001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *   http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    
020    package org.apache.myfaces.tobago.context;
021    
022    
023    import javax.faces.component.StateHolder;
024    import javax.faces.context.FacesContext;
025    import java.io.Serializable;
026    
027    /*
028     * Date: May 3, 2007
029     * Time: 5:44:04 PM
030     */
031    public class TransientStateHolder implements StateHolder, Serializable {
032    
033      private static final long serialVersionUID = -5260593843885016768L;
034    
035      private transient Object object;
036    
037      public TransientStateHolder() {
038      }
039    
040      public TransientStateHolder(Object object) {
041        this.object = object;
042      }
043    
044      public Object saveState(FacesContext context) {
045        // do nothing
046        return null;
047      }
048    
049      public void put(Object object) {
050        this.object = object;
051      }
052    
053      public boolean isEmpty() {
054        return object == null;
055      }
056    
057      public Object get() {
058        return object;
059      }
060    
061      public void restoreState(FacesContext context, Object state) {
062        // do nothing
063      }
064    
065      public boolean isTransient() {
066        return true;
067      }
068    
069      public void setTransient(boolean newTransientValue) {
070        // do nothing
071      }
072    
073    }