com.fitbur.mockito.objenesis.instantiator.perc.PercSerializationInstantiator Maven / Gradle / Ivy
/**
* 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 com.fitbur.mockito.objenesis.instantiator.perc;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import com.fitbur.mockito.objenesis.ObjenesisException;
import com.fitbur.mockito.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.
*
* Based on code provided by Aonix but doesn't work right now
*
* @author Henri Tremblay
* @see com.fitbur.mockito.objenesis.instantiator.ObjectInstantiator
*/
public class PercSerializationInstantiator implements ObjectInstantiator {
private Object[] typeArgs;
private final Method newInstanceMethod;
public PercSerializationInstantiator(Class type) {
// Find the first unserializable parent class
Class 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, "()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);
}
}
}