| /* |
| * 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.simple; |
| |
| import javax.persistence.EntityManager; |
| |
| import junit.textui.TestRunner; |
| import org.apache.openjpa.persistence.test.SingleEMTestCase; |
| |
| /** |
| * Test case to ensure that the proper JPA merge semantics are processed. |
| * |
| * @author Kevin Sutter |
| */ |
| public class TestEntityManagerMerge |
| extends SingleEMTestCase { |
| |
| public void setUp() { |
| setUp(AllFieldTypes.class, Person.class); |
| } |
| |
| public void testMerge() { |
| // Create EntityManager and Start a transaction (1) |
| begin(); |
| |
| // Insert a new object into the PC |
| AllFieldTypes testObject = new AllFieldTypes(); |
| testObject.setStringField("new test object"); |
| persist(testObject); |
| assertTrue("testObject not found in pc", em.contains(testObject)); |
| |
| // Modify this object... |
| testObject.setStringField("updated test object"); |
| |
| // Attempt to merge this updated object into the PC. Should be ignored. |
| AllFieldTypes mergedObject = em.merge(testObject); |
| assertTrue("mergedObject and testObject are not equal", |
| mergedObject.equals(testObject)); |
| assertTrue("mergedObject and testObject are not ==", |
| mergedObject == testObject); |
| assertTrue("testObject not found in pc", em.contains(testObject)); |
| assertTrue("mergedObject not found in pc", em.contains(mergedObject)); |
| |
| // And, once again... |
| testObject.setStringField("yet another update"); |
| AllFieldTypes mergedObject2 = em.merge(testObject); |
| assertTrue("mergedObject2 and testObject are not equal", |
| mergedObject2.equals(testObject)); |
| assertTrue("mergedObject2 and testObject are not ==", |
| mergedObject2 == testObject); |
| assertTrue("testObject not found in pc", em.contains(testObject)); |
| assertTrue("mergedObject2 not found in pc", em.contains(mergedObject2)); |
| |
| // Rollback |
| rollback(); |
| |
| } |
| |
| /** |
| * This test verifies that persisting a new entity which matches an existing |
| * row in the database succeeds. |
| */ |
| public void testMergeExistingEntity() { |
| Person p = new Person(); |
| p.setId(102); |
| |
| EntityManager em = emf.createEntityManager(); |
| |
| em.getTransaction().begin(); |
| em.persist(p); |
| em.getTransaction().commit(); |
| em.close(); |
| |
| em = emf.createEntityManager(); |
| p = new Person(); |
| p.setId(102); |
| p.setForename("Jane"); |
| |
| em.getTransaction().begin(); |
| em.merge(p); |
| em.getTransaction().commit(); |
| |
| em.close(); |
| |
| em = emf.createEntityManager(); |
| p = (Person) em.createQuery("Select p from Person p where p.id = 102") |
| .getSingleResult(); |
| |
| assertNotNull(p); |
| assertEquals("Jane", p.getForename()); |
| |
| em.close(); |
| } |
| |
| public static void main(String[] args) { |
| TestRunner.run(TestEntityManagerMerge.class); |
| } |
| } |
| |