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 */
020package org.sonar.batch.index;
021
022import com.google.common.collect.Sets;
023import org.sonar.api.database.DatabaseSession;
024import org.sonar.api.database.model.Snapshot;
025import org.sonar.api.database.model.SnapshotSource;
026import org.sonar.api.resources.DuplicatedSourceException;
027import org.sonar.api.resources.Resource;
028
029import java.util.Set;
030
031public final class SourcePersister {
032
033  private DatabaseSession session;
034  private Set<Integer> savedSnapshotIds = Sets.newHashSet();
035  private ResourcePersister resourcePersister;
036
037  public SourcePersister(DatabaseSession session, ResourcePersister resourcePersister) {
038    this.session = session;
039    this.resourcePersister = resourcePersister;
040  }
041
042  public void saveSource(Resource resource, String source) {
043    Snapshot snapshot = resourcePersister.getSnapshotOrFail(resource);
044    if (isCached(snapshot)) {
045      throw new DuplicatedSourceException(resource);
046    }
047    session.save(new SnapshotSource(snapshot.getId(), source));
048    session.commit();
049    addToCache(snapshot);
050  }
051
052  public String getSource(Resource resource) {
053    SnapshotSource source = null;
054    Snapshot snapshot = resourcePersister.getSnapshot(resource);
055    if (snapshot!=null && snapshot.getId()!=null) {
056      source = session.getSingleResult(SnapshotSource.class, "snapshotId", snapshot.getId());
057    }
058    return source!=null ? source.getData() : null;
059  }
060
061  private boolean isCached(Snapshot snapshot) {
062    return savedSnapshotIds.contains(snapshot.getId());
063  }
064
065  private void addToCache(Snapshot snapshot) {
066    savedSnapshotIds.add(snapshot.getId());
067  }
068
069  public void clear() {
070    savedSnapshotIds.clear();
071  }
072}