001 /**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one or more
004 * contributor license agreements. See the NOTICE file distributed with
005 * this work for additional information regarding copyright ownership.
006 * The ASF licenses this file to You under the Apache License, Version 2.0
007 * (the "License"); you may not use this file except in compliance with
008 * the License. You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018 package org.apache.camel.spring.xml;
019
020 import org.springframework.beans.SimpleTypeConverter;
021 import org.springframework.beans.factory.BeanFactory;
022 import org.springframework.beans.factory.config.RuntimeBeanReference;
023
024 import java.lang.reflect.InvocationTargetException;
025 import java.util.HashMap;
026 import java.util.List;
027 import java.util.Map;
028
029 public class BuilderAction {
030 private final MethodInfo methodInfo;
031 private final HashMap<String, Object> parameterValues;
032
033 public BuilderAction(MethodInfo methodInfo, HashMap<String, Object> parameterValues) {
034 this.methodInfo = methodInfo;
035 this.parameterValues = parameterValues;
036 }
037
038 public Object invoke(BeanFactory beanFactory, Object rootBuilder, Object contextBuilder) {
039 SimpleTypeConverter converter = new SimpleTypeConverter();
040 Object args[] = new Object[methodInfo.parameters.size()];
041 int pos = 0;
042 for (Map.Entry<String, Class> entry : methodInfo.parameters.entrySet()) {
043 String paramName = entry.getKey();
044 Class paramClass = entry.getValue();
045 Object value = parameterValues.get(paramName);
046 if (value != null) {
047 value = replaceBeanReferences(beanFactory, rootBuilder, value);
048 args[pos] = converter.convertIfNecessary(value, paramClass);
049 }
050 }
051
052 try {
053 return methodInfo.method.invoke(contextBuilder, args);
054 }
055 catch (InvocationTargetException e) {
056 throw new IllegalArgumentException(e.getCause());
057 }
058 catch (RuntimeException e) {
059 throw e;
060 }
061 catch (Throwable e) {
062 throw new IllegalArgumentException(e);
063 }
064 }
065
066 protected Object replaceBeanReferences(BeanFactory beanFactory, Object rootBuilder, Object value) {
067 // TODO why not using instanceof??
068 if (value.getClass() == RuntimeBeanReference.class) {
069 String beanName = ((RuntimeBeanReference) value).getBeanName();
070 value = beanFactory.getBean(beanName);
071 }
072 if (value.getClass() == BuilderStatement.class) {
073 BuilderStatement bs = (BuilderStatement) value;
074 value = bs.create(beanFactory, rootBuilder);
075 }
076 if (value instanceof List) {
077 List list = (List) value;
078 for (int i = 0, size = list.size(); i < size; i++) {
079 list.set(i, replaceBeanReferences(beanFactory, rootBuilder, list.get(i)));
080 }
081 }
082 return value;
083 }
084
085 public String getName() {
086 return methodInfo.getName();
087 }
088
089 public MethodInfo getMethodInfo() {
090 return methodInfo;
091 }
092 }