/*******************************************************************************
 * Copyright (c) 2001, 2004 IBM Corporation and others.
 * 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:
 * IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jst.j2ee.ejb.internal.impl;

import org.eclipse.jst.j2ee.ejb.ContainerManagedEntity;

/**
 * This filter will return a subset of the persistentAttributes (this includes inherited 
 * attributes) from the ContainerManagedEntityExtension that is passed as an
 * argument to the filter method.
 * It will remove any attribute that is not pointed to by an EjbRelationshipRole.
 * Thus, the returned list will contain attributes (including inherited attributes) that only
 * belong to roles.
 * Creation date: (11/28/2000 6:46:08 PM)
 * @author: Administrator
 */
public class RelationshipRoleAttributeFilter extends AbstractRelationshipRoleAttributeFilter {
	private static RelationshipRoleAttributeFilter singleton;
/**
 * Return the proper list of roles from cmpExt.
 */
protected java.util.List getSourceRoles(ContainerManagedEntity cmp) { 
	   return getRelationshipRoles(cmp); 
}
/**
 * Insert the method's description here.
 * Creation date: (11/28/2000 5:36:00 PM)
 * @return com.ibm.ejs.models.base.extensions.ejbext.impl.RelationshipRoleAttributeFilter
 */
public static RelationshipRoleAttributeFilter singleton() {
	if (singleton == null)
		singleton = new RelationshipRoleAttributeFilter();
	return singleton;
}
}