001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2009 SonarSource SA
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.api.rules;
021    
022    import org.apache.commons.configuration.Configuration;
023    import org.slf4j.LoggerFactory;
024    import org.sonar.api.CoreProperties;
025    import org.sonar.api.utils.KeyValue;
026    import org.sonar.api.utils.KeyValueFormat;
027    
028    import java.util.Map;
029    
030    public final class RuleUtils {
031    
032      private RuleUtils() {
033      }
034    
035      /**
036       * Default value is used when the property is not set (see property key and default value in the class CoreProperties).
037       */
038      public static Map<RulePriority, Integer> getPriorityWeights(final Configuration configuration) {
039        String levelWeight = configuration.getString(CoreProperties.CORE_RULE_WEIGHTS_PROPERTY, CoreProperties.CORE_RULE_WEIGHTS_DEFAULT_VALUE);
040    
041        Map<RulePriority, Integer> weights = KeyValueFormat.parse(levelWeight, new KeyValueFormat.Transformer<RulePriority, Integer>() {
042          public KeyValue<RulePriority, Integer> transform(String key, String value) {
043            try {
044              return new KeyValue<RulePriority, Integer>(RulePriority.valueOf(key.toUpperCase()), Integer.parseInt(value));
045            } catch (Exception e) {
046              LoggerFactory.getLogger(RuleUtils.class).warn("Property " + CoreProperties.CORE_RULE_WEIGHTS_PROPERTY + " has invalid value: " + value, e);
047              return null;
048            }
049          }
050        });
051    
052        for (RulePriority priority : RulePriority.values()) {
053          if (!weights.containsKey(priority)) {
054            weights.put(priority, 1);
055          }
056        }
057        return weights;
058      }
059    }