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 org.sonar.api.batch.rule.Rules;
023    import org.sonar.api.rule.RuleKey;
024    
025    import java.util.HashMap;
026    import java.util.Map;
027    
028    /**
029     * For unit testing and internal use only.
030     *
031     * @since 4.2
032     */
033    
034    public class RulesBuilder {
035    
036      private final Map<RuleKey, NewRule> map = new HashMap<RuleKey, NewRule>();
037    
038      public NewRule add(RuleKey key) {
039        if (map.containsKey(key)) {
040          throw new IllegalStateException(String.format("Rule '%s' already exists", key));
041        }
042        NewRule newRule = new NewRule(key);
043        map.put(key, newRule);
044        return newRule;
045      }
046    
047      public Rules build() {
048        return new DefaultRules(map.values());
049      }
050    }