public static EntityPersister createClassPersister(PersistentClass model,
    EntityRegionAccessStrategy cacheAccessStrategy,
    SessionFactoryImplementor factory,
    Mapping cfg) throws HibernateException 
{
	   
		Class persisterClass = model.getEntityPersisterClass();
		if ( persisterClass == null || persisterClass == SingleTableEntityPersister.class ) {
			return new SingleTableEntityPersister( model, cacheAccessStrategy, factory, cfg );
		}
		else if ( persisterClass == JoinedSubclassEntityPersister.class ) {
			return new JoinedSubclassEntityPersister( model, cacheAccessStrategy, factory, cfg );
		}
		else if ( persisterClass == UnionSubclassEntityPersister.class ) {
			return new UnionSubclassEntityPersister( model, cacheAccessStrategy, factory, cfg );
		}
		else {
			return create( persisterClass, model, cacheAccessStrategy, factory, cfg );
		}
}

 public static CollectionPersister createCollectionPersister(Configuration cfg,
    Collection model,
    CollectionRegionAccessStrategy cacheAccessStrategy,
    SessionFactoryImplementor factory) throws HibernateException 
{
		Class persisterClass = model.getCollectionPersisterClass();
		if ( persisterClass == null ) {
			return model.isOneToMany()
					? ( CollectionPersister ) new OneToManyPersister( model, cacheAccessStrategy, cfg, factory )
					: ( CollectionPersister ) new BasicCollectionPersister( model, cacheAccessStrategy, cfg, factory );
		}
		else {
			return create( persisterClass, cfg, model, cacheAccessStrategy, factory );
		}
}