/*******************************************************************************
* 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 not part of the key. Creation date: (11/28/2000
* 7:14:57 PM) @author: Administrator
*/
public class KeyRelationshipRoleFilter extends ContainerManagedEntityFilter {
private static KeyRelationshipRoleFilter singleton;
@Override
protected List filterNotcached(ContainerManagedEntity cmp) {
List keyRoles = new ArrayList();
Iterator it = getRelationshipRoles(cmp).iterator();
CommonRelationshipRole role;
while (it.hasNext()) {
role = (CommonRelationshipRole) it.next();
if (role.isKey()) keyRoles.add(role);
}
return keyRoles;
}
/**
* Insert the method's description here. Creation date: (11/28/2000 7:15:37
* PM)
*
* @return com.ibm.ejs.models.base.extensions.ejbext.impl.KeyRelationshipRoleFilter
*/
public static KeyRelationshipRoleFilter singleton() {
if (singleton == null) singleton = new KeyRelationshipRoleFilter();
return singleton;
}
}