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.batch;
021    
022    import com.google.common.collect.HashMultimap;
023    import com.google.common.collect.SetMultimap;
024    import org.sonar.api.batch.BatchExtensionDictionnary;
025    import org.sonar.api.batch.Decorator;
026    import org.sonar.api.measures.Metric;
027    import org.sonar.api.resources.Project;
028    
029    import java.util.*;
030    
031    public final class DecoratorsSelector {
032    
033      private BatchExtensionDictionnary dictionnary;
034    
035      public DecoratorsSelector(BatchExtensionDictionnary dictionnary) {
036        this.dictionnary = dictionnary;
037      }
038    
039      public Collection<Decorator> select(Project project) {
040        List<Decorator> decorators = new ArrayList<Decorator>(dictionnary.select(Decorator.class, project, false));
041        SetMultimap<Metric, Decorator> decoratorsByGeneratedMetric = getDecoratorsByMetric(decorators);
042        for (Metric metric : dictionnary.select(Metric.class)) {
043          if (metric.getFormula() != null) {
044            decorators.add(new FormulaDecorator(metric, decoratorsByGeneratedMetric.get(metric)));
045          }
046        }
047    
048        return dictionnary.sort(decorators);
049      }
050    
051      private SetMultimap<Metric, Decorator> getDecoratorsByMetric(Collection<Decorator> pluginDecorators) {
052        SetMultimap<Metric, Decorator> decoratorsByGeneratedMetric = HashMultimap.create();
053        for (Decorator decorator : pluginDecorators) {
054          List dependents = dictionnary.getDependents(decorator);
055          for (Object dependent : dependents) {
056            if (dependent instanceof Metric) {
057              decoratorsByGeneratedMetric.put((Metric) dependent, decorator);
058            }
059          }
060        }
061        return decoratorsByGeneratedMetric;
062      }
063    }