| /* |
| * 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 java.math.BigDecimal; |
| |
| import org.apache.openjpa.persistence.test.SingleEMTestCase; |
| |
| import junit.textui.TestRunner; |
| |
| /** |
| * Test case to ensure that the proper JPA clear semantics are processed. |
| * |
| * @author Kevin Sutter |
| */ |
| public class TestEntityManagerClear |
| extends SingleEMTestCase { |
| |
| @Override |
| public void setUp() { |
| setUp(AllFieldTypes.class, Item.class,CLEAR_TABLES); |
| } |
| |
| public void testDetach() { |
| // Create EntityManager and Start a transaction (1) |
| begin(); |
| |
| // Insert a new object and flush |
| AllFieldTypes testObject1 = new AllFieldTypes(); |
| testObject1.setStringField("my test object1"); |
| persist(testObject1); |
| em.flush(); |
| assertTrue("testObject1 not found in pc", em.contains(testObject1)); |
| |
| // Insert another object and persist |
| AllFieldTypes testObject2 = new AllFieldTypes(); |
| testObject1.setStringField("my test object2"); |
| persist(testObject2); |
| assertTrue("testObject2 not found in pc", em.contains(testObject2)); |
| |
| // Rollback to clear the PC |
| rollback(); |
| |
| assertFalse("testObject1 found in pc", em.contains(testObject1)); |
| assertFalse("testObject2 found in pc", em.contains(testObject2)); |
| |
| } |
| |
| public void testClear() { |
| // Create EntityManager and Start a transaction (1) |
| begin(); |
| |
| // Insert a new object and flush |
| AllFieldTypes testObject1 = new AllFieldTypes(); |
| testObject1.setStringField("my test object1"); |
| persist(testObject1); |
| em.flush(); |
| |
| // Clear the PC for new object 2 |
| AllFieldTypes testObject2 = new AllFieldTypes(); |
| testObject1.setStringField("my test object2"); |
| persist(testObject2); |
| em.clear(); |
| |
| // Commit the transaction (only object 1 should be in database) |
| commit(); |
| |
| // Start a new transaction |
| begin(); |
| |
| // Attempt retrieve of Object1 from previous PC (should exist) |
| assertEquals(1, query("select x from AllFieldTypes x " |
| + "where x.stringField = 'my test object1'"). |
| getResultList().size()); |
| |
| // Attempt retrieve of Object2 from previous PC (should not exist) |
| assertEquals(0, query("select x from AllFieldTypes x " |
| + "where x.stringField = 'my test object2'"). |
| getResultList().size()); |
| |
| // Rollback the transaction and close everything |
| rollback(); |
| } |
| |
| public void testNewClearMerge() { |
| // Create EntityManager and Start a transaction (1) |
| begin(); |
| |
| // Insert a new object then clear persistent context |
| AllFieldTypes testObject1 = new AllFieldTypes(); |
| testObject1.setStringField("my test object1"); |
| persist(testObject1); |
| //Object1 is not flushed to DB but only detached by clear(). |
| em.clear(); |
| |
| assertEquals(0, query("select x from AllFieldTypes x " |
| + "where x.stringField = 'my test object1'"). |
| getResultList().size()); |
| em.merge(testObject1); |
| commit(); |
| |
| //Start a new transaction |
| begin(); |
| |
| // Expect Object1 is persisted after merge and commit. |
| assertEquals(1, query("select x from AllFieldTypes x " |
| + "where x.stringField = 'my test object1'"). |
| getResultList().size()); |
| |
| // Rollback the transaction and close everything |
| rollback(); |
| } |
| |
| public void testUpdateClearMerge() { |
| // Create EntityManager and Start a transaction (1) |
| begin(); |
| |
| // Insert a new object |
| Item i = new Item(); |
| i.setItemName("cup"); |
| persist(i); |
| commit(); |
| int id = i.getItemId(); |
| |
| begin(); |
| Item i2 = em.find(Item.class, id); |
| i2.setItemName("fancy cup"); |
| //Updated item is not flushed to DB but only detached by clear(). |
| em.clear(); |
| assertEquals(0, query("select x from Item x " |
| + "where x.itemName = 'fancy cup'"). |
| getResultList().size()); |
| em.merge(i2); |
| commit(); |
| |
| //Start a new transaction |
| begin(); |
| |
| //should be changed by previous commit |
| assertEquals(1, query("select x from Item x " |
| + "where x.itemName = 'fancy cup'"). |
| getResultList().size()); |
| |
| // Rollback the transaction and close everything |
| rollback(); |
| } |
| |
| /** |
| * Test modify entity then clear context which cause unflushed modified |
| * entity detached. Do more modification on detached entity, merge back and |
| * commit. Expect both changes before clear and after clear are persisted. |
| * |
| */ |
| public void testUpdateClearUpdateMerge() { |
| // Create EntityManager and Start a transaction (1) |
| begin(); |
| |
| // Insert a new object |
| Item i = new Item(); |
| i.setItemName("cup"); |
| i.setItemPrice(new BigDecimal(100.00)); |
| persist(i); |
| commit(); |
| int id = i.getItemId(); |
| |
| begin(); |
| Item i2 = em.find(Item.class, id); |
| i2.setItemName("fancy cup"); |
| //Updated item is not flushed to DB but only detached by clear(). |
| em.clear(); |
| assertEquals(0, query("select x from Item x " |
| + "where x.itemName = 'fancy cup'"). |
| getResultList().size()); |
| i2.setItemPrice(new BigDecimal(120.00)); |
| em.merge(i2); |
| commit(); |
| |
| //Start a new transaction |
| begin(); |
| |
| //should be changed by previous commit |
| assertEquals(1, query("select x from Item x " |
| + "where x.itemName = 'fancy cup' and x.itemPrice = 120.00"). |
| getResultList().size()); |
| |
| // Rollback the transaction and close everything |
| rollback(); |
| } |
| |
| public void testUpdateFlushClearUpdateMerge() { |
| // Create EntityManager and Start a transaction (1) |
| begin(); |
| |
| // Insert a new object |
| Item i = new Item(); |
| i.setItemName("cup"); |
| i.setItemPrice(new BigDecimal(100.00)); |
| persist(i); |
| commit(); |
| int id = i.getItemId(); |
| |
| begin(); |
| Item i2 = em.find(Item.class, id); |
| i2.setItemName("fancy cup"); |
| em.flush(); |
| em.clear(); |
| //it is updated because it is flushed before clear(); |
| assertEquals(1, query("select x from Item x " |
| + "where x.itemName = 'fancy cup'"). |
| getResultList().size()); |
| i2.setItemPrice(new BigDecimal(120.00)); |
| i2.setItemName("red cup"); |
| em.merge(i2); |
| commit(); |
| |
| //Start a new transaction |
| begin(); |
| |
| //should be changed by previous commit |
| assertEquals(1, query("select x from Item x " |
| + "where x.itemName = 'red cup' and x.itemPrice = 120.00"). |
| getResultList().size()); |
| |
| // Rollback the transaction and close everything |
| rollback(); |
| } |
| public static void main(String[] args) { |
| TestRunner.run(TestEntityManagerClear.class); |
| } |
| } |
| |