69 lines
2.7 KiB
Java
69 lines
2.7 KiB
Java
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package fr.pandacube.lib.reflect;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.InvocationTargetException;
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import java.util.Arrays;
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/**
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* Wrapper for a class {@link Constructor}.
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* @param <T> the type of the class declaring the wrapped constructor.
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*/
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public final class ReflectConstructor<T> extends ReflectMember<T, ConstructorIdentifier, Constructor<T>, NoSuchMethodException> {
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/* package */ ReflectConstructor(ReflectClass<T> c, ConstructorIdentifier constructorId, boolean bypassFilter) throws NoSuchMethodException {
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super(c, constructorId, bypassFilter);
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}
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// Override since we don't want to recursively search for a constructor
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@Override
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protected Constructor<T> fetch() throws NoSuchMethodException {
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Constructor<T> el = fetchFromClass(reflectClass.get());
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setAccessible(el);
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return el;
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}
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@Override
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protected Constructor<T> fetchFromClass(Class<T> clazz) throws NoSuchMethodException {
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return clazz.getDeclaredConstructor(identifier.parameters());
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}
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@Override
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protected Constructor<T> fetchFromReflectClass(ReflectClass<?> rc) {
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throw new UnsupportedOperationException();
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}
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@Override
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protected boolean isEqualOurElement(Constructor<T> el) {
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return Arrays.equals(identifier.parameters(), el.getParameterTypes());
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}
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@Override
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protected String internalMethodNameElementArray() {
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return "getDeclaredConstructors0";
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}
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@Override
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protected String internalMethodNameCopyElement() {
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return "copyConstructor";
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}
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/**
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* Invoke this constructor to create a new instance of the declaring class of this constructor.
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* @param values the parameters used for the constructor call.
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* @return the newly created instance.
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* @throws IllegalAccessException if the wrapped Constructor object is enforcing Java language access control and
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* the underlying constructor is inaccessible. Note that this
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* {@link ReflectConstructor} automatically sets the {@link Constructor}’s accessible
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* flag to true.
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* @throws IllegalArgumentException if there is any problem with the constructor parameters (wrong number, wrong
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* type, ...).
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* @throws InstantiationException if the declaring class of this constructor is an abstract class.
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* @throws InvocationTargetException if the called constructor throws an exception.
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* @see Constructor#newInstance(Object...)
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*/
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public T instanciate(Object... values) throws InvocationTargetException, InstantiationException, IllegalAccessException {
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return get().newInstance(values);
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}
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}
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