Java 类org.hibernate.collection.PersistentMap 实例源码

public PersistentCollection instantiate(SessionImplementor session, CollectionPersister persister, Serializable key) {
    if ( session.getEntityMode()==EntityMode.DOM4J ) {
        return new PersistentMapElementHolder(session, persister, key);
    }
    else {
        return new PersistentMap(session);
    }
}

public PersistentCollection wrap(SessionImplementor session, Object collection) {
    if ( session.getEntityMode()==EntityMode.DOM4J ) {
        return new PersistentMapElementHolder( session, (Element) collection );
    }
    else {
        return new PersistentMap( session, (java.util.Map) collection );
    }
}

public void init()
{
  collectionMap.put(PersistentBag.class, ArrayList.class);
  collectionMap.put(PersistentList.class, ArrayList.class);
  collectionMap.put(PersistentMap.class, HashMap.class);
  collectionMap.put(PersistentSet.class, HashSet.class);
  collectionMap.put(PersistentSortedMap.class, TreeMap.class);
  collectionMap.put(PersistentSortedSet.class, TreeSet.class);
}

public void testWriteMethodDirtying() {
    Parent parent = new Parent( "p1" );
    Child child = new Child( "c1" );
    parent.getChildren().put( child.getName(), child );
    child.setParent( parent );
    Child otherChild = new Child( "c2" );

    Session session = openSession();
    session.beginTransaction();
    session.save( parent );
    session.flush();
    // at this point, the set on parent has now been replaced with a PersistentSet...
    PersistentMap children = ( PersistentMap ) parent.getChildren();

    Object old = children.put( child.getName(), child );
    assertTrue( old == child );
    assertFalse( children.isDirty() );

    old = children.remove( otherChild.getName() );
    assertNull( old );
    assertFalse( children.isDirty() );

    HashMap otherMap = new HashMap();
    otherMap.put( child.getName(), child );
    children.putAll( otherMap );
    assertFalse( children.isDirty() );

    otherMap = new HashMap();
    otherMap.put( otherChild.getName(), otherChild );
    children.putAll( otherMap );
    assertTrue( children.isDirty() );

    children.clearDirty();
    session.delete( child );
    children.clear();
    assertTrue( children.isDirty() );
    session.flush();

    children.clear();
    assertFalse( children.isDirty() );

    session.delete( parent );
    session.getTransaction().commit();
    session.close();
}