001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2008-2012 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.batch.components;
021    
022    import org.sonar.api.BatchExtension;
023    import org.sonar.api.CoreProperties;
024    import org.sonar.api.database.DatabaseSession;
025    import org.sonar.api.database.model.Snapshot;
026    import org.sonar.api.resources.Qualifiers;
027    
028    import java.util.Date;
029    import java.util.List;
030    
031    public class PastSnapshotFinderByVersion implements BatchExtension {
032    
033      private DatabaseSession session;
034    
035      public PastSnapshotFinderByVersion(DatabaseSession session) {
036        this.session = session;
037      }
038    
039      PastSnapshot findByVersion(Snapshot projectSnapshot, String version) {
040        String hql = "from " + Snapshot.class.getSimpleName() + " where version=:version AND resourceId=:resourceId AND status=:status AND qualifier<>:lib order by createdAt desc";
041        List<Snapshot> snapshots = session.createQuery(hql)
042            .setParameter("version", version)
043            .setParameter("resourceId", projectSnapshot.getResourceId())
044            .setParameter("status", Snapshot.STATUS_PROCESSED)
045            .setParameter("lib", Qualifiers.LIBRARY)
046            .setMaxResults(1)
047            .getResultList();
048    
049        if (snapshots.isEmpty()) {
050          return new PastSnapshot(CoreProperties.TIMEMACHINE_MODE_VERSION);
051        }
052        Snapshot snapshot = snapshots.get(0);
053        Date targetDate = snapshot.getCreatedAt();
054        return new PastSnapshot(CoreProperties.TIMEMACHINE_MODE_VERSION, targetDate, snapshot).setModeParameter(version);
055      }
056    
057    }