org.hibernate.loader.plan.build.internal.returns.CollectionFetchableIndexCompositeGraph Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2013, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.loader.plan.build.internal.returns;
import org.hibernate.loader.plan.build.spi.ExpandingCompositeQuerySpace;
import org.hibernate.loader.plan.spi.CollectionFetchableIndex;
import org.hibernate.loader.plan.spi.CollectionReference;
import org.hibernate.loader.plan.spi.EntityReference;
import org.hibernate.loader.plan.spi.Fetch;
/**
* Models the index graph of a collection, where the index are composite. This can only be a Map, where the keys are
* composite
*
* @author Steve Ebersole
*/
public class CollectionFetchableIndexCompositeGraph
extends AbstractCompositeReference
implements CollectionFetchableIndex {
private final CollectionReference collectionReference;
public CollectionFetchableIndexCompositeGraph(
CollectionReference collectionReference,
ExpandingCompositeQuerySpace compositeQuerySpace) {
super(
compositeQuerySpace,
false,
collectionReference.getPropertyPath().append( "" )
);
this.collectionReference = collectionReference;
}
@Override
public CollectionReference getCollectionReference() {
return collectionReference;
}
@Override
public EntityReference resolveEntityReference() {
return Fetch.class.isInstance( collectionReference ) ?
Fetch.class.cast( collectionReference ).getSource().resolveEntityReference() :
null;
}
}