/*
* Copyright 2010, Red Hat, Inc. and individual contributors as indicated by the
* @author tags. See the copyright.txt file in the distribution for a full
* listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This software 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 software; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA, or see the FSF
* site: http://www.fsf.org.
*/
package org.zanata.search;
import org.hibernate.Query;
import org.hibernate.ScrollMode;
import org.hibernate.ScrollableResults;
import org.hibernate.search.FullTextSession;
import org.zanata.model.HTextFlowTarget;
/**
* Indexing strategy specific to HTextFlowTargets. This indexing strategy
* eagerly loads all of HTextFlowTarget's indexable relationships and fetches
* its results in a memory-efficient manner.
*
* @author Carlos Munoz <a
* href="mailto:camunoz@redhat.com">camunoz@redhat.com</a>
*/
public class HTextFlowTargetIndexingStrategy extends
AbstractIndexingStrategy<HTextFlowTarget> {
public HTextFlowTargetIndexingStrategy() {
super(HTextFlowTarget.class);
}
@Override
protected void onEntityIndexed(int n, FullTextSession session) {
// Nothing to do
}
@Override
protected ScrollableResults queryResults(int ignoredOffset, FullTextSession session) {
// TODO move this query into something like HTextFlowTargetStreamingDAO
Query query =
session.createQuery(
"from HTextFlowTarget tft "
+ "join fetch tft.locale "
+ "join fetch tft.textFlow "
+ "join fetch tft.textFlow.document "
+ "join fetch tft.textFlow.document.locale "
+ "join fetch tft.textFlow.document.projectIteration "
+ "join fetch tft.textFlow.document.projectIteration.project");
query.setFetchSize(Integer.MIN_VALUE);
return query.scroll(ScrollMode.FORWARD_ONLY);
}
}