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.squid.decorators;
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.batch.DependsUpon;
026    import org.sonar.api.measures.*;
027    import org.sonar.api.resources.Java;
028    import org.sonar.api.resources.Project;
029    import org.sonar.api.resources.Resource;
030    import org.sonar.api.resources.Scopes;
031    
032    /**
033     * @since 2.6
034     */
035    public final class ClassComplexityDistributionBuilder implements Decorator {
036    
037      private static final Number[] LIMITS = { 0, 5, 10, 20, 30, 60, 90 };
038    
039      @DependsUpon
040      public Metric dependOnComplexity() {
041        return CoreMetrics.COMPLEXITY;
042      }
043    
044      @DependedUpon
045      public Metric generatesFunctionComplexityDistribution() {
046        return CoreMetrics.CLASS_COMPLEXITY_DISTRIBUTION;
047      }
048    
049      public void decorate(Resource resource, DecoratorContext context) {
050        if (shouldExecuteOn(resource, context)) {
051          RangeDistributionBuilder builder = new RangeDistributionBuilder(CoreMetrics.CLASS_COMPLEXITY_DISTRIBUTION, LIMITS);
052          for (DecoratorContext childContext : context.getChildren()) {
053            if (Scopes.isProgramUnit(childContext.getResource())) {
054              Measure complexity = childContext.getMeasure(CoreMetrics.COMPLEXITY);
055              if (complexity != null) {
056                builder.add(complexity.getValue());
057              }
058            }
059          }
060          Measure measure = builder.build(true);
061          measure.setPersistenceMode(PersistenceMode.MEMORY);
062          context.saveMeasure(measure);
063        }
064      }
065    
066      boolean shouldExecuteOn(Resource resource, DecoratorContext context) {
067        return Scopes.isFile(resource) && context.getMeasure(CoreMetrics.COMPLEXITY) != null;
068      }
069    
070      public boolean shouldExecuteOnProject(Project project) {
071        return Java.KEY.equals(project.getLanguageKey());
072      }
073    }