/*******************************************************************************
* 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;
public class RequiredRelationshipRoleFilter extends ContainerManagedEntityFilter {
private static RequiredRelationshipRoleFilter singleton;
@Override
protected List filterNotcached(ContainerManagedEntity cmp) {
List roles = new ArrayList();
Iterator it = getRelationshipRoles(cmp).iterator();
CommonRelationshipRole role;
while (it.hasNext()) {
role = (CommonRelationshipRole) it.next();
if (shouldAddFilteredResult(role)) roles.add(role);
}
return roles;
}
/**
* Return true if the multiplicity for @aRole is required.
*/
protected boolean shouldAddFilteredResult(CommonRelationshipRole aRole) {
return aRole.isRequired();
}
/**
* Insert the method's description here. Creation date: (8/6/2001 11:27:25
* AM)
*
* @return com.ibm.ejs.models.base.extensions.ejbext.impl.RequiredRelationshipRoleFilter
*/
public static RequiredRelationshipRoleFilter singleton() {
if (singleton == null) singleton = new RequiredRelationshipRoleFilter();
return singleton;
}
}