/******************************************************************************* | |
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved. | |
* This program and the accompanying materials are made available under the | |
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* Oracle - initial API and implementation from Oracle TopLink | |
******************************************************************************/ | |
package org.eclipse.persistence.internal.queries; | |
import java.util.*; | |
import org.eclipse.persistence.indirection.*; | |
import org.eclipse.persistence.internal.sessions.AbstractSession; | |
/** | |
* PERF: Avoids reflection usage for IndirectList. | |
* | |
* @see ContainerPolicy | |
* @author Big Country | |
* @since TOPLink/Java 2.5 | |
*/ | |
public class IndirectListContainerPolicy extends ListContainerPolicy { | |
/** | |
* INTERNAL: | |
* Construct a new policy. | |
*/ | |
public IndirectListContainerPolicy() { | |
super(); | |
} | |
/** | |
* INTERNAL: | |
* Construct a new policy for the specified class. | |
*/ | |
public IndirectListContainerPolicy(Class containerClass) { | |
super(containerClass); | |
} | |
/** | |
* INTERNAL: | |
* Return a clone of the specified container. | |
*/ | |
public Object cloneFor(Object container) { | |
if (container == null) { | |
return null; | |
} | |
// Use Vector as new objects can have a Vector. | |
try { | |
return ((Vector)container).clone(); | |
} catch (Exception notVector) { | |
// Could potentially be another Collection type as well. | |
return new IndirectList((Collection)container); | |
} | |
} | |
/** | |
* INTERNAL: | |
* Just return the Vector. | |
*/ | |
public Object buildContainerFromVector(Vector vector, AbstractSession session) { | |
return new IndirectList(vector); | |
} | |
/** | |
* INTERNAL: | |
* Return a new Vector. | |
*/ | |
public Object containerInstance() { | |
return new IndirectList(); | |
} | |
/** | |
* INTERNAL: | |
* Return a new Vector. | |
*/ | |
public Object containerInstance(int initialCapacity) { | |
return new IndirectList(initialCapacity); | |
} | |
} |