eventtest.java

hibernate quickly 一书的各章节源代码

package com.manning.hq.ch05.manytomany;

import junit.framework.TestCase;
import net.sf.hibernate.Session;
import net.sf.hibernate.SessionFactory;
import net.sf.hibernate.Transaction;
import net.sf.hibernate.cfg.Configuration;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

/**
 * Tests persisting an Event with populated Speakers.
 * The Speakers are mapped to the Event as a many-to-many
 * association.
 *
 * @author Nick Heudecker
 * @author Patrick Peak
 */
public class EventTest extends TestCase {

    private SessionFactory factory;

    public EventTest(String name) throws Exception {
        super(name);
        factory = new Configuration().configure().buildSessionFactory();
    }

    public void testSave() throws Exception {
        EventManyToMany event = new EventManyToMany();
        event.setName("Inverse test");
        event.setSpeakers(new HashSet());
        event.getSpeakers().add(new SpeakerManyToMany("John", "Smith", event));
        event.getSpeakers().add(new SpeakerManyToMany("Dave", "Smith", event));
        event.getSpeakers().add(new SpeakerManyToMany("Joan", "Smith", event));
        Session session = factory.openSession();
        Transaction trans = session.beginTransaction();
        session.saveOrUpdate(event);
        trans.commit();
        session.close();

        assertNotNull(event.getId());

        session = factory.openSession();
        event = (EventManyToMany) session.load(EventManyToMany.class, event.getId());
        Set speakers = event.getSpeakers();

        for (Iterator i = speakers.iterator(); i.hasNext();) {
            SpeakerManyToMany speaker = (SpeakerManyToMany) i.next();
            assertNotNull(speaker.getEvents());
        }

        trans = session.beginTransaction();
        session.delete(event);
        trans.commit();
    }

}