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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
*
* 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.collection;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.hibernate.MappingException;
import org.hibernate.engine.SessionFactoryImplementor;
import org.hibernate.engine.LoadQueryInfluencers;
import org.hibernate.loader.JoinWalker;
import org.hibernate.persister.collection.QueryableCollection;
/**
* Loads one-to-many associations
*
* The collection persister must implement QueryableCOllection. For
* other collections, create a customized subclass of Loader.
*
* @see BasicCollectionLoader
* @author Gavin King
*/
public class OneToManyLoader extends CollectionLoader {
private static final Logger log = LoggerFactory.getLogger(OneToManyLoader.class);
public OneToManyLoader(
QueryableCollection oneToManyPersister,
SessionFactoryImplementor session,
LoadQueryInfluencers loadQueryInfluencers) throws MappingException {
this( oneToManyPersister, 1, session, loadQueryInfluencers );
}
public OneToManyLoader(
QueryableCollection oneToManyPersister,
int batchSize,
SessionFactoryImplementor factory,
LoadQueryInfluencers loadQueryInfluencers) throws MappingException {
this( oneToManyPersister, batchSize, null, factory, loadQueryInfluencers );
}
public OneToManyLoader(
QueryableCollection oneToManyPersister,
int batchSize,
String subquery,
SessionFactoryImplementor factory,
LoadQueryInfluencers loadQueryInfluencers) throws MappingException {
super( oneToManyPersister, factory, loadQueryInfluencers );
JoinWalker walker = new OneToManyJoinWalker(
oneToManyPersister,
batchSize,
subquery,
factory,
loadQueryInfluencers
);
initFromWalker( walker );
postInstantiate();
log.debug( "Static select for one-to-many " + oneToManyPersister.getRole() + ": " + getSQLString() );
}
}