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/*******************************************************************************
* Copyright (c) 2010, 2011 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.jpa.eclipselink.core.internal.context.java;
import org.eclipse.jpt.common.utility.internal.Tools;
import org.eclipse.jpt.common.utility.internal.iterables.CompositeIterable;
import org.eclipse.jpt.jpa.core.context.java.JavaAttributeMappingDefinition;
import org.eclipse.jpt.jpa.core.context.java.JavaPersistentAttribute;
import org.eclipse.jpt.jpa.core.internal.context.java.JavaAttributeMappingDefinitionWrapper;
import org.eclipse.jpt.jpa.core.internal.jpa2.context.java.JavaIdMappingDefinition2_0;
public class EclipseLinkJavaIdMappingDefinition2_0
extends JavaAttributeMappingDefinitionWrapper
{
private static final JavaAttributeMappingDefinition DELEGATE = JavaIdMappingDefinition2_0.instance();
// singleton
private static final JavaAttributeMappingDefinition INSTANCE = new EclipseLinkJavaIdMappingDefinition2_0();
/**
* Return the singleton.
*/
public static JavaAttributeMappingDefinition instance() {
return INSTANCE;
}
/**
* Enforce singleton usage
*/
private EclipseLinkJavaIdMappingDefinition2_0() {
super();
}
@Override
protected JavaAttributeMappingDefinition getDelegate() {
return DELEGATE;
}
/**
* Check whether the <code>Id</code> mapping is "specified" according to
* the spec then check for EclipseLink default mappings that negate the
* <code>Id</code> mapping.
*/
@Override
public boolean isSpecified(JavaPersistentAttribute persistentAttribute) {
boolean specSpecified = super.isSpecified(persistentAttribute);
return specSpecified && ! this.isDefaultDerivedId(persistentAttribute);
}
/**
* EclipseLink supports default M:1 and 1:1 mappings.
*/
private boolean isDefaultDerivedId(JavaPersistentAttribute persistentAttribute) {
String defaultKey = persistentAttribute.getDefaultMappingKey();
return Tools.valuesAreEqual(defaultKey, this.getManyToOneKey()) ||
Tools.valuesAreEqual(defaultKey, this.getOneToOneKey());
}
private String getManyToOneKey() {
return EclipseLinkJavaOneToOneMappingDefinition2_0.instance().getKey();
}
private String getOneToOneKey() {
return EclipseLinkJavaOneToOneMappingDefinition2_0.instance().getKey();
}
@Override
public Iterable<String> getSupportingAnnotationNames() {
return COMBINED_SUPPORTING_ANNOTATION_NAMES;
}
@SuppressWarnings("unchecked")
private static final Iterable<String> COMBINED_SUPPORTING_ANNOTATION_NAMES = new CompositeIterable<String>(
DELEGATE.getSupportingAnnotationNames(),
EclipseLinkJavaBasicMappingDefinition.ECLIPSE_LINK_SUPPORTING_ANNOTATION_NAMES
);
}
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