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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 java.util.ArrayList;
import java.util.List;
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 held by
* EjbRelationshipRole objects (including inherited EjbRelationshipRole
* attributes). That means the returned list of CMPAttributes will be attributes
* that were defined locally and all inherited attributes minus any attributes
* pointed to by EjbRelationshipRoles, thus the attributes will only be
* attributes that were defined by the user.
*/
public class ModelledPersistentAttributeFilter extends
ContainerManagedEntityFilter {
private static ModelledPersistentAttributeFilter singleton;
@Override
protected List filterNotcached(ContainerManagedEntity cmp) {
return getSourceAttributes(cmp);
}
/**
* Return the proper list of attributes from cmpExt. Return all attributes
* minus those added due to Relationship Roles.
*/
protected List getSourceAttributes(ContainerManagedEntity cmp) {
List all, roleAttributes;
all = new ArrayList(cmp.getPersistentAttributes());
roleAttributes = cmp
.getFilteredFeatures(RelationshipRoleAttributeFilter
.singleton());
filterRoleAttributesByName(all, roleAttributes);
return all;
}
/**
* Insert the method's description here. Creation date: (11/28/2000 5:36:00
* PM)
*
* @return com.ibm.ejs.models.base.extensions.ejbext.impl.ModelledPersistentAttributeFilter
*/
public static ModelledPersistentAttributeFilter singleton() {
if (singleton == null)
singleton = new ModelledPersistentAttributeFilter();
return singleton;
}
}
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