| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.tuscany.sca.implementation.spring.elements.tie; |
| |
| import java.lang.reflect.Field; |
| import java.lang.reflect.ParameterizedType; |
| import java.lang.reflect.Type; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| |
| /** |
| * A hacking utility to copy beans field by field between two class loaders |
| */ |
| public class SpringElementTie { |
| public static <T> T copy(Object source, Class<T> cls, Type genericType) { |
| if (source == null) { |
| return null; |
| } |
| if (cls.isPrimitive()) { |
| return (T)source; |
| } |
| if (Collection.class.isAssignableFrom(cls)) { |
| ParameterizedType pType = (ParameterizedType)genericType; |
| Type itemType = pType.getActualTypeArguments()[0]; |
| Collection col = (Collection)source; |
| List target = new ArrayList(); |
| for (Object item : col) { |
| target.add(copy(item, (Class<?>)itemType, itemType)); |
| } |
| return (T)target; |
| } |
| if (cls.isInstance(source)) { |
| return cls.cast(source); |
| } |
| try { |
| Class<?> sourceClass = source.getClass(); |
| T target = cls.newInstance(); |
| for (Field sourceField : sourceClass.getDeclaredFields()) { |
| sourceField.setAccessible(true); |
| Field targetField = cls.getDeclaredField(sourceField.getName()); |
| targetField.setAccessible(true); |
| Object sourceFieldValue = sourceField.get(source); |
| Object targetFieldValue = copy(sourceFieldValue, targetField.getType(), targetField.getGenericType()); |
| targetField.set(target, targetFieldValue); |
| } |
| return target; |
| } catch (Throwable e) { |
| throw new IllegalArgumentException(e); |
| } |
| } |
| |
| } |