orphantest.java

介绍了hibernate的入门有一些基本常用的事例

//$Id: OrphanTest.java,v 1.2 2005/02/21 14:41:03 oneovthafew Exp $
package org.hibernate.test.orphan;

import junit.framework.Test;
import junit.framework.TestSuite;

import org.hibernate.Hibernate;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.test.TestCase;
import org.hibernate.util.SerializationHelper;

/**
 * @author Gavin King
 */
public class OrphanTest extends TestCase {
	
	public OrphanTest(String str) {
		super(str);
	}
	
	public void testOrphanDeleteOnSaveOrUpdate() {
		Session session = openSession();
		Transaction t = session.beginTransaction();
		Product prod = new Product();
		prod.setName("Widget");
		Part part = new Part();
		part.setName("Widge");
		part.setDescription("part if a Widget");
		prod.getParts().add(part);
		Part part2 = new Part();
		part2.setName("Get");
		part2.setDescription("another part if a Widget");
		prod.getParts().add(part2);
		session.persist(prod);
		t.commit();
		session.close();
		
		prod.getParts().remove(part);
		
		session = openSession();
		t = session.beginTransaction();
		session.saveOrUpdate(prod);
		t.commit();
		session.close();
		
		session = openSession();
		t = session.beginTransaction();
		assertNull( session.get(Part.class, "Widge") );
		assertNotNull( session.get(Part.class, "Get") );
		session.delete( session.get(Product.class, "Widget") );
		t.commit();
		session.close();
	}
	
	public void testOrphanDeleteOnSaveOrUpdateAfterSerialization() {
		Session session = openSession();
		Transaction t = session.beginTransaction();
		Product prod = new Product();
		prod.setName("Widget");
		Part part = new Part();
		part.setName("Widge");
		part.setDescription("part if a Widget");
		prod.getParts().add(part);
		Part part2 = new Part();
		part2.setName("Get");
		part2.setDescription("another part if a Widget");
		prod.getParts().add(part2);
		session.persist(prod);
		t.commit();
		session.close();
		
		prod.getParts().remove(part);
		
		prod = (Product) SerializationHelper.clone(prod);
		
		session = openSession();
		t = session.beginTransaction();
		session.saveOrUpdate(prod);
		t.commit();
		session.close();
		
		session = openSession();
		t = session.beginTransaction();
		assertNull( session.get(Part.class, "Widge") );
		assertNotNull( session.get(Part.class, "Get") );
		session.delete( session.get(Product.class, "Widget") );
		t.commit();
		session.close();
	}
	
	public void testOrphanDelete() {
		Session session = openSession();
		Transaction t = session.beginTransaction();
		Product prod = new Product();
		prod.setName("Widget");
		Part part = new Part();
		part.setName("Widge");
		part.setDescription("part if a Widget");
		prod.getParts().add(part);
		Part part2 = new Part();
		part2.setName("Get");
		part2.setDescription("another part if a Widget");
		prod.getParts().add(part2);
		session.persist(prod);
		t.commit();
		session.close();
		
		session = openSession();
		t = session.beginTransaction();
		prod = (Product) session.get(Product.class, "Widget");
		assertTrue( Hibernate.isInitialized( prod.getParts() ) );
		part = (Part) session.get(Part.class, "Widge");
		prod.getParts().remove(part);
		t.commit();
		session.close();
		
		session = openSession();
		t = session.beginTransaction();
		assertNull( session.get(Part.class, "Widge") );
		assertNotNull( session.get(Part.class, "Get") );
		session.delete( session.get(Product.class, "Widget") );
		t.commit();
		session.close();
	}
	
	public void testOrphanDeleteOnMerge() {
		Session session = openSession();
		Transaction t = session.beginTransaction();
		Product prod = new Product();
		prod.setName("Widget");
		Part part = new Part();
		part.setName("Widge");
		part.setDescription("part if a Widget");
		prod.getParts().add(part);
		Part part2 = new Part();
		part2.setName("Get");
		part2.setDescription("another part if a Widget");
		prod.getParts().add(part2);
		session.persist(prod);
		t.commit();
		session.close();
		
		prod.getParts().remove(part);
		
		session = openSession();
		t = session.beginTransaction();
		session.merge(prod);
		t.commit();
		session.close();
		
		session = openSession();
		t = session.beginTransaction();
		assertNull( session.get(Part.class, "Widge") );
		assertNotNull( session.get(Part.class, "Get") );
		session.delete( session.get(Product.class, "Widget") );
		t.commit();
		session.close();
	}
	
	
	protected String[] getMappings() {
		return new String[] { "orphan/Product.hbm.xml" };
	}

	public static Test suite() {
		return new TestSuite(OrphanTest.class);
	}

}