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.orchestra.conversation.spring;
21
22 import org.apache.myfaces.orchestra.conversation.ConversationBindingEvent;
23 import org.apache.myfaces.orchestra.conversation.ConversationBindingListener;
24
25 /**
26 * A simple class to tidy up persistence contexts.
27 * <p>
28 * An instance of this class can be stored into the attributes of a specific
29 * Conversation object. Because it implements ConversationBindingListener, it
30 * receives a valueUnbound callback when the Conversation is terminated. It
31 * then closes the persistence context object associated with the Conversation.
32 */
33 public class PersistenceContextCloser implements ConversationBindingListener
34 {
35 private final PersistenceContext persistenceContext;
36
37 public PersistenceContextCloser(PersistenceContext persistenceContext)
38 {
39 this.persistenceContext = persistenceContext;
40 }
41
42 public PersistenceContext getPersistenceContext()
43 {
44 return persistenceContext;
45 }
46
47 public void valueBound(ConversationBindingEvent event)
48 {
49 }
50
51 public void valueUnbound(ConversationBindingEvent event)
52 {
53 persistenceContext.close();
54 }
55 }