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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 }