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DB: custom WHERE expression

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This commit is contained in:
Marc Baloup 2024-03-02 22:14:53 +01:00
parent bdf60785e8
commit 0c074b9354
1 changed files with 53 additions and 1 deletions
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54
pandalib-db/src/main/java/fr/pandacube/lib/db/SQLWhere.java
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@ -64,6 +64,31 @@ public abstract class SQLWhere<E extends SQLElement<E>> {
return new SQLWhereOrBuilder<>();
}
/**
* Create a custom SQL {@code WHERE} expression.
* @param whereExpr the raw SQL {@code WHERE} expression.
* @return a SQL {@code WHERE} expression.
*/
public SQLWhere<E> expression(String whereExpr) {
return expression(whereExpr, List.of());
}
/**
* Create a custom SQL {@code WHERE} expression.
* @param whereExpr the raw SQL {@code WHERE} expression.
* @param params the parameters of the provided expression.
* @return a SQL {@code WHERE} expression.
*/
public SQLWhere<E> expression(String whereExpr, List<Object> params) {
return new SQLWhereCustomExpression<>(whereExpr, params);
}
/**
* A SQL {@code WHERE} expression builder joining multiple expressions with the {@code AND} or {@code OR} operator.
@ -263,7 +288,7 @@ public abstract class SQLWhere<E extends SQLElement<E>> {
for (Object v : values)
SQLElement.addValueToSQLObjectList(params, field, v);
char[] questions = new char[values.size() == 0 ? 0 : (values.size() * 2 - 1)];
char[] questions = new char[values.isEmpty() ? 0 : (values.size() * 2 - 1)];
for (int i = 0; i < questions.length; i++)
questions[i] = i % 2 == 0 ? '?' : ',';
@ -334,6 +359,33 @@ public abstract class SQLWhere<E extends SQLElement<E>> {
/* package */ static class SQLWhereCustomExpression<E extends SQLElement<E>> extends SQLWhere<E> {
private final String sqlExpression;
private final List<Object> parameters;
/* package */ SQLWhereCustomExpression(String sqlExpression, List<Object> parameters) {
if (sqlExpression == null)
throw new IllegalArgumentException("sqlExpression can't be null");
if (parameters == null)
parameters = List.of();
this.sqlExpression = sqlExpression;
this.parameters = parameters;
}
@Override
/* package */ ParameterizedSQLString toSQL() {
return new ParameterizedSQLString(sqlExpression, parameters);
}
}
/**