001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.camel.spring.util; 018 019 import java.lang.annotation.Annotation; 020 import java.lang.reflect.Field; 021 import java.lang.reflect.InvocationTargetException; 022 import java.lang.reflect.Method; 023 import java.lang.reflect.Modifier; 024 025 public class ReflectionUtils extends org.springframework.util.ReflectionUtils { 026 public static <T extends Annotation> void callLifecycleMethod(final Object bean, final Class<T> annotation) { 027 ReflectionUtils.doWithMethods(bean.getClass(), new ReflectionUtils.MethodCallback() { 028 public void doWith(Method method) throws IllegalArgumentException, IllegalAccessException { 029 if (method.getAnnotation(annotation) != null) { 030 try { 031 method.invoke(bean, (Object[]) null); 032 } 033 catch (IllegalArgumentException ex) { 034 throw new IllegalStateException("Failure to invoke " + method + " on " 035 + bean.getClass() + ": args=[]", ex); 036 } 037 catch (IllegalAccessException ex) { 038 throw new UnsupportedOperationException(ex.toString()); 039 } 040 catch (InvocationTargetException ex) { 041 throw new UnsupportedOperationException("PostConstruct method on bean threw exception", 042 ex.getTargetException()); 043 } 044 } 045 } 046 }); 047 } 048 049 public static void setField(Field f, Object instance, Object value) { 050 try { 051 boolean oldAccessible = f.isAccessible(); 052 boolean shouldSetAccessible = !Modifier.isPublic(f.getModifiers()) && !oldAccessible; 053 if (shouldSetAccessible) { 054 f.setAccessible(true); 055 } 056 f.set(instance, value); 057 if (shouldSetAccessible) { 058 f.setAccessible(oldAccessible); 059 } 060 } 061 catch (IllegalArgumentException ex) { 062 throw new UnsupportedOperationException("Cannot inject value of class '" 063 + value.getClass() + "' into " + f); 064 } 065 catch (IllegalAccessException ex) { 066 ReflectionUtils.handleReflectionException(ex); 067 } 068 } 069 }