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Public API for the Apache MyFaces Trinidad project

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.myfaces.trinidad.util;

import java.io.Serializable;

/**
 * Holds an unserializable value in a transient variable so that
 * unserializable Objects can be safely placed in distributed Sessions
 * without blowing up.  Users should expect that getValue() will return
 * null if the class has been serialized/de-serialized
 */ 
public final class TransientHolder implements Serializable 
{ 
  private TransientHolder(T value) 
  { 
    _value = value; 
  } 
    
  public static  TransientHolder newTransientHolder(T held)
  {
    return new TransientHolder(held);
  }
  
  public T getValue() 
  { 
    return _value; 
  } 
 
  private final transient T _value; 
  private static final long serialVersionUID = 1L; 
}