fetchingtest.java

hibernate3.2.6源码和jar包

//$Id: FetchingTest.java 11343 2007-03-24 01:02:24Z epbernard $
package org.hibernate.test.annotations.fetch;

import java.util.Date;

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

/**
 * @author Emmanuel Bernard
 */
public class FetchingTest extends TestCase {
	public void testLazy() throws Exception {
		Session s;
		Transaction tx;
		s = openSession();
		tx = s.beginTransaction();
		Person p = new Person( "Gavin", "King", "JBoss Inc" );
		Stay stay = new Stay( p, new Date(), new Date(), "A380", "Blah", "Blah" );
		p.addStay( stay );
		s.persist( p );
		tx.commit();
		s.clear();
		tx = s.beginTransaction();
		p = (Person) s.createQuery( "from Person p where p.firstName = :name" )
				.setParameter( "name", "Gavin" ).uniqueResult();
		assertFalse( Hibernate.isInitialized( p.getStays() ) );
		s.delete( p );
		tx.commit();
		s.close();
	}

	public void testExtraLazy() throws Exception {
		Session s;
		Transaction tx;
		s = openSession();
		tx = s.beginTransaction();
		Person p = new Person( "Gavin", "King", "JBoss Inc" );
		Stay stay = new Stay( p, new Date(), new Date(), "A380", "Blah", "Blah" );
		p.getOrderedStay().add( stay );
		s.persist( p );
		tx.commit();
		s.clear();
		tx = s.beginTransaction();
		p = (Person) s.createQuery( "from Person p where p.firstName = :name" )
				.setParameter( "name", "Gavin" ).uniqueResult();
		assertFalse( Hibernate.isInitialized( p.getOrderedStay() ) );
		assertEquals( 1, p.getOrderedStay().size() );
		assertFalse( Hibernate.isInitialized( p.getOrderedStay() ) );
		assertEquals( "A380", p.getOrderedStay().get(0).getVessel() );
		assertFalse( Hibernate.isInitialized( p.getOrderedStay() ) );
		s.delete( p );
		tx.commit();
		s.close();
	}

	public void testHibernateFetchingLazy() throws Exception {
		Session s;
		Transaction tx;
		s = openSession();
		tx = s.beginTransaction();
		Person p = new Person( "Gavin", "King", "JBoss Inc" );
		Stay stay = new Stay( null, new Date(), new Date(), "A380", "Blah", "Blah" );
		Stay stay2 = new Stay( null, new Date(), new Date(), "A320", "Blah", "Blah" );
		Stay stay3 = new Stay( null, new Date(), new Date(), "A340", "Blah", "Blah" );
		stay.setOldPerson( p );
		stay2.setVeryOldPerson( p );
		stay3.setVeryOldPerson( p );
		p.addOldStay( stay );
		p.addVeryOldStay( stay2 );
		p.addVeryOldStay( stay3 );
		s.persist( p );
		tx.commit();
		s.clear();
		tx = s.beginTransaction();
		p = (Person) s.createQuery( "from Person p where p.firstName = :name" )
				.setParameter( "name", "Gavin" ).uniqueResult();
		assertFalse( Hibernate.isInitialized( p.getOldStays() ) );
		assertEquals( 1, p.getOldStays().size() );
		assertFalse( "lazy extra is failing", Hibernate.isInitialized( p.getOldStays() ) );
		s.clear();
		stay = (Stay) s.get( Stay.class, stay.getId() );
		assertTrue( ! Hibernate.isInitialized( stay.getOldPerson() ) );
		s.clear();
		stay3 = (Stay) s.get( Stay.class, stay3.getId() );
		assertTrue( "FetchMode.JOIN should overrides lazy options", Hibernate.isInitialized( stay3.getVeryOldPerson() ) );
		s.delete( stay3.getVeryOldPerson() );
		tx.commit();
		s.close();
	}

	public void testOneToManyFetchEager() throws Exception {
		Branch b = new Branch();
		Session s = openSession( );
		s.getTransaction().begin();
		s.persist( b );
		s.flush();
		Leaf l = new Leaf();
		l.setBranch( b );
		s.persist( l );
		s.flush();

		s.clear();

		s.createCriteria( Branch.class ).list();

		s.getTransaction().rollback();
		s.close();
	}

	public FetchingTest(String x) {
		super( x );
	}

	protected Class[] getMappings() {
		return new Class[]{
				Person.class,
				Stay.class,
				Branch.class,
				Leaf.class
		};
	}
}