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;
021
022import com.google.common.collect.HashMultimap;
023import com.google.common.collect.SetMultimap;
024import org.sonar.api.batch.BatchExtensionDictionnary;
025import org.sonar.api.batch.Decorator;
026import org.sonar.api.measures.Metric;
027import org.sonar.api.resources.Project;
028
029import java.util.*;
030
031public 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}