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Java > Open Source Codes > org > springframework > orm > jdo > PersistenceManagerHolder


1 /*
2  * Copyright 2002-2005 the original author or authors.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package org.springframework.orm.jdo;
18
19 import javax.jdo.PersistenceManager;
20
21 import org.springframework.transaction.support.ResourceHolderSupport;
22 import org.springframework.util.Assert;
23
24 /**
25  * Holder wrapping a JDO PersistenceManager.
26  * JdoTransactionManager binds instances of this class
27  * to the thread, for a given PersistenceManagerFactory.
28  *
29  * <p>Note: This is an SPI class, not intended to be used by applications.
30  *
31  * @author Juergen Hoeller
32  * @since 03.06.2003
33  * @see JdoTransactionManager
34  * @see PersistenceManagerFactoryUtils
35  */
36 public class PersistenceManagerHolder extends ResourceHolderSupport {
37
38     private final PersistenceManager persistenceManager;
39
40
41     /**
42      * Create a new PersistenceManagerHolder for the given JDO PersistenceManager.
43      * @param persistenceManager the JDO PersistenceManager
44      */
45     public PersistenceManagerHolder(PersistenceManager persistenceManager) {
46         Assert.notNull(persistenceManager, "PersistenceManager must not be null");
47         this.persistenceManager = persistenceManager;
48     }
49
50     /**
51      * Return this holder's JDO PersistenceManager.
52      */
53     public PersistenceManager getPersistenceManager() {
54         return persistenceManager;
55     }
56
57 }
58
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