/*******************************************************************************
 * 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 java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

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


/**
 * Insert the type's description here.
 * Creation date: (11/28/2000 7:06:49 PM)
 * @author: Administrator
 */
public abstract class AbstractRelationshipRoleAttributeFilter extends ContainerManagedEntityFilter {
/**
 * AbstractRelationshipRoleAttributeFilter constructor comment.
 */
public AbstractRelationshipRoleAttributeFilter() {
	super();
}
/**
 * filter method comment.
 */
public List filter(ContainerManagedEntity cmp) {
	List attributes = new ArrayList();
	Iterator it = getSourceRoles(cmp).iterator();
	CommonRelationshipRole role;
	while (it.hasNext()) {
		role = (CommonRelationshipRole) it.next();
		attributes.addAll(role.getAttributes());
	}
	return attributes;
}
/**
 * Return the proper list of roles from cmpExt.
 */
protected abstract java.util.List getSourceRoles(ContainerManagedEntity cmpExt) ;
}