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.plugins.core.sensors;
021    
022    import org.sonar.api.batch.Decorator;
023    import org.sonar.api.batch.DecoratorContext;
024    import org.sonar.api.batch.DependedUpon;
025    import org.sonar.api.measures.CoreMetrics;
026    import org.sonar.api.measures.Measure;
027    import org.sonar.api.measures.MeasureUtils;
028    import org.sonar.api.measures.Metric;
029    import org.sonar.api.resources.Project;
030    import org.sonar.api.resources.Resource;
031    
032    import java.util.Collection;
033    
034    /**
035     * @since 2.2
036     */
037    public final class FilesDecorator implements Decorator {
038    
039      public boolean shouldExecuteOnProject(Project project) {
040        return true;
041      }
042    
043      @DependedUpon
044      public Metric generateDirectoriesMetric() {
045        return CoreMetrics.FILES;
046      }
047    
048      public void decorate(Resource resource, DecoratorContext context) {
049        if (MeasureUtils.hasValue(context.getMeasure(CoreMetrics.FILES))) {
050          return;
051        }
052    
053        if (Resource.QUALIFIER_CLASS.equals(resource.getQualifier()) || Resource.QUALIFIER_FILE.equals(resource.getQualifier())) {
054          context.saveMeasure(CoreMetrics.FILES, 1.0);
055    
056        } else {
057          Collection<Measure> childrenMeasures = context.getChildrenMeasures(CoreMetrics.FILES);
058          Double sum = MeasureUtils.sum(false, childrenMeasures);
059          if (sum != null) {
060            context.saveMeasure(CoreMetrics.FILES, sum);
061          }
062        }
063      }
064    }