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/*******************************************************************************
* Copyright (c) 2011 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Oracle - initial API and implementation
*
******************************************************************************/
package org.eclipse.jpt.jpa.core.jpql.spi;
import org.eclipse.jdt.core.dom.IMethodBinding;
import org.eclipse.jdt.core.dom.ITypeBinding;
import org.eclipse.persistence.jpa.jpql.spi.IConstructor;
import org.eclipse.persistence.jpa.jpql.spi.IType;
import org.eclipse.persistence.jpa.jpql.spi.ITypeDeclaration;
import org.eclipse.persistence.jpa.jpql.spi.ITypeRepository;
/**
* The concrete implementation of {@link IConstructor} that is wrapping the design-time
* representation of a Java constructor.
*
* Provisional API: This interface is part of an interim API that is still under development and
* expected to change significantly before reaching stability. It is available at this early stage
* to solicit feedback from pioneering adopters on the understanding that any code that uses this
* API will almost certainly be broken (repeatedly) as the API evolves.
*
* @version 3.1
* @since 3.0
* @author Pascal Filion
*/
public class JpaConstructor implements IConstructor {
/**
* The design-time representation of a Java constructor.
*/
private IMethodBinding constructor;
/**
* The cached {@link ITypeDeclaration ITypeDeclarations} representing each of the constructor's
* parameter types.
*/
private ITypeDeclaration[] typeDeclarations;
/**
* The type owning this constructor.
*/
private JpaType type;
/**
* Creates a new <code>JpaConstructor</code>.
*
* @param type The type owning the constructor
* @param constructor The design-time representation of a Java constructor
*/
public JpaConstructor(JpaType type, IMethodBinding constructor) {
super();
this.type = type;
this.constructor = constructor;
}
protected ITypeDeclaration buildTypeDeclaration(ITypeBinding parameterType) {
boolean array = parameterType.isArray();
String typeParameterName;
if (array) {
ITypeBinding componentType = parameterType.getComponentType();
// <T>[] or <? extends <class_name>>[]
if (componentType.isTypeVariable() ||
componentType.isParameterizedType()) {
typeParameterName = componentType.getErasure().getQualifiedName();
}
else {
typeParameterName = componentType.getQualifiedName();
}
// Now for the type arguments, we have to use the component type
parameterType = componentType;
}
// <T> or <? extends <class_name>>
else if (parameterType.isTypeVariable() ||
parameterType.isParameterizedType()) {
typeParameterName = parameterType.getErasure().getQualifiedName();
}
else {
typeParameterName = parameterType.getQualifiedName();
}
// Retrieve the fully qualified name of the type
ITypeRepository typeRepository = type.getTypeRepository();
ITypeBinding[] typeArguments = parameterType.getTypeArguments();
ITypeDeclaration[] genericTypes = new ITypeDeclaration[typeArguments.length];
int index = 0;
for (ITypeBinding typeArgument : typeArguments) {
String genericTypeName = typeArgument.getErasure().getQualifiedName();
IType genericType = typeRepository.getType(genericTypeName);
genericTypes[index++] = genericType.getTypeDeclaration();
}
return new JpaTypeDeclaration(
typeRepository.getType(typeParameterName),
genericTypes,
parameterType.getDimensions()
);
}
protected ITypeDeclaration[] buildTypeDeclarations() {
ITypeBinding[] parameterTypes = constructor.getParameterTypes();
ITypeDeclaration[] declarations = new ITypeDeclaration[parameterTypes.length];
for (int index = declarations.length; --index >= 0; ) {
declarations[index] = buildTypeDeclaration(parameterTypes[index]);
}
return declarations;
}
/**
* {@inheritDoc}
*/
public ITypeDeclaration[] getParameterTypes() {
if (typeDeclarations == null) {
typeDeclarations = buildTypeDeclarations();
}
return typeDeclarations;
}
/**
* {@inheritDoc}
*/
@Override
public String toString() {
return constructor.toString();
}
}
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