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.utils; 021 022 import java.lang.annotation.Annotation; 023 024 /** 025 * A utility class for annotations 026 * 027 * @since 1.11 028 */ 029 public final class AnnotationUtils { 030 031 private AnnotationUtils() { 032 } 033 034 /** 035 * Searches for a class annotation. All inheritance tree is analysed. 036 */ 037 public static <A> A getClassAnnotation(final Object object, final Class<A> annotationClass) { 038 Class aClass = (object instanceof Class ? (Class)object : object.getClass()); 039 while (aClass != null) { 040 Annotation annotation = aClass.getAnnotation(annotationClass); 041 if (annotation != null) { 042 return (A) annotation; 043 } 044 aClass = aClass.getSuperclass(); 045 } 046 return null; 047 } 048 }