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    
021    package org.sonar.squid.indexer;
022    
023    import org.sonar.squid.api.Query;
024    import org.sonar.squid.api.SourceCode;
025    import org.sonar.squid.measures.Metric;
026    import org.sonar.squid.measures.MetricDef;
027    
028    public class QueryByMeasure implements Query {
029    
030      private final MetricDef metric;
031      private final Operator operator;
032      private final double value;
033    
034      public enum Operator {
035        GREATER_THAN, EQUALS, GREATER_THAN_EQUALS, LESS_THAN, LESS_THAN_EQUALS
036      }
037    
038      /**
039       * @deprecated use {@link #QueryByMeasure(MetricDef, Operator, double)} instead
040       */
041      @Deprecated
042      public QueryByMeasure(Metric metric, Operator operator, double value) {
043        this((MetricDef) metric, operator, value);
044      }
045    
046      public QueryByMeasure(MetricDef metric, Operator operator, double value) {
047        this.metric = metric;
048        this.operator = operator;
049        this.value = value;
050      }
051    
052      public boolean match(SourceCode unit) {
053        switch (operator) {
054          case EQUALS:
055            return unit.getDouble(metric) == value;
056          case GREATER_THAN:
057            return unit.getDouble(metric) > value;
058          case GREATER_THAN_EQUALS:
059            return unit.getDouble(metric) >= value;
060          case LESS_THAN_EQUALS:
061            return unit.getDouble(metric) <= value;
062          case LESS_THAN:
063            return unit.getDouble(metric) < value;
064          default:
065            throw new IllegalStateException("The operator value '" + operator + "' is unknown.");
066        }
067      }
068    
069    }