jpa/plugins/org.eclipse.jpt.jpa.eclipselink.core/src/org/eclipse/jpt/jpa/eclipselink/core/internal/context/java/EclipseLinkJavaBasicMappingDefinition.java

/*******************************************************************************
 * 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.iterables.ArrayIterable;
import org.eclipse.jpt.common.utility.internal.iterables.CompositeIterable;
import org.eclipse.jpt.jpa.core.context.java.DefaultJavaAttributeMappingDefinition;
import org.eclipse.jpt.jpa.core.internal.context.java.DefaultJavaAttributeMappingDefinitionWrapper;
import org.eclipse.jpt.jpa.core.internal.context.java.JavaBasicMappingDefinition;
import org.eclipse.jpt.jpa.eclipselink.core.resource.java.EclipseLinkConvertAnnotation;
import org.eclipse.jpt.jpa.eclipselink.core.resource.java.EclipseLinkMutableAnnotation;

public class EclipseLinkJavaBasicMappingDefinition
	extends DefaultJavaAttributeMappingDefinitionWrapper
{
	private static final DefaultJavaAttributeMappingDefinition DELEGATE = JavaBasicMappingDefinition.instance();

	// singleton
	private static final DefaultJavaAttributeMappingDefinition INSTANCE = new EclipseLinkJavaBasicMappingDefinition();

	/**
	 * Return the singleton.
	 */
	public static DefaultJavaAttributeMappingDefinition instance() {
		return INSTANCE;
	}


	/**
	 * Enforce singleton usage
	 */
	private EclipseLinkJavaBasicMappingDefinition() {
		super();
	}

	@Override
	protected DefaultJavaAttributeMappingDefinition getDelegate() {
		return DELEGATE;
	}

	@Override
	public Iterable<String> getSupportingAnnotationNames() {
		return COMBINED_SUPPORTING_ANNOTATION_NAMES;
	}

	private static final String[] ECLIPSE_LINK_SUPPORTING_ANNOTATION_NAMES_ARRAY = new String[] {
		EclipseLinkMutableAnnotation.ANNOTATION_NAME,
		EclipseLinkConvertAnnotation.ANNOTATION_NAME,
	};
	// 'public' because the EclipseLink Id and Version mappings also support these annotations
	public static final Iterable<String> ECLIPSE_LINK_SUPPORTING_ANNOTATION_NAMES = new ArrayIterable<String>(ECLIPSE_LINK_SUPPORTING_ANNOTATION_NAMES_ARRAY);

	@SuppressWarnings("unchecked")
	private static final Iterable<String> COMBINED_SUPPORTING_ANNOTATION_NAMES = new CompositeIterable<String>(
		DELEGATE.getSupportingAnnotationNames(),
		ECLIPSE_LINK_SUPPORTING_ANNOTATION_NAMES
	);
}