| /** |
| * 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 junit.framework.TestCase; |
| |
| import java.util.ArrayList; |
| import java.util.Date; |
| import java.util.List; |
| import java.util.UUID; |
| |
| import javax.persistence.EntityManager; |
| |
| /** |
| * 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); |
| } |
| } |
| } |