/*
* Copyright 2002-2006 the original author or authors.
*
* 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 org.springframework.orm.jpa;
import java.util.List;
import java.lang.reflect.Proxy;
import javax.persistence.EntityManager;
import javax.persistence.Query;
import javax.persistence.TransactionRequiredException;
import org.springframework.aop.support.AopUtils;
import org.springframework.orm.jpa.domain.Person;
import org.springframework.orm.jpa.AbstractEntityManagerFactoryIntegrationTests;
import org.springframework.test.annotation.NotTransactional;
import org.springframework.transaction.annotation.Transactional;
/**
* An application-managed entity manager can join an existing transaction,
* but such joining must be made programmatically, not transactionally.
*
* @author Rod Johnson
* @since 2.0
*/
public class ApplicationManagedEntityManagerIntegrationTests extends AbstractEntityManagerFactoryIntegrationTests {
@NotTransactional
public void testEntityManagerIsProxy() {
assertTrue("EntityManagerFactory is proxied", Proxy.isProxyClass(entityManagerFactory.getClass()));
}
@Transactional(readOnly=true)
public void testEntityManagerProxyIsProxy() {
EntityManager em = entityManagerFactory.createEntityManager();
assertTrue(Proxy.isProxyClass(em.getClass()));
Query q = em.createQuery("select p from Person as p");
List<Person> people = q.getResultList();
assertTrue("Should be open to start with", em.isOpen());
em.close();
assertFalse("Close should work on application managed EM", em.isOpen());
}
public void testEntityManagerProxyAcceptsProgrammaticTxJoining() {
EntityManager em = entityManagerFactory.createEntityManager();
em.joinTransaction();
}
public void testInstantiateAndSave() {
EntityManager em = entityManagerFactory.createEntityManager();
em.joinTransaction();
doInstantiateAndSave(em);
}
public void testCannotFlushWithoutGettingTransaction() {
EntityManager em = entityManagerFactory.createEntityManager();
try {
doInstantiateAndSave(em);
fail("Should have thrown TransactionRequiredException");
}
catch (TransactionRequiredException ex) {
// expected
}
// TODO following lines are a workaround for Hibernate bug
// If Hibernate throws an exception due to flush(),
// it actually HAS flushed, meaning that the database
// was updated outside the transaction
deleteAllPeopleUsingEntityManager(sharedEntityManager);
setComplete();
}
public void doInstantiateAndSave(EntityManager em) {
testStateClean();
Person p = new Person();
p.setFirstName("Tony");
p.setLastName("Blair");
em.persist(p);
em.flush();
assertEquals("1 row must have been inserted",
1, countRowsInTable("person"));
}
public void testStateClean() {
assertEquals("Should be no people from previous transactions",
0, countRowsInTable("person"));
}
public void testReuseInNewTransaction() {
EntityManager em = entityManagerFactory.createEntityManager();
em.joinTransaction();
doInstantiateAndSave(em);
endTransaction();
assertFalse(em.getTransaction().isActive());
startNewTransaction();
// Call any method: should cause automatic tx invocation
assertFalse(em.contains(new Person()));
assertFalse(em.getTransaction().isActive());
em.joinTransaction();
assertTrue(em.getTransaction().isActive());
doInstantiateAndSave(em);
setComplete();
endTransaction(); // Should rollback
assertEquals("Tx must have committed back",
1, countRowsInTable("person"));
// Now clean up the database
startNewTransaction();
em.joinTransaction();
deleteAllPeopleUsingEntityManager(em);
assertEquals("People have been killed",
0, countRowsInTable("person"));
setComplete();
}
public static void deleteAllPeopleUsingEntityManager(EntityManager em) {
em.createQuery("delete from Person p").executeUpdate();
}
public void testRollbackOccurs() {
EntityManager em = entityManagerFactory.createEntityManager();
em.joinTransaction();
doInstantiateAndSave(em);
endTransaction(); // Should rollback
assertEquals("Tx must have been rolled back",
0, countRowsInTable("person"));
}
public void testCommitOccurs() {
EntityManager em = entityManagerFactory.createEntityManager();
em.joinTransaction();
doInstantiateAndSave(em);
setComplete();
endTransaction(); // Should rollback
assertEquals("Tx must have committed back",
1, countRowsInTable("person"));
// Now clean up the database
deleteFromTables(new String[] { "person" });
}
}