//$Id: BackrefTest.java 10976 2006-12-12 23:22:26Z steve.ebersole@jboss.com $
package org.hibernate.test.unidir;
import junit.framework.Test;
import org.hibernate.Hibernate;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.testing.junit.functional.FunctionalTestCase;
import org.hibernate.testing.junit.functional.FunctionalTestClassTestSuite;
/**
* @author Gavin King
*/
public class BackrefTest extends FunctionalTestCase {
public BackrefTest(String str) {
super(str);
}
public String[] getMappings() {
return new String[] { "unidir/ParentChild.hbm.xml" };
}
public String getCacheConcurrencyStrategy() {
return null;
}
public static Test suite() {
return new FunctionalTestClassTestSuite( BackrefTest.class );
}
public void testBackRef() {
Session s = openSession();
Transaction t = s.beginTransaction();
Parent p = new Parent("Marc");
Parent p2 = new Parent("Nathalie");
Child c = new Child("Elvira");
Child c2 = new Child("Blase");
p.getChildren().add(c);
p.getChildren().add(c2);
s.persist(p);
s.persist(p2);
t.commit();
s.close();
s = openSession();
t = s.beginTransaction();
c = (Child) s.get(Child.class, "Elvira");
c.setAge(2);
t.commit();
s.close();
s = openSession();
t = s.beginTransaction();
p = (Parent) s.get(Parent.class, "Marc");
c = (Child) s.get(Child.class, "Elvira");
c.setAge(18);
t.commit();
s.close();
s = openSession();
t = s.beginTransaction();
p = (Parent) s.get(Parent.class, "Marc");
p2 = (Parent) s.get(Parent.class, "Nathalie");
c = (Child) s.get(Child.class, "Elvira");
assertEquals( p.getChildren().indexOf(c), 0 );
p.getChildren().remove(c);
p2.getChildren().add(c);
t.commit();
s.close();
s = openSession();
t = s.beginTransaction();
Parent p3 = new Parent("Marion");
p3.getChildren().add( new Child("Gavin") );
s.merge(p3);
t.commit();
s.close();
s = openSession();
t = s.beginTransaction();
s.createQuery( "delete from Child" ).executeUpdate();
s.createQuery( "delete from Parent" ).executeUpdate();
t.commit();
s.close();
}
public void testBackRefToProxiedEntityOnMerge() {
Session s = openSession();
s.beginTransaction();
Parent me = new Parent( "Steve" );
me.getChildren().add( new Child( "Joe" ) );
s.persist( me );
s.getTransaction().commit();
s.close();
// while detached, add a new element
me.getChildren().add( new Child( "Cece" ) );
me.getChildren().add( new Child( "Austin" ) );
s = openSession();
s.beginTransaction();
// load 'me' to associate it with the new session as a proxy (this may have occurred as 'prior work'
// to the reattachment below)...
Object meProxy = s.load( Parent.class, me.getName() );
assertFalse( Hibernate.isInitialized( meProxy ) );
// now, do the reattchment...
s.merge( me );
s.getTransaction().commit();
s.close();
s = openSession();
s.beginTransaction();
s.createQuery( "delete from Child" ).executeUpdate();
s.createQuery( "delete from Parent" ).executeUpdate();
s.getTransaction().commit();
s.close();
}
}