/*******************************************************************************
* Copyright (c) 2001, 2005 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;
/**
* This filter will return a subset of the relationshipRoles (this includes
* inherited EjbRelationshipRoles) from the ContainerManagedEntityExtension
* that is passed as an argument to the filter method. It will remove any
* EjbRelationshipRole that is inherited and it will return the opposite role.
* Creation date: (11/28/2000 7:14:57 PM) @author: Administrator
*/
public class LocalOppositeRelationshipRoleFilter extends ContainerManagedEntityFilter {
private static LocalOppositeRelationshipRoleFilter singleton;
/**
* Return a List with the opposite roles for the local relationship roles.
*/
@Override
protected List filterNotcached(ContainerManagedEntity cmp) {
List oppositeRoles = new ArrayList();
Iterator it = getLocalRelationshipRoles(cmp).iterator();
CommonRelationshipRole role, opposite;
while (it != null && it.hasNext()) {
role = (CommonRelationshipRole) it.next();
opposite = role.getOppositeAsCommonRole();
if (opposite != null) oppositeRoles.add(opposite);
}
return oppositeRoles;
}
/**
* Insert the method's description here. Creation date: (11/28/2000 7:15:37
* PM)
*
* @return com.ibm.ejs.models.base.extensions.ejbext.impl.LocalOppositeRelationshipRoleFilter
*/
public static LocalOppositeRelationshipRoleFilter singleton() {
if (singleton == null) singleton = new LocalOppositeRelationshipRoleFilter();
return singleton;
}
}