| /* |
| * 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; |
| |
| import java.sql.Connection; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| import javax.persistence.EntityManager; |
| import javax.persistence.EntityTransaction; |
| import javax.persistence.Query; |
| |
| import org.apache.openjpa.jdbc.conf.JDBCConfiguration; |
| import org.apache.openjpa.jdbc.sql.DerbyDictionary; |
| import org.apache.openjpa.kernel.QueryLanguages; |
| import org.apache.openjpa.lib.jdbc.DelegatingConnection; |
| import org.apache.openjpa.persistence.test.SingleEMFTestCase; |
| |
| public class TestUnwrap extends SingleEMFTestCase { |
| |
| /** |
| * Tests a query can be unwrapped as an instance of a series of class or |
| * interface. |
| */ |
| public void testValidQueryUnwrap() { |
| OpenJPAEntityManager em = emf.createEntityManager(); |
| Query query = em.createQuery(QueryLanguages.LANG_SQL,""); |
| |
| Class[] validCasts = new Class[] { |
| org.apache.openjpa.persistence.OpenJPAQuery.class, |
| org.apache.openjpa.persistence.OpenJPAQuerySPI.class, |
| org.apache.openjpa.kernel.DelegatingQuery.class, |
| org.apache.openjpa.kernel.Query.class, |
| org.apache.openjpa.kernel.QueryImpl.class |
| }; |
| for (Class<?> c : validCasts) { |
| Object unwrapped = query.unwrap(c); |
| assertTrue(c.isInstance(unwrapped)); |
| } |
| em.close(); |
| } |
| |
| /** |
| * Tests a EntityManager can be unwrapped as an instance of a series of |
| * class or interface. |
| */ |
| public void testValidEntityManagerUnwrap() { |
| EntityManager em = emf.createEntityManager(); |
| |
| Class<?>[] validCasts = new Class[] { |
| org.apache.openjpa.persistence.OpenJPAEntityManager.class, |
| org.apache.openjpa.persistence.OpenJPAEntityManagerSPI.class, |
| org.apache.openjpa.kernel.DelegatingBroker.class, |
| org.apache.openjpa.kernel.Broker.class |
| }; |
| for (Class<?> c : validCasts) { |
| Object unwrapped = em.unwrap(c); |
| assertTrue(c.isInstance(unwrapped)); |
| } |
| em.close(); |
| } |
| |
| /** |
| * Tests a EntityManager can be unwrapped as an instance of a series of |
| * class or interface. |
| */ |
| public void testValidOtherUnwrap() { |
| EntityManager em = emf.createEntityManager(); |
| |
| Class<?>[] validCasts = new Class[] { |
| java.sql.Connection.class |
| }; |
| for (Class<?> c : validCasts) { |
| Object unwrapped = em.unwrap(c); |
| assertTrue(c.isInstance(unwrapped)); |
| } |
| |
| em.close(); |
| } |
| |
| public void testConnectionUnwrap() throws Exception { |
| String dbDict = ((JDBCConfiguration) emf.getConfiguration()).getDBDictionaryInstance().getClass().getName(); |
| |
| EntityManager em = emf.createEntityManager(); |
| OpenJPAEntityManager oem = em.unwrap(OpenJPAEntityManager.class); |
| try { |
| Connection c = (Connection) oem.getConnection(); |
| assertNotNull(c); |
| assertTrue(DelegatingConnection.class.isAssignableFrom(c.getClass())); |
| |
| List<Class> acceptedConnectionClassTypes = new ArrayList<>(); |
| if (DerbyDictionary.class.getName().equals(dbDict)) { |
| // Connection type can be network or embedded |
| String[] connectionTypes = { |
| "org.apache.derby.impl.jdbc.EmbedConnection40", |
| "org.apache.derby.impl.jdbc.EmbedConnection30", |
| "org.apache.derby.iapi.jdbc.BrokeredConnection40", |
| "org.apache.derby.iapi.jdbc.BrokeredConnection30" }; |
| for (String ct : connectionTypes) { |
| try { |
| Class cls = Class.forName(ct); |
| acceptedConnectionClassTypes.add(cls); |
| } catch (ClassNotFoundException cnfe) { |
| // Swallow |
| } |
| } |
| } |
| |
| if (!acceptedConnectionClassTypes.isEmpty()) { |
| boolean pass = false; |
| for (Class cls : acceptedConnectionClassTypes) { |
| try { |
| Connection castC = (Connection) c.unwrap(cls); |
| assertNotNull(castC); |
| assertEquals(cls, castC.getClass()); |
| pass = true; |
| break; |
| } catch (Throwable t) { |
| // Swallow |
| } |
| |
| assertTrue(pass); |
| } |
| } |
| } finally { |
| em.close(); |
| } |
| } |
| |
| public void testNegativeConnectionUnwrap() { |
| EntityManager em = emf.createEntityManager(); |
| OpenJPAEntityManager oem = em.unwrap(OpenJPAEntityManager.class); |
| |
| try { |
| Connection c = (Connection) oem.getConnection(); |
| assertNotNull(c); |
| assertTrue(DelegatingConnection.class.isAssignableFrom(c.getClass())); |
| |
| // Make a completely bogus unwrap() attempt |
| try { |
| c.unwrap(TestUnwrap.class); |
| fail("Bogus unwrap should have thrown a SQLException."); |
| } catch (java.sql.SQLException se) { |
| // Expected |
| } |
| } finally { |
| em.close(); |
| } |
| } |
| |
| /** |
| * Tests a EntityManager can not be unwrapped as Object class, null or an interface. |
| * And each such failure raises a Persistence Exception and causes an active transaction |
| * to rollback. |
| */ |
| public void testInvalidEntityManagerUnwrap() { |
| EntityManager em = emf.createEntityManager(); |
| |
| Class<?>[] invalidCasts = new Class[] { |
| Object.class, |
| Properties.class, |
| Map.class, |
| null, |
| }; |
| for (Class<?> c : invalidCasts) { |
| try { |
| em.getTransaction().begin(); |
| em.unwrap(c); |
| fail("Expected to fail to unwarp with invalid " + c); |
| } catch (PersistenceException e) { |
| EntityTransaction txn = em.getTransaction(); |
| assertTrue(txn.getRollbackOnly()); |
| txn.rollback(); |
| } |
| } |
| em.close(); |
| } |
| |
| /** |
| * Tests a Query can not be unwrapped as Object class, null or an interface. |
| * And each such failure raises a Persistence Exception and causes an active transaction |
| * to rollback. |
| */ |
| public void testInvalidQueryUnwrap() { |
| OpenJPAEntityManager em = emf.createEntityManager(); |
| |
| Class<?>[] invalidCasts = new Class[] { |
| Object.class, |
| Properties.class, |
| Map.class, |
| null, |
| }; |
| for (Class<?> c : invalidCasts) { |
| try { |
| em.getTransaction().begin(); |
| Query query = em.createQuery(QueryLanguages.LANG_SQL,""); |
| query.unwrap(c); |
| fail("Expected to fail to unwarp with invalid " + c); |
| } catch (PersistenceException e) { |
| EntityTransaction txn = em.getTransaction(); |
| assertTrue(txn.getRollbackOnly()); |
| txn.rollback(); |
| } |
| } |
| em.close(); |
| } |
| |
| } |