001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2011 SonarSource 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 /** 023 * A utility class for annotations 024 * 025 * @since 1.11 026 */ 027 public final class AnnotationUtils { 028 029 private AnnotationUtils() { 030 } 031 032 /** 033 * Searches for a class annotation. All inheritance tree is analysed. 034 */ 035 public static <A> A getClassAnnotation(final Object object, final Class<A> annotationClass) { 036 Class initialClass = (object instanceof Class ? (Class) object : object.getClass()); 037 A result = null; 038 Class aClass=initialClass; 039 while (aClass != null && result == null) { 040 result = (A)aClass.getAnnotation(annotationClass); 041 aClass = aClass.getSuperclass(); 042 } 043 044 if (result==null) { 045 Class[] interfaces = initialClass.getInterfaces(); 046 for (Class anInterface : interfaces) { 047 result = (A)anInterface.getAnnotation(annotationClass); 048 if (result!=null) { 049 break; 050 } 051 } 052 } 053 return result; 054 } 055 }