/** | |
* Copyright 2006-2016 the original author or authors. | |
* | |
* 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 org.objenesis.instantiator.perc; | |
import java.io.ObjectInputStream; | |
import java.io.Serializable; | |
import java.lang.reflect.InvocationTargetException; | |
import java.lang.reflect.Method; | |
import org.objenesis.ObjenesisException; | |
import org.objenesis.instantiator.ObjectInstantiator; | |
/** | |
* Instantiates a class by making a call to internal Perc private methods. It is only supposed to | |
* work on Perc JVMs. This instantiator will create classes in a way compatible with serialization, | |
* calling the first non-serializable superclass' no-arg constructor. | |
* <p> | |
* Based on code provided by Aonix but <b>doesn't work right now</b> | |
* | |
* @author Henri Tremblay | |
* @see org.objenesis.instantiator.ObjectInstantiator | |
*/ | |
public class PercSerializationInstantiator<T> implements ObjectInstantiator<T> { | |
private Object[] typeArgs; | |
private final Method newInstanceMethod; | |
public PercSerializationInstantiator(Class<T> type) { | |
// Find the first unserializable parent class | |
Class<? super T> unserializableType = type; | |
while(Serializable.class.isAssignableFrom(unserializableType)) { | |
unserializableType = unserializableType.getSuperclass(); | |
} | |
try { | |
// Get the special Perc method to call | |
Class<?> percMethodClass = Class.forName("COM.newmonics.PercClassLoader.Method"); | |
newInstanceMethod = ObjectInputStream.class.getDeclaredMethod("noArgConstruct", | |
new Class[] {Class.class, Object.class, percMethodClass}); | |
newInstanceMethod.setAccessible(true); | |
// Create invoke params | |
Class<?> percClassClass = Class.forName("COM.newmonics.PercClassLoader.PercClass"); | |
Method getPercClassMethod = percClassClass.getDeclaredMethod("getPercClass", Class.class); | |
Object someObject = getPercClassMethod.invoke(null, unserializableType); | |
Method findMethodMethod = someObject.getClass().getDeclaredMethod("findMethod", | |
new Class[] {String.class}); | |
Object percMethod = findMethodMethod.invoke(someObject, "<init>()V"); | |
typeArgs = new Object[] {unserializableType, type, percMethod}; | |
} | |
catch(ClassNotFoundException e) { | |
throw new ObjenesisException(e); | |
} | |
catch(NoSuchMethodException e) { | |
throw new ObjenesisException(e); | |
} | |
catch(InvocationTargetException e) { | |
throw new ObjenesisException(e); | |
} | |
catch(IllegalAccessException e) { | |
throw new ObjenesisException(e); | |
} | |
} | |
@SuppressWarnings("unchecked") | |
public T newInstance() { | |
try { | |
return (T) newInstanceMethod.invoke(null, typeArgs); | |
} | |
catch(IllegalAccessException e) { | |
throw new ObjenesisException(e); | |
} | |
catch(InvocationTargetException e) { | |
throw new ObjenesisException(e); | |
} | |
} | |
} |