/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.jpa.test.ops;
import java.util.Map;
import javax.persistence.EntityManager;
import org.hibernate.cfg.Environment;
import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
import org.junit.Assert;
import org.junit.Test;
/**
* @author Gavin King
* @author Hardy Ferentschik
*/
public class MergeTest extends BaseEntityManagerFunctionalTestCase {
@Test
public void testMergeTree() {
clearCounts();
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
Node root = new Node( "root" );
Node child = new Node( "child" );
root.addChild( child );
em.persist( root );
em.getTransaction().commit();
em.close();
assertInsertCount( 2 );
clearCounts();
root.setDescription( "The root node" );
child.setDescription( "The child node" );
Node secondChild = new Node( "second child" );
root.addChild( secondChild );
em = getOrCreateEntityManager();
em.getTransaction().begin();
em.merge( root );
em.getTransaction().commit();
em.close();
assertInsertCount( 1 );
assertUpdateCount( 2 );
}
public void testMergeTreeWithGeneratedId() {
clearCounts();
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
NumberedNode root = new NumberedNode( "root" );
NumberedNode child = new NumberedNode( "child" );
root.addChild( child );
em.persist( root );
em.getTransaction().commit();
em.close();
assertInsertCount( 2 );
clearCounts();
root.setDescription( "The root node" );
child.setDescription( "The child node" );
NumberedNode secondChild = new NumberedNode( "second child" );
root.addChild( secondChild );
em = getOrCreateEntityManager();
em.getTransaction().begin();
em.merge( root );
em.getTransaction().commit();
em.close();
assertInsertCount( 1 );
assertUpdateCount( 2 );
}
private void clearCounts() {
entityManagerFactory().getStatistics().clear();
}
private void assertInsertCount(int count) {
int inserts = ( int ) entityManagerFactory().getStatistics().getEntityInsertCount();
Assert.assertEquals( count, inserts );
}
private void assertUpdateCount(int count) {
int updates = ( int ) entityManagerFactory().getStatistics().getEntityUpdateCount();
Assert.assertEquals( count, updates );
}
@Override
@SuppressWarnings( {"unchecked"})
protected void addConfigOptions(Map options) {
options.put( Environment.GENERATE_STATISTICS, "true" );
options.put( Environment.STATEMENT_BATCH_SIZE, "0" );
}
@Override
protected Class<?>[] getAnnotatedClasses() {
return new Class<?>[0];
}
@Override
protected String[] getMappings() {
return new String[] { "org/hibernate/jpa/test/ops/Node.hbm.xml" };
}
}