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 package org.apache.myfaces.shared.el;
20
21 import javax.faces.component.StateHolder;
22 import javax.faces.context.FacesContext;
23 import javax.faces.el.EvaluationException;
24 import javax.faces.el.MethodBinding;
25 import javax.faces.el.MethodNotFoundException;
26
27 /**
28 * Convenient method binding that does nothing other than returning a fixed outcome String when invoked.
29 *
30 * @author Manfred Geiler
31 */
32 public class SimpleActionMethodBinding
33 extends MethodBinding
34 implements StateHolder
35 {
36 private String _outcome;
37
38 public SimpleActionMethodBinding(String outcome)
39 {
40 _outcome = outcome;
41 }
42
43 public Object invoke(FacesContext facescontext, Object aobj[]) throws EvaluationException, MethodNotFoundException
44 {
45 return _outcome;
46 }
47
48 public Class getType(FacesContext facescontext) throws MethodNotFoundException
49 {
50 return String.class;
51 }
52
53
54 //~ StateHolder support ----------------------------------------------------------------------------
55
56 private boolean _transient = false;
57
58 /**
59 * Empty constructor, so that new instances can be created when restoring state.
60 */
61 public SimpleActionMethodBinding()
62 {
63 _outcome = null;
64 }
65
66 public Object saveState(FacesContext facescontext)
67 {
68 return _outcome;
69 }
70
71 public void restoreState(FacesContext facescontext, Object obj)
72 {
73 _outcome = (String)obj;
74 }
75
76 public boolean isTransient()
77 {
78 return _transient;
79 }
80
81 public void setTransient(boolean flag)
82 {
83 _transient = flag;
84 }
85
86 public String toString()
87 {
88 return _outcome;
89 }
90 }