| /******************************************************************************* |
| * 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 |
| ); |
| } |