/** | |
* Copyright (C) 2010 Google, Inc. | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, | |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
*/ | |
package com.google.inject.persist.jpa; | |
import com.google.inject.Guice; | |
import com.google.inject.Inject; | |
import com.google.inject.Injector; | |
import com.google.inject.persist.PersistService; | |
import com.google.inject.persist.Transactional; | |
import com.google.inject.persist.UnitOfWork; | |
import java.util.Date; | |
import javax.persistence.EntityManager; | |
import javax.persistence.EntityManagerFactory; | |
import junit.framework.TestCase; | |
/** | |
* For instance, a session-per-request strategy will control the opening and closing of the EM at | |
* its own (manual) discretion. As opposed to a transactional unit of work. | |
* | |
* @author Dhanji R. Prasanna (dhanji@gmail.com) | |
*/ | |
public class ManualLocalTransactionsTest extends TestCase { | |
private Injector injector; | |
private static final String UNIQUE_TEXT = "some unique text" + new Date(); | |
private static final String UNIQUE_TEXT_2 = "some other unique text" + new Date(); | |
public void setUp() { | |
injector = Guice.createInjector(new JpaPersistModule("testUnit")); | |
//startup persistence | |
injector.getInstance(PersistService.class).start(); | |
} | |
public void tearDown() { | |
injector.getInstance(EntityManagerFactory.class).close(); | |
} | |
public void testSimpleCrossTxnWork() { | |
injector.getInstance(UnitOfWork.class).begin(); | |
//pretend that the request was started here | |
EntityManager em = injector.getInstance(EntityManager.class); | |
JpaTestEntity entity = injector.getInstance(TransactionalObject.class).runOperationInTxn(); | |
injector.getInstance(TransactionalObject.class).runOperationInTxn2(); | |
//persisted entity should remain in the same em (which should still be open) | |
assertTrue("EntityManager appears to have been closed across txns!", | |
injector.getInstance(EntityManager.class).contains(entity)); | |
assertTrue("EntityManager appears to have been closed across txns!", em.contains(entity)); | |
assertTrue("EntityManager appears to have been closed across txns!", em.isOpen()); | |
injector.getInstance(UnitOfWork.class).end(); | |
injector.getInstance(UnitOfWork.class).begin(); | |
//try to query them back out | |
em = injector.getInstance(EntityManager.class); | |
assertNotNull(em.createQuery("from JpaTestEntity where text = :text") | |
.setParameter("text", UNIQUE_TEXT).getSingleResult()); | |
assertNotNull(em.createQuery("from JpaTestEntity where text = :text") | |
.setParameter("text", UNIQUE_TEXT_2).getSingleResult()); | |
em.close(); | |
assertFalse(em.isOpen()); | |
} | |
public static class TransactionalObject { | |
@Inject EntityManager em; | |
@Transactional | |
public JpaTestEntity runOperationInTxn() { | |
JpaTestEntity entity = new JpaTestEntity(); | |
entity.setText(UNIQUE_TEXT); | |
em.persist(entity); | |
return entity; | |
} | |
@Transactional | |
public void runOperationInTxn2() { | |
JpaTestEntity entity = new JpaTestEntity(); | |
entity.setText(UNIQUE_TEXT_2); | |
em.persist(entity); | |
} | |
} | |
} |