/*
* 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.hibernate.engine.spi.LoadQueryInfluencers;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.loader.JoinWalker;
import org.hibernate.internal.util.StringHelper;
/**
* Superclass of walkers for collection initializers
*
* @see CollectionLoader
* @see OneToManyJoinWalker
* @see BasicCollectionJoinWalker
* @author Gavin King
*/
public abstract class CollectionJoinWalker extends JoinWalker {
public CollectionJoinWalker(SessionFactoryImplementor factory, LoadQueryInfluencers loadQueryInfluencers) {
super( factory, loadQueryInfluencers );
}
protected StringBuffer whereString(String alias, String[] columnNames, String subselect, int batchSize) {
if (subselect==null) {
return super.whereString(alias, columnNames, batchSize);
}
else {
StringBuffer buf = new StringBuffer();
if (columnNames.length>1) buf.append('(');
buf.append( StringHelper.join(", ", StringHelper.qualify(alias, columnNames) ) );
if (columnNames.length>1) buf.append(')');
buf.append(" in ")
.append('(')
.append(subselect)
.append(')');
return buf;
}
}
}