Session s = openSession();
Transaction t = s.beginTransaction();
ProductLine cars = new ProductLine();
cars.setDescription( "Cars" );
Model monaro = new Model( cars );
monaro.setName( "monaro" );
monaro.setDescription( "Holden Monaro" );
Model hsv = new Model( cars );
hsv.setName( "hsv" );
hsv.setDescription( "Holden Commodore HSV" );
s.save( cars );
ProductLine oss = new ProductLine();
oss.setDescription( "OSS" );
Model jboss = new Model( oss );
jboss.setName( "JBoss" );
jboss.setDescription( "JBoss Application Server" );
Model hibernate = new Model( oss );
hibernate.setName( "Hibernate" );
hibernate.setDescription( "Hibernate" );
Model cache = new Model( oss );
cache.setName( "JBossCache" );
cache.setDescription( "JBoss TreeCache" );
s.save( oss );
t.commit();
s.close();
s.getSessionFactory().evict( Model.class );
s.getSessionFactory().evict( ProductLine.class );
s = openSession();
t = s.beginTransaction();
List list = s.createQuery( "from ProductLine pl order by pl.description" ).list();
cars = ( ProductLine ) list.get( 0 );
oss = ( ProductLine ) list.get( 1 );
assertFalse( Hibernate.isInitialized( cars.getModels() ) );
assertFalse( Hibernate.isInitialized( oss.getModels() ) );
assertEquals( cars.getModels().size(), 2 ); //fetch both collections
assertTrue( Hibernate.isInitialized( cars.getModels() ) );
assertTrue( Hibernate.isInitialized( oss.getModels() ) );
s.clear();
list = s.createQuery( "from Model m" ).list();
hibernate = ( Model ) s.get( Model.class, hibernate.getId() );
hibernate.getProductLine().getId();
for ( Iterator i = list.iterator(); i.hasNext(); ) {
assertFalse( Hibernate.isInitialized( ( ( Model ) i.next() ).getProductLine() ) );
}
assertEquals( hibernate.getProductLine().getDescription(), "OSS" ); //fetch both productlines
s.clear();
Iterator iter = s.createQuery( "from Model" ).iterate();
list = new ArrayList();
while ( iter.hasNext() ) {
list.add( iter.next() );
}
Model m = ( Model ) list.get( 0 );
m.getDescription(); //fetch a batch of 4
s.clear();
list = s.createQuery( "from ProductLine" ).list();
ProductLine pl = ( ProductLine ) list.get( 0 );
ProductLine pl2 = ( ProductLine ) list.get( 1 );
s.evict( pl2 );
pl.getModels().size(); //fetch just one collection! (how can we write an assertion for that??)
t.commit();
s.close();
s = openSession();
t = s.beginTransaction();
list = s.createQuery( "from ProductLine pl order by pl.description" ).list();
cars = ( ProductLine ) list.get( 0 );
oss = ( ProductLine ) list.get( 1 );
assertEquals( cars.getModels().size(), 2 );
assertEquals( oss.getModels().size(), 3 );
s.delete( cars );
s.delete( oss );
t.commit();
s.close();
