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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  
20  package org.apache.myfaces.tobago.context;
21  
22  
23  import javax.faces.component.StateHolder;
24  import javax.faces.context.FacesContext;
25  import java.io.Serializable;
26  
27  public class TransientStateHolder implements StateHolder, Serializable {
28  
29    private static final long serialVersionUID = -5260593843885016768L;
30  
31    private transient Object object;
32  
33    public TransientStateHolder() {
34    }
35  
36    public TransientStateHolder(final Object object) {
37      this.object = object;
38    }
39  
40    @Override
41    public Object saveState(final FacesContext context) {
42      // do nothing
43      return null;
44    }
45  
46    public void put(final Object object) {
47      this.object = object;
48    }
49  
50    public boolean isEmpty() {
51      return object == null;
52    }
53  
54    public Object get() {
55      return object;
56    }
57  
58    @Override
59    public void restoreState(final FacesContext context, final Object state) {
60      // do nothing
61    }
62  
63    @Override
64    public boolean isTransient() {
65      return true;
66    }
67  
68    @Override
69    public void setTransient(final boolean newTransientValue) {
70      // do nothing
71    }
72  
73  }