001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2008-2011 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.plugins.dbcleaner.purges;
021    
022    import org.sonar.api.database.DatabaseSession;
023    import org.sonar.api.database.configuration.Property;
024    import org.sonar.api.database.model.ResourceModel;
025    import org.sonar.api.database.model.User;
026    import org.sonar.plugins.dbcleaner.api.Purge;
027    import org.sonar.plugins.dbcleaner.api.PurgeContext;
028    import org.sonar.plugins.dbcleaner.api.PurgeUtils;
029    
030    import java.util.List;
031    
032    import javax.persistence.Query;
033    
034    /**
035     * @since 2.2
036     */
037    public final class PurgePropertyOrphans extends Purge {
038    
039      public PurgePropertyOrphans(DatabaseSession session) {
040        super(session);
041      }
042    
043      public void purge(PurgeContext context) {
044        purgeResourceOrphans();
045        purgeUserOrphans();
046      }
047    
048      void purgeResourceOrphans() {
049        Query query = getSession().createQuery("SELECT p.id FROM " + Property.class.getSimpleName() +
050            " p WHERE p.resourceId IS NOT NULL AND NOT EXISTS(FROM " + ResourceModel.class.getSimpleName() + " r WHERE r.id=p.resourceId)");
051        List<Integer> idsToDelete = query.getResultList();
052        if (!idsToDelete.isEmpty()) {
053          PurgeUtils.executeQuery(getSession(), "", idsToDelete, "DELETE FROM " + Property.class.getSimpleName() + " WHERE id in (:ids)");
054        }
055      }
056    
057      void purgeUserOrphans() {
058        Query query = getSession().createQuery("SELECT p.id FROM " + Property.class.getSimpleName() +
059            " p WHERE p.userId IS NOT NULL AND NOT EXISTS(FROM " + User.class.getSimpleName() + " u WHERE u.id=p.userId)");
060        List<Integer> idsToDelete = query.getResultList();
061        if (!idsToDelete.isEmpty()) {
062          PurgeUtils.executeQuery(getSession(), "", idsToDelete, "DELETE FROM " + Property.class.getSimpleName() + " WHERE id in (:ids)");
063        }
064      }
065    }