| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.i18n.server.impl; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.annotation.Inherited; |
| import java.util.Arrays; |
| import java.util.LinkedList; |
| |
| /** |
| * Reflection-oriented utilities for implementing the Message/etc API. |
| */ |
| public class ReflectionUtils { |
| |
| public static <A extends Annotation> A getAnnotation(Class<?> clazz, |
| Class<A> annotClass, boolean forceInherit) { |
| boolean inherited = forceInherit |
| || annotClass.isAnnotationPresent(Inherited.class); |
| LinkedList<Class<?>> workQueue = new LinkedList<Class<?>>(); |
| workQueue.add(clazz); |
| while (!workQueue.isEmpty()) { |
| clazz = workQueue.removeFirst(); |
| A result = clazz.getAnnotation(annotClass); |
| if (result != null || !inherited) { |
| return result; |
| } |
| Class<?> superClass = clazz.getSuperclass(); |
| if (superClass != null) { |
| workQueue.addLast(superClass); |
| } |
| workQueue.addAll(Arrays.asList((Class<?>[]) clazz.getInterfaces())); |
| } |
| return null; |
| } |
| } |