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Java > Open Source Codes > org > apache > geronimo > persistence > EntityManagerExtendedRegistry


1 /**
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18 package org.apache.geronimo.persistence;
19
20 import java.util.Map JavaDoc;
21 import java.util.HashMap JavaDoc;
22 import java.util.Iterator JavaDoc;
23
24 import javax.transaction.Transaction JavaDoc;
25
26 /**
27  * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
28  */
29 public class EntityManagerExtendedRegistry {
30
31     private static final ThreadLocal JavaDoc<Map JavaDoc<String JavaDoc, InternalCMPEntityManagerExtended>> entityManagerMaps = new ThreadLocal JavaDoc<Map JavaDoc<String JavaDoc, InternalCMPEntityManagerExtended>>() {
32         protected Map JavaDoc<String JavaDoc, InternalCMPEntityManagerExtended> initialValue() {
33             return new HashMap JavaDoc<String JavaDoc, InternalCMPEntityManagerExtended>();
34         }
35     };
36
37     public static InternalCMPEntityManagerExtended getEntityManager(String JavaDoc persistenceUnit) {
38         Map JavaDoc<String JavaDoc, InternalCMPEntityManagerExtended> entityManagerMap = entityManagerMaps.get();
39         return entityManagerMap.get(persistenceUnit);
40     }
41
42     public static void putEntityManager(String JavaDoc persistenceUnit, InternalCMPEntityManagerExtended entityManager) {
43         Map JavaDoc<String JavaDoc, InternalCMPEntityManagerExtended> entityManagerMap = entityManagerMaps.get();
44         InternalCMPEntityManagerExtended oldEntityManager = entityManagerMap.put(persistenceUnit, entityManager);
45         if (oldEntityManager != null) {
46             throw new IllegalStateException JavaDoc("There was already an EntityManager registered for persistenceUnit " + persistenceUnit);
47         }
48     }
49
50     public static void clearEntityManager(String JavaDoc persistenceUnit) {
51         Map JavaDoc<String JavaDoc, InternalCMPEntityManagerExtended> entityManagerMap = entityManagerMaps.get();
52         entityManagerMap.remove(persistenceUnit);
53     }
54
55     public static void threadAssociated(Transaction JavaDoc transaction) {
56         Map JavaDoc<String JavaDoc, InternalCMPEntityManagerExtended> entityManagerMap = entityManagerMaps.get();
57         for (Iterator JavaDoc i = entityManagerMap.values().iterator(); i.hasNext(); ) {
58             InternalCMPEntityManagerExtended entityManager = (InternalCMPEntityManagerExtended) i.next();
59             entityManager.joinTransaction();
60         }
61     }
62
63     public static void threadUnassociated(Transaction JavaDoc transaction) {
64         //Any way to unassociate?
65 }
66 }
67
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