Spring Framework example source code file (EntityManagerFactoryUtilsTests.java)

This example Spring Framework source code file (EntityManagerFactoryUtilsTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

dataaccessexception, entityexistsexception, entitymanager, entitymanagerfactory, entitymanagerfactory, illegalargumentexception, illegalargumentexception, illegalstateexception, invaliddataaccessapiusageexception, mockcontrol, mockcontrol, nonuniqueresultexception, persistenceexception, unsupportedoperationexception

The Spring Framework EntityManagerFactoryUtilsTests.java source code

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * Licensed 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.springframework.orm.jpa;

import javax.persistence.EntityExistsException;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityNotFoundException;
import javax.persistence.NoResultException;
import javax.persistence.NonUniqueResultException;
import javax.persistence.OptimisticLockException;
import javax.persistence.PersistenceException;
import javax.persistence.TransactionRequiredException;

import junit.framework.TestCase;
import org.easymock.MockControl;

import org.springframework.dao.DataAccessException;
import org.springframework.dao.DataIntegrityViolationException;
import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.dao.IncorrectResultSizeDataAccessException;
import org.springframework.dao.InvalidDataAccessApiUsageException;
import org.springframework.transaction.support.TransactionSynchronizationManager;

/**
 * @author Costin Leau
 * @author Rod Johnson
 * @author Juergen Hoeller
 */
public class EntityManagerFactoryUtilsTests extends TestCase {

	/*
	 * Test method for
	 * 'org.springframework.orm.jpa.EntityManagerFactoryUtils.doGetEntityManager(EntityManagerFactory)'
	 */
	public void testDoGetEntityManager() {
		// test null assertion
		try {
			EntityManagerFactoryUtils.doGetTransactionalEntityManager(null, null);
			fail("expected exception");
		}
		catch (IllegalArgumentException ex) {
			// it's okay
		}
		MockControl mockControl = MockControl.createControl(EntityManagerFactory.class);
		EntityManagerFactory factory = (EntityManagerFactory) mockControl.getMock();

		mockControl.replay();
		// no tx active
		assertNull(EntityManagerFactoryUtils.doGetTransactionalEntityManager(factory, null));
		mockControl.verify();

		assertTrue(TransactionSynchronizationManager.getResourceMap().isEmpty());
	}

	public void testDoGetEntityManagerWithTx() throws Exception {
		try {
			MockControl mockControl = MockControl.createControl(EntityManagerFactory.class);
			EntityManagerFactory factory = (EntityManagerFactory) mockControl.getMock();

			MockControl managerControl = MockControl.createControl(EntityManager.class);
			EntityManager manager = (EntityManager) managerControl.getMock();

			TransactionSynchronizationManager.initSynchronization();
			mockControl.expectAndReturn(factory.createEntityManager(), manager);

			mockControl.replay();
			// no tx active
			assertSame(manager, EntityManagerFactoryUtils.doGetTransactionalEntityManager(factory, null));
			assertSame(manager, ((EntityManagerHolder)TransactionSynchronizationManager.unbindResource(factory)).getEntityManager());
			
			mockControl.verify();
		}
		finally {
			TransactionSynchronizationManager.clearSynchronization();
		}

		assertTrue(TransactionSynchronizationManager.getResourceMap().isEmpty());
	}
	
	public void testTranslatesIllegalStateException() {
		IllegalStateException ise = new IllegalStateException();
		DataAccessException dex = EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(ise);
		assertSame(ise, dex.getCause());
		assertTrue(dex instanceof InvalidDataAccessApiUsageException);
	}
	
	public void testTranslatesIllegalArgumentException() {
		IllegalArgumentException iae = new IllegalArgumentException();
		DataAccessException dex = EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(iae);
		assertSame(iae, dex.getCause());
		assertTrue(dex instanceof InvalidDataAccessApiUsageException);
	}
	
	/**
	 * We do not convert unknown exceptions. They may result from user code.
	 */
	public void testDoesNotTranslateUnfamiliarException() {
		UnsupportedOperationException userRuntimeException = new UnsupportedOperationException();
		assertNull(
				"Exception should not be wrapped",
				EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(userRuntimeException));
	}

	/*
	 * Test method for
	 * 'org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessException(PersistenceException)'
	 */
	public void testConvertJpaPersistenceException() {
		EntityNotFoundException entityNotFound = new EntityNotFoundException();
		assertSame(JpaObjectRetrievalFailureException.class,
				EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(entityNotFound).getClass());

		NoResultException noResult = new NoResultException();
		assertSame(EmptyResultDataAccessException.class,
				EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(noResult).getClass());

		NonUniqueResultException nonUniqueResult = new NonUniqueResultException();
		assertSame(IncorrectResultSizeDataAccessException.class,
				EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(nonUniqueResult).getClass());

		OptimisticLockException optimisticLock = new OptimisticLockException();
		assertSame(JpaOptimisticLockingFailureException.class,
				EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(optimisticLock).getClass());

		EntityExistsException entityExists = new EntityExistsException("foo");
		assertSame(DataIntegrityViolationException.class,
				EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(entityExists).getClass());

		TransactionRequiredException transactionRequired = new TransactionRequiredException("foo");
		assertSame(InvalidDataAccessApiUsageException.class,
				EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(transactionRequired).getClass());

		PersistenceException unknown = new PersistenceException() {
		};
		assertSame(JpaSystemException.class,
				EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(unknown).getClass());
	}

}