("EEEE", Locale.getDefault());
+	private static DateTimeFormatter dayOfMonthFormatter = DateTimeFormatter.ofPattern("d", Locale.getDefault());
+	private static DateTimeFormatter cmpMonthFormatter = DateTimeFormatter.ofPattern("MMM", Locale.getDefault());
+	private static DateTimeFormatter monthFormatter = DateTimeFormatter.ofPattern("MMMM", Locale.getDefault());
+	private static DateTimeFormatter yearFormatter = DateTimeFormatter.ofPattern("uuuu", Locale.getDefault());
 
-	private static DateTimeFormatter HMSFormatter = DateTimeFormatter.ofPattern("HH:mm:ss", Pandacube.LOCALE);
-	private static DateTimeFormatter HMFormatter = DateTimeFormatter.ofPattern("HH:mm", Pandacube.LOCALE);
+	private static DateTimeFormatter HMSFormatter = DateTimeFormatter.ofPattern("HH:mm:ss", Locale.getDefault());
+	private static DateTimeFormatter HMFormatter = DateTimeFormatter.ofPattern("HH:mm", Locale.getDefault());
 	
 	
 	
@@ -124,7 +124,7 @@ public class TimeUtil {
 	
 	
 	private static LocalDateTime toLocalDateTime(long msTime) {
-		return Instant.ofEpochMilli(msTime).atZone(Pandacube.TIMEZONE.toZoneId()).toLocalDateTime();
+		return Instant.ofEpochMilli(msTime).atZone(TimeZone.getDefault().toZoneId()).toLocalDateTime();
 	}
 	
 	

Core/src/main/java/fr/pandacube/lib/core/util/TypeConverter.java

@@ -1,4 +1,4 @@
-package fr.pandacube.util;
+package fr.pandacube.lib.core.util;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -49,7 +49,7 @@ public class TypeConverter {
 	public static int toPrimInt(Object o) {
 		Integer val = toInteger(o);
 		if (val == null)
-			throw new ConvertionException("null values can't converted to primitive int");
+			throw new ConvertionException("null values can't be converted to primitive int");
 		return val;
 	}
 	

Core/src/main/java/fr/pandacube/util/DirUtils.java

@@ -1,15 +0,0 @@
-package fr.pandacube.util;
-
-import java.io.File;
-
-public class DirUtils {
-	
-	
-	
-	public static void delete(final File target) {
-		if (target.isDirectory())
-			for (File child : target.listFiles())
-				delete(child);
-		target.delete();
-	}
-}

Core/src/main/java/fr/pandacube/util/orm/ORMException.java

@@ -1,18 +0,0 @@
-package fr.pandacube.util.orm;
-
-public class ORMException extends Exception {
-	private static final long serialVersionUID = 1L;
-
-	public ORMException(Throwable initCause) {
-		super(initCause);
-	}
-
-	public ORMException(String message, Throwable initCause) {
-		super(message, initCause);
-	}
-
-	public ORMException(String message) {
-		super(message);
-	}
-
-}

Core/src/main/java/fr/pandacube/util/orm/ORMInitTableException.java

@@ -1,14 +0,0 @@
-package fr.pandacube.util.orm;
-
-public class ORMInitTableException extends ORMException {
-	private static final long serialVersionUID = 1L;
-
-	/* package */ <E extends SQLElement<E>> ORMInitTableException(Class<E> tableElem) {
-		super("Error while initializing table " + ((tableElem != null) ? tableElem.getName() : "null"));
-	}
-
-	/* package */ <E extends SQLElement<E>> ORMInitTableException(Class<E> tableElem, Throwable t) {
-		super("Error while initializing table " + ((tableElem != null) ? tableElem.getName() : "null"), t);
-	}
-
-}

Core/src/main/java/fr/pandacube/util/orm/SQLWhere.java

@@ -1,43 +0,0 @@
-package fr.pandacube.util.orm;
-
-import java.util.List;
-
-import org.javatuples.Pair;
-
-import fr.pandacube.util.Log;
-
-public abstract class SQLWhere<E extends SQLElement<E>> {
-
-	public abstract Pair<String, List<Object>> toSQL() throws ORMException;
-
-	@Override
-	public String toString() {
-		try {
-			return toSQL().getValue0();
-		} catch (ORMException e) {
-			Log.warning(e);
-			return "[SQLWhere.toString() error (see logs)]";
-		}
-	}
-	
-	public SQLWhereAnd<E> and(SQLWhere<E> other) {
-		return new SQLWhereAnd<E>().and(this).and(other);
-	}
-	
-	public SQLWhereOr<E> or(SQLWhere<E> other) {
-		return new SQLWhereOr<E>().or(this).or(other);
-	}
-	
-	public static <E extends SQLElement<E>> SQLWhereAnd<E> and() {
-		return new SQLWhereAnd<>();
-	}
-	
-	public static <E extends SQLElement<E>> SQLWhereOr<E> or() {
-		return new SQLWhereOr<>();
-	}
-	
-	public static String escapeLike(String str) {
-		return str.replace("\\", "\\\\").replace("_", "\\_").replace("%", "\\%");
-	}
-
-}

Core/src/main/java/fr/pandacube/util/orm/SQLWhereAnd.java

@@ -1,15 +0,0 @@
-package fr.pandacube.util.orm;
-
-public class SQLWhereAnd<E extends SQLElement<E>> extends SQLWhereChain<E> {
-
-	/* package */ SQLWhereAnd() {
-		super(SQLBoolOp.AND);
-	}
-	
-	@Override
-	public SQLWhereAnd<E> and(SQLWhere<E> other) {
-		add(other);
-		return this;
-	}
-
-}

Core/src/main/java/fr/pandacube/util/orm/SQLWhereChain.java

@@ -1,58 +0,0 @@
-package fr.pandacube.util.orm;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.javatuples.Pair;
-
-public abstract class SQLWhereChain<E extends SQLElement<E>> extends SQLWhere<E> {
-
-	private SQLBoolOp operator;
-	protected List<SQLWhere<E>> conditions = new ArrayList<>();
-
-	/* package */ SQLWhereChain(SQLBoolOp op) {
-		if (op == null) throw new IllegalArgumentException("op can't be null");
-		operator = op;
-	}
-
-	protected void add(SQLWhere<E> sqlWhere) {
-		if (sqlWhere == null) throw new IllegalArgumentException("sqlWhere can't be null");
-		conditions.add(sqlWhere);
-	}
-	
-	@Override
-	public Pair<String, List<Object>> toSQL() throws ORMException {
-		if (conditions.isEmpty()) {
-			throw new ORMException("SQLWhereChain needs at least one element inside !");
-		}
-		
-		String sql = "";
-		List<Object> params = new ArrayList<>();
-		boolean first = true;
-
-		for (SQLWhere<E> w : conditions) {
-			if (!first) sql += " " + operator.sql + " ";
-			first = false;
-
-			Pair<String, List<Object>> ret = w.toSQL();
-			sql += "(" + ret.getValue0() + ")";
-			params.addAll(ret.getValue1());
-		}
-
-		return new Pair<>(sql, params);
-	}
-
-	/* package */ enum SQLBoolOp {
-		/** Equivalent to SQL "<code>AND</code>" */
-		AND("AND"),
-		/** Equivalent to SQL "<code>OR</code>" */
-		OR("OR");
-		/* package */ final String sql;
-
-		private SQLBoolOp(String s) {
-			sql = s;
-		}
-
-	}
-
-}

Core/src/main/java/fr/pandacube/util/orm/SQLWhereComp.java

@@ -1,58 +0,0 @@
-package fr.pandacube.util.orm;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.javatuples.Pair;
-
-/* package */ class SQLWhereComp<E extends SQLElement<E>> extends SQLWhere<E> {
-
-	private SQLField<E, ?> left;
-	private SQLComparator comp;
-	private Object right;
-
-	/**
-	 * Compare a field with a value
-	 *
-	 * @param l the field at left of the comparison operator. Can't be null
-	 * @param c the comparison operator, can't be null
-	 * @param r the value at right of the comparison operator. Can't be null
-	 */
-	/* package */ <T> SQLWhereComp(SQLField<E, T> l, SQLComparator c, T r) {
-		if (l == null || r == null || c == null)
-			throw new IllegalArgumentException("All arguments for SQLWhereComp constructor can't be null");
-		left = l;
-		comp = c;
-		right = r;
-	}
-
-	@Override
-	public Pair<String, List<Object>> toSQL() throws ORMException {
-		List<Object> params = new ArrayList<>();
-		SQLElement.addValueToSQLObjectList(params, left, right);
-		return new Pair<>("`" + left.getName() + "` " + comp.sql + " ? ", params);
-	}
-
-	/* package */ enum SQLComparator {
-		/** Equivalent to SQL "<code>=</code>" */
-		EQ("="),
-		/** Equivalent to SQL "<code>></code>" */
-		GT(">"),
-		/** Equivalent to SQL "<code>>=</code>" */
-		GEQ(">="),
-		/** Equivalent to SQL "<code>&lt;</code>" */
-		LT("<"),
-		/** Equivalent to SQL "<code>&lt;=</code>" */
-		LEQ("<="),
-		/** Equivalent to SQL "<code>!=</code>" */
-		NEQ("!=");
-
-		/* package */ final String sql;
-
-		private SQLComparator(String s) {
-			sql = s;
-		}
-
-	}
-
-}

Core/src/main/java/fr/pandacube/util/orm/SQLWhereIn.java

@@ -1,38 +0,0 @@
-package fr.pandacube.util.orm;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.List;
-
-import org.javatuples.Pair;
-
-/* package */ class SQLWhereIn<E extends SQLElement<E>> extends SQLWhere<E> {
-
-	private SQLField<E, ?> field;
-	private Collection<?> values;
-
-	/* package */ <T> SQLWhereIn(SQLField<E, T> f, Collection<T> v) {
-		if (f == null || v == null)
-			throw new IllegalArgumentException("All arguments for SQLWhereIn constructor can't be null");
-		field = f;
-		values = v;
-	}
-
-	@Override
-	public Pair<String, List<Object>> toSQL() throws ORMException {
-		List<Object> params = new ArrayList<>();
-		
-		if (values.isEmpty())
-			return new Pair<>(" 1=0 ", params);
-		
-		for (Object v : values)
-			SQLElement.addValueToSQLObjectList(params, field, v);
-		
-		char[] questions = new char[values.size() == 0 ? 0 : (values.size() * 2 - 1)];
-		for (int i = 0; i < questions.length; i++)
-			questions[i] = i % 2 == 0 ? '?' : ',';
-		
-		return new Pair<>("`" + field.getName() + "` IN (" + new String(questions) + ") ", params);
-	}
-
-}

Core/src/main/java/fr/pandacube/util/orm/SQLWhereLike.java

@@ -1,33 +0,0 @@
-package fr.pandacube.util.orm;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.javatuples.Pair;
-
-/* package */ class SQLWhereLike<E extends SQLElement<E>> extends SQLWhere<E> {
-
-	private SQLField<E, ?> field;
-	private String likeExpr;
-
-	/**
-	 * Compare a field with a value
-	 *
-	 * @param f the field at left of the LIKE keyword. Can't be null
-	 * @param like the like expression.
-	 */
-	/* package */ SQLWhereLike(SQLField<E, ?> f, String like) {
-		if (f == null || like == null)
-			throw new IllegalArgumentException("All arguments for SQLWhereLike constructor can't be null");
-		field = f;
-		likeExpr = like;
-	}
-
-	@Override
-	public Pair<String, List<Object>> toSQL() {
-		ArrayList<Object> params = new ArrayList<>();
-		params.add(likeExpr);
-		return new Pair<>("`" + field.getName() + "` LIKE ? ", params);
-	}
-
-}

Core/src/main/java/fr/pandacube/util/orm/SQLWhereNull.java

@@ -1,37 +0,0 @@
-package fr.pandacube.util.orm;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.logging.Level;
-
-import org.javatuples.Pair;
-
-import fr.pandacube.util.Log;
-
-/* package */ class SQLWhereNull<E extends SQLElement<E>> extends SQLWhere<E> {
-
-	private SQLField<E, ?> fild;
-	private boolean nulll;
-
-	/**
-	 * Init a IS NULL / IS NOT NULL expression for a SQL WHERE condition.
-	 *
-	 * @param field the field to check null / not null state
-	 * @param isNull true if we want to ckeck if "IS NULL", or false to check if
-	 *        "IS NOT NULL"
-	 */
-	/* package */ SQLWhereNull(SQLField<E, ?> field, boolean isNull) {
-		if (field == null) throw new IllegalArgumentException("field can't be null");
-		if (!field.canBeNull) Log.getLogger().log(Level.WARNING,
-				"Useless : Trying to check IS [NOT] NULL on the field " + field.getSQLElementType().getName() + "#"
-						+ field.getName() + " which is declared in the ORM as 'can't be null'");
-		fild = field;
-		nulll = isNull;
-	}
-
-	@Override
-	public Pair<String, List<Object>> toSQL() {
-		return new Pair<>("`" + fild.getName() + "` IS " + ((nulll) ? "NULL" : "NOT NULL"), new ArrayList<>());
-	}
-
-}

Core/src/main/java/fr/pandacube/util/orm/SQLWhereOr.java

@@ -1,15 +0,0 @@
-package fr.pandacube.util.orm;
-
-public class SQLWhereOr<E extends SQLElement<E>> extends SQLWhereChain<E> {
-
-	/* package */ SQLWhereOr() {
-		super(SQLBoolOp.OR);
-	}
-	
-	@Override
-	public SQLWhereOr<E> or(SQLWhere<E> other) {
-		add(other);
-		return this;
-	}
-
-}

Paper/.classpath

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src/main/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

Paper/.gitignore

@@ -0,0 +1 @@
+/target/

Paper/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>pandalib-paper</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+	</natures>
+</projectDescription>