001    /*
002     * SonarQube, open source software quality management tool.
003     * Copyright (C) 2008-2014 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * SonarQube 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     * SonarQube 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 License
017     * along with this program; if not, write to the Free Software Foundation,
018     * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
019     */
020    package org.sonar.api.batch.rule.internal;
021    
022    import com.google.common.collect.Maps;
023    import org.sonar.api.batch.rule.ActiveRules;
024    import org.sonar.api.rule.RuleKey;
025    
026    import java.util.Map;
027    
028    /**
029     * Builds instances of {@link org.sonar.api.batch.rule.ActiveRules}.
030     * <b>For unit testing and internal use only</b>.
031     *
032     * @since 4.2
033     */
034    public class ActiveRulesBuilder {
035    
036      private final Map<RuleKey, NewActiveRule> map = Maps.newHashMap();
037    
038      public NewActiveRule activate(RuleKey ruleKey) {
039        if (map.containsKey(ruleKey)) {
040          throw new IllegalStateException(String.format("Rule '%s' is already activated", ruleKey));
041        }
042        NewActiveRule newActiveRule = new NewActiveRule(ruleKey);
043        map.put(ruleKey, newActiveRule);
044        return newActiveRule;
045      }
046    
047      public ActiveRules build() {
048        return new DefaultActiveRules(map.values());
049      }
050    }