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.core.metric;
021    
022    import com.google.common.collect.Lists;
023    import com.google.common.collect.Maps;
024    import org.sonar.api.measures.Metric;
025    import org.sonar.jpa.session.DatabaseSessionFactory;
026    
027    import java.util.Collection;
028    import java.util.List;
029    import java.util.Map;
030    
031    public final class CacheMetricFinder extends DefaultMetricFinder {
032    
033      private Map<String, Metric> metricsByKey = Maps.newLinkedHashMap();
034      private Map<Integer, Metric> metricsById = Maps.newLinkedHashMap();
035    
036      public CacheMetricFinder(DatabaseSessionFactory sessionFactory) {
037        super(sessionFactory);
038      }
039    
040      public void start() {
041        Collection<Metric> metrics = doFindAll();
042        for (Metric metric : metrics) {
043          metricsByKey.put(metric.getKey(), metric);
044          metricsById.put(metric.getId(), metric);
045        }
046      }
047    
048      @Override
049      public Metric findById(int metricId) {
050        return metricsById.get(metricId);
051      }
052    
053      @Override
054      public Metric findByKey(String key) {
055        return metricsByKey.get(key);
056      }
057    
058      @Override
059      public Collection<Metric> findAll(List<String> metricKeys) {
060        List<Metric> result = Lists.newLinkedList();
061        for (String metricKey : metricKeys) {
062          Metric metric = findByKey(metricKey);
063          if (metric != null) {
064            result.add(metric);
065          }
066        }
067        return result;
068      }
069    
070      @Override
071      public Collection<Metric> findAll() {
072        return metricsByKey.values();
073      }
074    }