001    /*
002     * SonarQube, open source software quality management tool.
003     * Copyright (C) 2008-2014 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * SonarQube 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     * SonarQube 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 License
017     * along with this program; if not, write to the Free Software Foundation,
018     * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
019     */
020    package org.sonar.batch.index;
021    
022    import com.google.common.collect.Sets;
023    import org.sonar.api.database.model.Snapshot;
024    import org.sonar.api.resources.DuplicatedSourceException;
025    import org.sonar.api.resources.Resource;
026    import org.sonar.core.source.db.SnapshotSourceDao;
027    import org.sonar.core.source.db.SnapshotSourceDto;
028    
029    import javax.annotation.CheckForNull;
030    
031    import java.util.Set;
032    
033    public final class SourcePersister {
034    
035      private Set<Integer> savedSnapshotIds = Sets.newHashSet();
036      private ResourcePersister resourcePersister;
037      private final SnapshotSourceDao sourceDao;
038    
039      public SourcePersister(ResourcePersister resourcePersister, SnapshotSourceDao sourceDao) {
040        this.resourcePersister = resourcePersister;
041        this.sourceDao = sourceDao;
042      }
043    
044      public void saveSource(Resource resource, String source) {
045        Snapshot snapshot = resourcePersister.getSnapshotOrFail(resource);
046        if (isCached(snapshot)) {
047          throw new DuplicatedSourceException(resource);
048        }
049        SnapshotSourceDto dto = new SnapshotSourceDto();
050        dto.setSnapshotId(snapshot.getId().longValue());
051        dto.setData(source);
052        sourceDao.insert(dto);
053        addToCache(snapshot);
054      }
055    
056      @CheckForNull
057      public String getSource(Resource resource) {
058        Snapshot snapshot = resourcePersister.getSnapshot(resource);
059        if (snapshot != null && snapshot.getId() != null) {
060          return sourceDao.selectSnapshotSource(snapshot.getId());
061        }
062        return null;
063      }
064    
065      private boolean isCached(Snapshot snapshot) {
066        return savedSnapshotIds.contains(snapshot.getId());
067      }
068    
069      private void addToCache(Snapshot snapshot) {
070        savedSnapshotIds.add(snapshot.getId());
071      }
072    
073      public void clear() {
074        savedSnapshotIds.clear();
075      }
076    }