collectiontest.java

介绍了hibernate的入门有一些基本常用的事例

//$Id: CollectionTest.java,v 1.8 2005/02/24 23:24:59 maxcsaucdk Exp $
package org.hibernate.test.collection;

import java.sql.SQLException;

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

import org.hibernate.Hibernate;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.test.TestCase;

/**
 * @author Gavin King
 */
public class CollectionTest extends TestCase {
	
	public CollectionTest(String str) {
		super(str);
	}

	public void testMerge() throws HibernateException, SQLException {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		User u = new User("gavin");
		u.getPermissions().add( new Permission("obnoxiousness") );
		u.getPermissions().add( new Permission("pigheadedness") );
		s.persist(u);
		t.commit();
		s.close();
		
		s = openSession();
		t = s.beginTransaction();
		User u2 = (User) s.createCriteria(User.class).uniqueResult();
		u2.setPermissions(null); //forces one shot delete
		s.merge(u);
		t.commit();
		s.close();
		
		u.getPermissions().add( new Permission("silliness") );
		
		s = openSession();
		t = s.beginTransaction();
		s.merge(u);
		t.commit();
		s.close();
		
		s = openSession();
		t = s.beginTransaction();
		u2 = (User) s.createCriteria(User.class).uniqueResult();
		assertEquals( u2.getPermissions().size(), 3 );
		assertEquals( ( (Permission) u2.getPermissions().get(0) ).getType(), "obnoxiousness" );
		assertEquals( ( (Permission) u2.getPermissions().get(2) ).getType(), "silliness" );
		t.commit();
		s.close();
		
		s = openSession();
		s.delete(u2);
		s.flush();
		s.connection().commit();
		s.close();
		
	}
	
	public void testFetch() {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		User u = new User("gavin");
		u.getPermissions().add( new Permission("obnoxiousness") );
		u.getPermissions().add( new Permission("pigheadedness") );
		u.getEmailAddresses().add( new Email("[e-mail]") );
		u.getEmailAddresses().add( new Email("[e-mail]") );
		s.persist(u);
		t.commit();
		s.close();
		
		s = openSession();
		t = s.beginTransaction();
		User u2 = (User) s.createCriteria(User.class).uniqueResult();
		assertTrue( Hibernate.isInitialized( u2.getEmailAddresses() ) );
		assertFalse( Hibernate.isInitialized( u2.getPermissions() ) );
		assertEquals( u2.getEmailAddresses().size(), 2 );
		s.delete(u2);
		t.commit();
		s.close();
	}
	
	public void testUpdateOrder() {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		User u = new User("gavin");
		u.getSessionData().put("foo", "foo value");
		u.getSessionData().put("bar", "bar value");
		u.getEmailAddresses().add( new Email("[e-mail]") );
		u.getEmailAddresses().add( new Email("[e-mail]") );
		u.getEmailAddresses().add( new Email("[e-mail]") );
		u.getEmailAddresses().add( new Email("[e-mail]") );
		s.persist(u);
		t.commit();
		s.close();
		
		u.getSessionData().clear();
		u.getSessionData().put("baz", "baz value");
		u.getSessionData().put("bar", "bar value");
		u.getEmailAddresses().remove(0);
		u.getEmailAddresses().remove(2);
		
		s = openSession();
		t = s.beginTransaction();
		s.update(u);
		t.commit();
		s.close();
		
		u.getSessionData().clear();
		u.getEmailAddresses().add(0, new Email("[e-mail]") );
		u.getEmailAddresses().add( new Email("[e-mail]") );
		
		s = openSession();
		t = s.beginTransaction();
		s.update(u);
		t.commit();
		s.close();
		
		s = openSession();
		t = s.beginTransaction();
		s.delete(u);
		t.commit();
		s.close();
		
	}
	
	public void testValueMap() {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		User u = new User("gavin");
		u.getSessionData().put("foo", "foo value");
		u.getSessionData().put("bar", null);
		u.getEmailAddresses().add(null);
		u.getEmailAddresses().add( new Email("[e-mail]") );
		u.getEmailAddresses().add(null);
		u.getEmailAddresses().add(null);
		s.persist(u);
		t.commit();
		s.close();
		
		s = openSession();
		t = s.beginTransaction();
		User u2 = (User) s.createCriteria(User.class).uniqueResult();
		assertFalse( Hibernate.isInitialized( u2.getSessionData() ) );
		assertEquals( u2.getSessionData().size(), 1 );
		assertEquals( u2.getEmailAddresses().size(), 4 );
		u2.getSessionData().put("foo", "new foo value");
		u2.getEmailAddresses().set( 1, new Email("[e-mail]") );
		u2.getEmailAddresses().remove(3);
		u2.getEmailAddresses().remove(2);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		u2 = (User) s.createCriteria(User.class).uniqueResult();
		assertFalse( Hibernate.isInitialized( u2.getSessionData() ) );
		assertEquals( u2.getSessionData().size(), 1 );
		assertEquals( u2.getEmailAddresses().size(), 2 );
		assertEquals( u2.getSessionData().get("foo"), "new foo value" );
		assertEquals( ( (Email) u2.getEmailAddresses().get(1) ).getAddress(), "[e-mail]" );
		s.delete(u2);
		t.commit();
		s.close();
	}
	
	
	
	protected String[] getMappings() {
		return new String[] { "collection/UserPermissions.hbm.xml" };
	}

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

}