org.hibernate.envers.revisioninfo.RevisionInfoQueryCreator Maven / Gradle / Ivy
/*
* 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.envers.revisioninfo;
import java.util.Date;
import java.util.Set;
import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Restrictions;
/**
* @author Adam Warski (adam at warski dot org)
* @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
*/
public class RevisionInfoQueryCreator {
private final String revisionInfoEntityName;
private final String revisionInfoIdName;
private final String revisionInfoTimestampName;
private final boolean timestampAsDate;
public RevisionInfoQueryCreator(String revisionInfoEntityName, String revisionInfoIdName,
String revisionInfoTimestampName, boolean timestampAsDate) {
this.revisionInfoEntityName = revisionInfoEntityName;
this.revisionInfoIdName = revisionInfoIdName;
this.revisionInfoTimestampName = revisionInfoTimestampName;
this.timestampAsDate = timestampAsDate;
}
public Criteria getRevisionDateQuery(Session session, Number revision) {
return session.createCriteria(revisionInfoEntityName).setProjection(Projections.property(revisionInfoTimestampName))
.add(Restrictions.eq(revisionInfoIdName, revision));
}
public Criteria getRevisionNumberForDateQuery(Session session, Date date) {
return session.createCriteria(revisionInfoEntityName).setProjection(Projections.max(revisionInfoIdName))
.add(Restrictions.le(revisionInfoTimestampName, timestampAsDate ? date : date.getTime()));
}
public Criteria getRevisionsQuery(Session session, Set revisions) {
return session.createCriteria(revisionInfoEntityName).add(Restrictions.in(revisionInfoIdName, revisions));
}
}