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/*******************************************************************************
* 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.internal.ejb.impl;
import java.util.ArrayList;
import org.eclipse.jst.j2ee.ejb.CMPAttribute;
import org.eclipse.jst.j2ee.ejb.ContainerManagedEntity;
/**
* This filter will return a subset of the persistentAttributes from the
* ContainerManagedEntityExtension that is passed as an argument to the filter method.
* It will remove any persistentAttributes that are inherited by any supertypes.
* That means the returned list of CMPAttributes will be attributes that were defined locally
* for the ContainerManagedEntity held by the ContainerManagedEntityExtension plus attributes
* that were added from EjbRelationshipRoles that are held by the ContainerManagedEntityExtension.
* Creation date: (11/28/2000 5:35:03 PM)
* @author: Administrator
*/
public class LocalPersistentAttributeFilter extends SupertypeCMPAttributeFilter {
private static LocalPersistentAttributeFilter singleton;
/**
* Return the proper list of attributes from cmpExt.
*/
protected java.util.List getSourceAttributes(ContainerManagedEntity cmp) {
return new ArrayList(cmp.getPersistentAttributes());
}
/**
* Return a boolean indicating whether anAttribute also exists in the superEntity.
* For this filter, only the name has to be the same.
*/
protected boolean isSupertypeAttribute(ContainerManagedEntity superEntity, CMPAttribute anAttribute) {
CMPAttribute found = superEntity.getPersistentAttribute(anAttribute.getName());
return found != null;
}
/**
* Insert the method's description here.
* Creation date: (11/28/2000 5:36:00 PM)
* @return com.ibm.ejs.models.base.extensions.ejbext.impl.LocalPersistentAttributeFilter
*/
public static LocalPersistentAttributeFilter singleton() {
if (singleton == null)
singleton = new LocalPersistentAttributeFilter();
return singleton;
}
}
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