| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.openjpa.persistence.relations; |
| |
| import java.util.List; |
| |
| import javax.persistence.EntityManager; |
| |
| import org.apache.openjpa.jdbc.conf.JDBCConfiguration; |
| import org.apache.openjpa.persistence.OpenJPAEntityManager; |
| import org.apache.openjpa.persistence.test.SingleEMFTestCase; |
| |
| import junit.textui.TestRunner; |
| |
| /** |
| * Tests a cascading one-many backed by a foreign key. |
| * |
| * @author Abe White |
| */ |
| public class TestCascadingOneManyWithForeignKey |
| extends SingleEMFTestCase { |
| |
| @Override |
| public void setUp() { |
| setUp(CascadingOneManyParent.class, CascadingOneManyChild.class); |
| } |
| |
| public void testPersist() { |
| CascadingOneManyParent parent = new CascadingOneManyParent(); |
| parent.setName("parent"); |
| for (int i = 0; i < 2; i++) { |
| CascadingOneManyChild child = new CascadingOneManyChild(); |
| child.setName("child" + i); |
| parent.addChild(child); |
| } |
| |
| EntityManager em = emf.createEntityManager(); |
| em.getTransaction().begin(); |
| em.persist(parent); |
| em.getTransaction().commit(); |
| long id = parent.getId(); |
| assertEquals(2, parent.getChildren().size()); |
| assertEquals("child0", parent.getChildren().get(0).getName()); |
| assertEquals("child1", parent.getChildren().get(1).getName()); |
| em.close(); |
| |
| em = emf.createEntityManager(); |
| parent = em.find(CascadingOneManyParent.class, id); |
| assertNotNull(parent); |
| assertEquals("parent", parent.getName()); |
| assertEquals(2, parent.getChildren().size()); |
| assertEquals("child0", parent.getChildren().get(0).getName()); |
| assertEquals("child1", parent.getChildren().get(1).getName()); |
| em.close(); |
| } |
| |
| public void testDelete() { |
| CascadingOneManyParent parent = new CascadingOneManyParent(); |
| parent.setName("parent"); |
| for (int i = 0; i < 2; i++) { |
| CascadingOneManyChild child = new CascadingOneManyChild(); |
| child.setName("child" + i); |
| parent.addChild(child); |
| } |
| |
| EntityManager em = emf.createEntityManager(); |
| em.getTransaction().begin(); |
| em.persist(parent); |
| em.getTransaction().commit(); |
| long id = parent.getId(); |
| em.close(); |
| |
| em = emf.createEntityManager(); |
| parent = em.find(CascadingOneManyParent.class, id); |
| assertNotNull(parent); |
| assertEquals(2, parent.getChildren().size()); |
| em.getTransaction().begin(); |
| em.remove(parent); |
| em.getTransaction().commit(); |
| assertRemoved(em, id); |
| em.close(); |
| |
| em = emf.createEntityManager(); |
| assertRemoved(em, id); |
| em.close(); |
| } |
| |
| private void assertRemoved(EntityManager em, long id) { |
| assertNull(em.find(CascadingOneManyParent.class, id)); |
| List res = em.createQuery("select c from CascadingOneManyChild c"). |
| getResultList(); |
| assertEquals(0, res.size()); |
| } |
| |
| public void testForeignKey() { |
| JDBCConfiguration conf = (JDBCConfiguration) emf.getConfiguration(); |
| if (!conf.getDBDictionaryInstance().supportsForeignKeys) |
| return; |
| |
| CascadingOneManyParent parent = new CascadingOneManyParent(); |
| parent.setName("parent"); |
| CascadingOneManyChild child; |
| for (int i = 0; i < 2; i++) { |
| child = new CascadingOneManyChild(); |
| child.setName("child" + i); |
| parent.addChild(child); |
| } |
| |
| EntityManager em = emf.createEntityManager(); |
| em.getTransaction().begin(); |
| em.persist(parent); |
| em.getTransaction().commit(); |
| long id = parent.getId(); |
| em.close(); |
| |
| OpenJPAEntityManager oem = (OpenJPAEntityManager) emf. |
| createEntityManager(); |
| parent = oem.find(CascadingOneManyParent.class, id); |
| assertNotNull(parent); |
| assertEquals(2, parent.getChildren().size()); |
| child = parent.getChildren().get(0); |
| oem.getTransaction().begin(); |
| oem.remove(parent); |
| // undelete one child |
| assertTrue(oem.isRemoved(child)); |
| oem.persist(child); |
| assertFalse(oem.isRemoved(child)); |
| assertEquals(parent, child.getParent()); |
| try { |
| oem.getTransaction().commit(); |
| fail("Commit should have failed due to FK constraint violation."); |
| } catch (Exception e) { |
| } |
| oem.close(); |
| } |
| |
| public static void main(String[] args) { |
| TestRunner.run(TestCascadingOneManyWithForeignKey.class); |
| } |
| } |
| |