//$Id: EntityManagerSerializationTest.java 10003 2006-06-09 01:31:32Z epbernard $
package org.hibernate.ejb.test.ejb3configuration;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.util.Date;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import org.hibernate.ejb.HibernateEntityManager;
import org.hibernate.ejb.test.Cat;
import org.hibernate.ejb.test.Distributor;
import org.hibernate.ejb.test.Item;
import org.hibernate.ejb.test.Wallet;
/**
* @author Emmanuel Bernard
*/
public class EntityManagerSerializationTest extends org.hibernate.ejb.test.TestCase {
public void testSerialization() throws Exception {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream( stream );
out.writeObject( factory );
out.close();
byte[] serialized = stream.toByteArray();
stream.close();
ByteArrayInputStream byteIn = new ByteArrayInputStream( serialized );
ObjectInputStream in = new ObjectInputStream( byteIn );
EntityManagerFactory seriallizedFactory = (EntityManagerFactory) in.readObject();
in.close();
byteIn.close();
EntityManager em = seriallizedFactory.createEntityManager();
//em.getTransaction().begin();
//em.setFlushMode( FlushModeType.NEVER );
Cat cat = new Cat();
cat.setAge( 3 );
cat.setDateOfBirth( new Date() );
cat.setLength( 22 );
cat.setName( "Kitty" );
em.persist( cat );
Item item = new Item();
item.setName( "Train Ticket" );
item.setDescr( "Paris-London" );
em.persist( item );
//em.getTransaction().commit();
//em.getTransaction().begin();
item.setDescr( "Paris-Bruxelles" );
//em.getTransaction().commit();
//fake the in container work
( (HibernateEntityManager) em ).getSession().disconnect();
stream = new ByteArrayOutputStream();
out = new ObjectOutputStream( stream );
out.writeObject( em );
out.close();
serialized = stream.toByteArray();
stream.close();
byteIn = new ByteArrayInputStream( serialized );
in = new ObjectInputStream( byteIn );
em = (EntityManager) in.readObject();
in.close();
byteIn.close();
//fake the in container work
em.getTransaction().begin();
item = em.find( Item.class, item.getName() );
item.setDescr( item.getDescr() + "-Amsterdam" );
cat = (Cat) em.createQuery( "select c from " + Cat.class.getName() + " c" ).getSingleResult();
cat.setLength( 34 );
em.flush();
em.remove( item );
em.remove( cat );
em.flush();
em.getTransaction().commit();
em.close();
}
public Class[] getAnnotatedClasses() {
return new Class[]{
Item.class,
Distributor.class,
Wallet.class,
Cat.class
};
}
}