jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/context/orm/VirtualXmlAssociationOverride.java

/*******************************************************************************
 * Copyright (c)2009 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.core.internal.context.orm;

import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.util.EObjectContainmentEList;
import org.eclipse.jpt.core.context.JoinColumn;
import org.eclipse.jpt.core.context.JoinColumnJoiningStrategy;
import org.eclipse.jpt.core.context.JoiningStrategy;
import org.eclipse.jpt.core.context.orm.OrmTypeMapping;
import org.eclipse.jpt.core.resource.orm.OrmPackage;
import org.eclipse.jpt.core.resource.orm.XmlAssociationOverride;
import org.eclipse.jpt.core.resource.orm.XmlJoinColumn;
import org.eclipse.jpt.utility.internal.CollectionTools;

public class VirtualXmlAssociationOverride extends XmlAssociationOverride
{
	protected OrmTypeMapping ormTypeMapping;
	
	protected final JoiningStrategy joiningStrategy;
	

	public VirtualXmlAssociationOverride(String name, OrmTypeMapping ormTypeMapping, JoiningStrategy joiningStrategy) {
		super();
		this.name = name;
		this.ormTypeMapping = ormTypeMapping;
		this.joiningStrategy = joiningStrategy;
	}
	
	protected boolean isOrmMetadataComplete() {
		return this.ormTypeMapping.isMetadataComplete();
	}

	@Override
	public void setName(String value) {
		throw new UnsupportedOperationException("cannot set values on a virtual mapping"); //$NON-NLS-1$
	}


	@Override
	public EList<XmlJoinColumn> getJoinColumns() {
		EList<XmlJoinColumn> joinColumns = new EObjectContainmentEList<XmlJoinColumn>(XmlJoinColumn.class, this, OrmPackage.XML_ASSOCIATION_OVERRIDE__JOIN_COLUMNS);
		if (this.joiningStrategy instanceof JoinColumnJoiningStrategy) {
			for (JoinColumn joinColumn : 
					CollectionTools.iterable(((JoinColumnJoiningStrategy) this.joiningStrategy).joinColumns())) {
				XmlJoinColumn xmlJoinColumn = new VirtualXmlJoinColumn(joinColumn, this.isOrmMetadataComplete());
				joinColumns.add(xmlJoinColumn);
			}
		}
		return joinColumns;
	}
}