/** | |
* 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.Provider; | |
import com.google.inject.persist.PersistService; | |
import com.google.inject.persist.Transactional; | |
import com.google.inject.persist.finder.Finder; | |
import java.util.ArrayList; | |
import java.util.Date; | |
import java.util.List; | |
import java.util.UUID; | |
import javax.persistence.EntityManager; | |
import junit.framework.TestCase; | |
/** | |
* A test around providing sessions (starting, closing etc.) | |
* | |
* @author Dhanji R. Prasanna (dhanji@gmail.com) | |
*/ | |
public class DynamicFinderTest extends TestCase { | |
private Injector injector; | |
public void setUp() { | |
injector = Guice.createInjector(new JpaPersistModule("testUnit").addFinder(JpaFinder.class)); | |
//startup persistence | |
injector.getInstance(PersistService.class).start(); | |
} | |
public final void tearDown() { | |
injector.getInstance(PersistService.class).stop(); | |
} | |
public void testDynamicFinderListAll() { | |
//obtain em | |
JpaDao dao = injector.getInstance(JpaDao.class); | |
//obtain same em again (bound to txn) | |
JpaTestEntity te = new JpaTestEntity(); | |
te.setText("HIAjsOKAOSD" + new Date() + UUID.randomUUID().toString()); | |
dao.persist(te); | |
//im not sure this hack works... | |
assertFalse("Duplicate entity managers crossing-scope", | |
dao.lastEm.equals(injector.getInstance(EntityManager.class))); | |
List<JpaTestEntity> list = injector.getInstance(JpaFinder.class).listAll(); | |
assertNotNull(list); | |
assertFalse(list.isEmpty()); | |
assertEquals(1, list.size()); | |
assertEquals(te, list.get(0)); | |
} | |
public static interface JpaFinder { | |
@Finder(query = "from JpaTestEntity", returnAs = ArrayList.class) | |
public List<JpaTestEntity> listAll(); | |
} | |
public static class JpaDao { | |
private final Provider<EntityManager> em; | |
EntityManager lastEm; | |
@Inject | |
public JpaDao(Provider<EntityManager> em) { | |
this.em = em; | |
} | |
@Transactional | |
public <T> void persist(T t) { | |
lastEm = em.get(); | |
assertTrue("em is not open!", lastEm.isOpen()); | |
assertTrue("no active txn!", lastEm.getTransaction().isActive()); | |
lastEm.persist(t); | |
assertTrue("Persisting object failed", lastEm.contains(t)); | |
} | |
@Transactional | |
public <T> boolean contains(T t) { | |
if (null == lastEm) { | |
lastEm = em.get(); | |
} | |
return lastEm.contains(t); | |
} | |
} | |
} |