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 */
020package org.sonar.api.rules;
021
022import org.apache.commons.lang.StringUtils;
023import org.sonar.api.utils.AnnotationUtils;
024
025/**
026 * @since 2.3
027 */
028public final class RuleAnnotationUtils {
029
030  private RuleAnnotationUtils() {
031    // only static methods
032  }
033
034  public static String getRuleKey(Class annotatedClass) {
035    String key = null;
036    org.sonar.check.Rule ruleAnnotation = AnnotationUtils.getAnnotation(annotatedClass, org.sonar.check.Rule.class);
037    if (ruleAnnotation != null) {
038      key = ruleAnnotation.key();
039    }
040    return StringUtils.defaultIfEmpty(key, annotatedClass.getCanonicalName());
041  }
042}