01: /*
02: * Copyright 2002-2006 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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.jpa;
18:
19: import javax.persistence.EntityManager;
20:
21: import org.springframework.transaction.support.ResourceHolderSupport;
22: import org.springframework.util.Assert;
23:
24: /**
25: * Holder wrapping a JPA EntityManager.
26: * JpaTransactionManager binds instances of this class
27: * to the thread, for a given EntityManagerFactory.
28: *
29: * <p>Note: This is an SPI class, not intended to be used by applications.
30: *
31: * @author Juergen Hoeller
32: * @since 2.0
33: * @see JpaTransactionManager
34: * @see EntityManagerFactoryUtils
35: */
36: public class EntityManagerHolder extends ResourceHolderSupport {
37:
38: private final EntityManager entityManager;
39:
40: public EntityManagerHolder(EntityManager entityManager) {
41: Assert.notNull(entityManager,
42: "EntityManager must not be <code>null</code>");
43: this .entityManager = entityManager;
44: }
45:
46: public EntityManager getEntityManager() {
47: return entityManager;
48: }
49:
50: }
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