/**********************************************************************
Copyright (c) 2012 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.appengine.datanucleus.jpa;
import java.util.List;
import java.util.Set;
import javax.persistence.EntityManager;
import javax.persistence.Query;
import org.datanucleus.util.NucleusLogger;
import com.google.appengine.datanucleus.test.jpa.UnownedJPAManyToManySideA;
import com.google.appengine.datanucleus.test.jpa.UnownedJPAManyToManySideB;
/**
* Tests for unowned M-N relations
*/
public class JPAUnownedManyToManyTest extends JPATestCase {
public void testPersistBThenRelation() throws Exception {
EntityManager em = emf.createEntityManager();
try {
// Persist Side B
UnownedJPAManyToManySideB b = new UnownedJPAManyToManySideB();
em.persist(b);
// Create and persist Side A with another Side B, plus the existing Side B
UnownedJPAManyToManySideA a = new UnownedJPAManyToManySideA();
UnownedJPAManyToManySideB b2 = new UnownedJPAManyToManySideB();
b2.getAs().add(a);
a.getBs().add(b2);
a.getBs().add(b);
b.getAs().add(a);
em.persist(b2);
em.persist(a);
} catch (Exception e) {
NucleusLogger.GENERAL.error("Exception in persist", e);
fail("Exception in test : " + e.getMessage());
return;
} finally {
if (em.getTransaction().isActive()) {
em.getTransaction().rollback();
}
em.close();
}
if (emf.getCache() != null) {
emf.getCache().evictAll();
}
em = emf.createEntityManager();
try {
Query qa = em.createQuery("SELECT a FROM UnownedJPAManyToManySideA a");
List<UnownedJPAManyToManySideA> results1 = qa.getResultList();
assertNotNull(results1);
assertEquals("Incorrect number of side A", 1, results1.size());
UnownedJPAManyToManySideA a = results1.iterator().next();
Set<UnownedJPAManyToManySideB> bs = a.getBs();
assertNotNull(bs);
assertEquals("Incorrect number of side B for A", 2, bs.size());
Query qb = em.createQuery("SELECT b FROM UnownedJPAManyToManySideB b");
List<UnownedJPAManyToManySideB> results2 = qb.getResultList();
assertNotNull(results2);
assertEquals("Incorrect number of side B", 2, results2.size());
} catch (Exception e) {
NucleusLogger.GENERAL.error("Exception in retrieval/checking", e);
fail("Exception in test : " + e.getMessage());
return;
} finally {
if (em.getTransaction().isActive()) {
em.getTransaction().rollback();
}
em.close();
}
}
public void testPersistAThenRelation() throws Exception {
EntityManager em = emf.createEntityManager();
try {
// Persist Side A
UnownedJPAManyToManySideA a = new UnownedJPAManyToManySideA();
em.persist(a);
// Create and persist Side B with Side A, plus another Side B
UnownedJPAManyToManySideB b = new UnownedJPAManyToManySideB();
b.getAs().add(a);
a.getBs().add(b);
em.persist(b);
UnownedJPAManyToManySideB b2 = new UnownedJPAManyToManySideB();
b2.getAs().add(a);
a.getBs().add(b2);
em.persist(b2);
} catch (Exception e) {
NucleusLogger.GENERAL.error("Exception in persist", e);
fail("Exception in test : " + e.getMessage());
return;
} finally {
if (em.getTransaction().isActive()) {
em.getTransaction().rollback();
}
em.close();
}
if (emf.getCache() != null) {
emf.getCache().evictAll();
}
em = emf.createEntityManager();
try {
Query qa = em.createQuery("SELECT a FROM UnownedJPAManyToManySideA a");
List<UnownedJPAManyToManySideA> results1 = qa.getResultList();
assertNotNull(results1);
assertEquals("Incorrect number of side A", 1, results1.size());
UnownedJPAManyToManySideA a = results1.iterator().next();
Set<UnownedJPAManyToManySideB> bs = a.getBs();
assertNotNull(bs);
assertEquals("Incorrect number of side B for A", 2, bs.size());
Query qb = em.createQuery("SELECT b FROM UnownedJPAManyToManySideB b");
List<UnownedJPAManyToManySideB> results2 = qb.getResultList();
assertNotNull(results2);
assertEquals("Incorrect number of side B", 2, results2.size());
} catch (Exception e) {
NucleusLogger.GENERAL.error("Exception in retrieval/checking", e);
fail("Exception in test : " + e.getMessage());
return;
} finally {
if (em.getTransaction().isActive()) {
em.getTransaction().rollback();
}
em.close();
}
}
public void testPersistInOneStep() throws Exception {
EntityManager em = emf.createEntityManager();
try {
// Persist Side A
UnownedJPAManyToManySideB b = new UnownedJPAManyToManySideB();
UnownedJPAManyToManySideA a = new UnownedJPAManyToManySideA();
UnownedJPAManyToManySideB b2 = new UnownedJPAManyToManySideB();
b2.getAs().add(a);
a.getBs().add(b2);
a.getBs().add(b);
b.getAs().add(a);
em.persist(a);
em.persist(a);
} catch (Exception e) {
NucleusLogger.GENERAL.error("Exception in persist", e);
fail("Exception in test : " + e.getMessage());
return;
} finally {
if (em.getTransaction().isActive()) {
em.getTransaction().rollback();
}
em.close();
}
if (emf.getCache() != null) {
emf.getCache().evictAll();
}
em = emf.createEntityManager();
try {
Query qa = em.createQuery("SELECT a FROM UnownedJPAManyToManySideA a");
List<UnownedJPAManyToManySideA> results1 = qa.getResultList();
assertNotNull(results1);
assertEquals("Incorrect number of side A", 1, results1.size());
UnownedJPAManyToManySideA a = results1.iterator().next();
Set<UnownedJPAManyToManySideB> bs = a.getBs();
assertNotNull(bs);
assertEquals("Incorrect number of side B for A", 2, bs.size());
Query qb = em.createQuery("SELECT b FROM UnownedJPAManyToManySideB b");
List<UnownedJPAManyToManySideB> results2 = qb.getResultList();
assertNotNull(results2);
assertEquals("Incorrect number of side B", 2, results2.size());
} catch (Exception e) {
NucleusLogger.GENERAL.error("Exception in retrieval/checking", e);
fail("Exception in test : " + e.getMessage());
return;
} finally {
if (em.getTransaction().isActive()) {
em.getTransaction().rollback();
}
em.close();
}
}
}