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/*******************************************************************************
* 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 org.eclipse.jst.j2ee.ejb.ContainerManagedEntity;
/**
* This filter will return a subset of the keyAttributes (this includes inherited
* key attributes) from the ContainerManagedEntityExtension that is passed as an
* argument to the filter method.
* It will remove any key attribute that is not pointed to by an EjbRelationshipRole.
* Thus, the returned list will contain key attributes (including inherited key attributes) that only
* belong to roles.
* Creation date: (11/28/2000 7:23:22 PM)
* @author: Administrator
*/
public class KeyRelationshipRoleAttributeFilter extends AbstractRelationshipRoleAttributeFilter {
private static KeyRelationshipRoleAttributeFilter singleton;
/**
* Return the proper list of attributes from cmpExt.
*/
@Override
protected java.util.List getSourceRoles(ContainerManagedEntity cmp) {
return cmp.getFilteredFeatures(KeyRelationshipRoleFilter.singleton());
}
/**
* Insert the method's description here.
* Creation date: (11/28/2000 5:36:00 PM)
* @return com.ibm.ejs.models.base.extensions.ejbext.impl.KeyRelationshipRoleAttributeFilter
*/
public static KeyRelationshipRoleAttributeFilter singleton() {
if (singleton == null)
singleton = new KeyRelationshipRoleAttributeFilter();
return singleton;
}
}
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