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* 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.cache.jpa;
import java.util.Random;
import javax.persistence.Cache;
import javax.persistence.CacheStoreMode;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityNotFoundException;
import javax.persistence.LockModeType;
import org.apache.openjpa.persistence.cache.jpa.model.CacheableEntity;
import org.apache.openjpa.persistence.test.SingleEMFTestCase;
/**
* Verifies L2 operations using multiple entity manager factories. The EMF which
* does updates does not have the data cache enabled thus, it does not send
* sjvm updates upon commit.
*/
public class TestMultiEMFCacheModes extends SingleEMFTestCase {
public void setUp() {
setUp( CLEAR_TABLES, CacheableEntity.class,
"openjpa.ConnectionFactoryProperties", "PrintParameters=true",
"openjpa.DataCache", "true");
}
/**
* Verifies that the data cache us updated via a em.refresh operation when
* javax.persistence.cache.storeMode = CacheStoreMode.REFRESH and the
* entity is updated in the database.
*/
public void testCacheRefreshModeRefresh() {
EntityManager em = emf.createEntityManager();
// Create a new cacheable entity
CacheableEntity ce = createEntity(em);
int ceid = ce.getId();
// Clear the L1
em.clear();
// Clear the L2 cache
Cache cache = emf.getCache();
cache.evictAll();
assertFalse(cache.contains(CacheableEntity.class, ceid));
// Find the entity, reloading it into the L2
em.getTransaction().begin();
ce = em.find(CacheableEntity.class, ceid);
assertTrue(em.contains(ce));
assertTrue(cache.contains(CacheableEntity.class, ceid));
assertTrue(em.getLockMode(ce) == LockModeType.NONE);
assertEquals(ce.getName(), "Cached Entity");
assertEquals(ce.getVersion(), 1);
em.getTransaction().commit();
// Create a new EMF -WITHOUT- the L2 enabled. If the L2 was enabled, the
// sjvm remote commit provider would evict the entity upon update, throwing
// off the intent of this variation.
EntityManagerFactory emf2 = this.createEMF(CacheableEntity.class,
"openjpa.LockManager", "mixed",
"openjpa.ConnectionFactoryProperties", "PrintParameters=true");
EntityManager em2 = emf2.createEntityManager();
// Find + lock, then update the entity and commit
em2.getTransaction().begin();
CacheableEntity ce2 = em2.find(CacheableEntity.class, ceid, LockModeType.PESSIMISTIC_FORCE_INCREMENT);
ce2.setName("Updated Cached Entity");
em2.getTransaction().commit();
em2.close();
emf2.close();
// Refresh the entity - this will load the entity into the L1 and with storeMode=REFRESH,
// should also refresh it in the L2
java.util.Map<String, Object> cacheStoreModeMap = new java.util.HashMap<String, Object>();
cacheStoreModeMap.put("javax.persistence.cache.storeMode", CacheStoreMode.REFRESH);
em.refresh(ce, cacheStoreModeMap);
// Verify the entity was updated
verifyUpdatedEntity(ce, ceid);
// Verify loading from the L1
ce = em.find(CacheableEntity.class, ceid);
// Verify the entity was updated
verifyUpdatedEntity(ce, ceid);
// Clear the L1
em.clear();
// Assert the L2 contains the entity
assertTrue(cache.contains(CacheableEntity.class, ceid));
// Reload the entity from the L2
ce = em.find(CacheableEntity.class, ceid);
// Verify the entity in the L2 was updated
verifyUpdatedEntity(ce, ceid);
em.close();
}
/**
* Verifies that the data cache us updated via a em.refresh operation when
* javax.persistence.cache.storeMode = CacheStoreMode.REFRESH and the
* record is removed from the database.
*/
public void testCacheRefreshModeRefreshDelete() {
EntityManager em = emf.createEntityManager();
// Create a new cachable entity
CacheableEntity ce = createEntity(em);
int ceid = ce.getId();
// Clear the L2 cache
Cache cache = emf.getCache();
cache.evictAll();
assertFalse(cache.contains(CacheableEntity.class, ceid));
// Find the entity, reloading it into the L2
em.getTransaction().begin();
ce = em.find(CacheableEntity.class, ceid);
assertTrue(em.contains(ce));
assertTrue(cache.contains(CacheableEntity.class, ceid));
assertTrue(em.getLockMode(ce) == LockModeType.NONE);
assertEquals(ce.getName(), "Cached Entity");
assertEquals(ce.getVersion(), 1);
em.getTransaction().commit();
// Create a new EMF -WITHOUT- the L2 enabled. If the L2 was enabled, the
// sjvm remote commit provider would evict the entity upon delete, throwing
// off the intent of this variation.
EntityManagerFactory emf2 = this.createEMF(CacheableEntity.class,
"openjpa.LockManager", "mixed",
"openjpa.ConnectionFactoryProperties", "PrintParameters=true");
EntityManager em2 = emf2.createEntityManager();
// Find and delete the entity in a separate context with no L2 configured
em2.getTransaction().begin();
CacheableEntity ce2 = em2.find(CacheableEntity.class, ceid);
assertNotNull(ce2);
em2.remove(ce2);
em2.getTransaction().commit();
em2.close();
emf2.close();
// Refresh the entity with storeMode=REFRESH. The entity has been deleted so it will be
// purged from the L2 cache when the DB load fails.
java.util.Map<String, Object> cacheStoreModeMap = new java.util.HashMap<String, Object>();
cacheStoreModeMap.put("javax.persistence.cache.storeMode", CacheStoreMode.REFRESH);
try {
em.refresh(ce, cacheStoreModeMap);
fail("Refresh operation should have thrown an exception");
} catch (EntityNotFoundException e) {
// expected exception
}
// Try loading from the L1 - OpenJPA will detect the entity was
// removed in another transaction.
try {
ce = em.find(CacheableEntity.class, ceid);
fail("OpenJPA should have detected the removed entity");
} catch (EntityNotFoundException e) {
// expected exception
}
// Clear the L1
em.clear();
// Assert the L2 no longer contains the entity
assertFalse(cache.contains(CacheableEntity.class, ceid));
// Attempt to reload entity from the L2 or database
ce = em.find(CacheableEntity.class, ceid);
// Verify the entity was removed from L2 and DB
assertNull(ce);
em.close();
}
private CacheableEntity createEntity(EntityManager em) {
CacheableEntity ce = new CacheableEntity();
int ceid = new Random().nextInt();
ce.setId(ceid);
ce.setName("Cached Entity");
// Persist the new cachable entity
em.getTransaction().begin();
em.persist(ce);
em.getTransaction().commit();
em.clear();
return ce;
}
private void verifyUpdatedEntity(CacheableEntity ce, int id) {
assertEquals(id, ce.getId());
assertEquals("Updated Cached Entity", ce.getName());
assertEquals(2, ce.getVersion());
}
}