| /* |
| * 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.directmemory.lightning.internal.instantiator.sun; |
| |
| import java.io.NotSerializableException; |
| import java.lang.reflect.Constructor; |
| |
| import org.apache.directmemory.lightning.instantiator.ObjectInstantiator; |
| import org.apache.directmemory.lightning.internal.instantiator.ObjenesisException; |
| import org.apache.directmemory.lightning.internal.instantiator.SerializationInstantiatorHelper; |
| |
| import sun.reflect.ReflectionFactory; |
| |
| /** |
| * Instantiates an object using internal sun.reflect.ReflectionFactory - a class only available on JDK's that use Sun's |
| * 1.4 (or later) Java implementation. This instantiator will create classes in a way compatible with serialization, |
| * calling the first non-serializable superclass' no-arg constructor. This is the best way to instantiate an object |
| * without any side effects caused by the constructor - however it is not available on every platform. |
| * |
| * @author Leonardo Mesquita |
| * @see ObjectInstantiator |
| */ |
| @SuppressWarnings( "restriction" ) |
| public class SunReflectionFactorySerializationInstantiator |
| implements ObjectInstantiator |
| { |
| |
| private final Constructor<?> mungedConstructor; |
| |
| public SunReflectionFactorySerializationInstantiator( Class<?> type ) |
| { |
| |
| Class<?> nonSerializableAncestor = SerializationInstantiatorHelper.getNonSerializableSuperClass( type ); |
| ReflectionFactory reflectionFactory = ReflectionFactory.getReflectionFactory(); |
| Constructor<?> nonSerializableAncestorConstructor; |
| try |
| { |
| nonSerializableAncestorConstructor = nonSerializableAncestor.getConstructor( (Class[]) null ); |
| } |
| catch ( NoSuchMethodException e ) |
| { |
| /** |
| * @todo (Henri) I think we should throw a NotSerializableException just to put the same message a |
| * ObjectInputStream. Otherwise, the user won't know if the null returned if a "Not serializable", a |
| * "No default constructor on ancestor" or a "Exception in constructor" |
| */ |
| throw new ObjenesisException( new NotSerializableException( type |
| + " has no suitable superclass constructor" ) ); |
| } |
| |
| mungedConstructor = reflectionFactory.newConstructorForSerialization( type, nonSerializableAncestorConstructor ); |
| mungedConstructor.setAccessible( true ); |
| } |
| |
| @Override |
| public Object newInstance() |
| { |
| try |
| { |
| return mungedConstructor.newInstance( (Object[]) null ); |
| } |
| catch ( Exception e ) |
| { |
| throw new ObjenesisException( e ); |
| } |
| } |
| } |