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.custom.conversation;
20
21 import javax.faces.context.FacesContext;
22 import javax.faces.el.EvaluationException;
23 import javax.faces.el.VariableResolver;
24
25 public class ConversationVariableResolver extends VariableResolver
26 {
27 private final VariableResolver original;
28
29 public ConversationVariableResolver(VariableResolver original)
30 {
31 this.original = original;
32 }
33
34 public Object resolveVariable(FacesContext context, String name) throws EvaluationException
35 {
36 ConversationManager conversationManager = ConversationManager.getInstance(context);
37 if (conversationManager.hasConversationContext())
38 {
39 Object bean = conversationManager.getConversationContext().findBean(name);
40 if (bean != null)
41 {
42 return bean;
43 }
44 }
45
46 return original.resolveVariable(context, name);
47 }
48
49 }