/**
* COPYRIGHT & LICENSE
*
* This code is Copyright (c) 2006 BEA Systems, inc. It is provided free, as-is and without any warranties for the purpose of
* inclusion in Objenesis or any other open source project with a FSF approved license, as long as this notice is not
* removed. There are no limitations on modifying or repackaging the code apart from this.
*
* BEA does not guarantee that the code works, and provides no support for it. Use at your own risk.
*
* Originally developed by Leonardo Mesquita. Copyright notice added by Henrik Ståhl, BEA JRockit Product Manager.
*
*/
package org.objenesis.instantiator.jrockit;
import java.lang.reflect.Method;
import org.objenesis.ObjenesisException;
import org.objenesis.instantiator.ObjectInstantiator;
/**
* Instantiates a class by making a call to internal JRockit private methods. It is only supposed to
* work on JRockit 1.4.2 JVMs prior to release R25.1. From release R25.1 on, JRockit supports
* sun.reflect.ReflectionFactory, making this "trick" unnecessary. This instantiator will not call
* any constructors.
*
* @author Leonardo Mesquita
* @see org.objenesis.instantiator.ObjectInstantiator
* @see org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator
*/
public class JRockitLegacyInstantiator<T> implements ObjectInstantiator<T> {
private static Method safeAllocObjectMethod = null;
private static void initialize() {
if(safeAllocObjectMethod == null) {
Class<?> memSystem;
try {
memSystem = Class.forName("jrockit.vm.MemSystem");
safeAllocObjectMethod = memSystem.getDeclaredMethod("safeAllocObject",
new Class[] {Class.class});
safeAllocObjectMethod.setAccessible(true);
}
catch(RuntimeException e) {
throw new ObjenesisException(e);
}
catch(ClassNotFoundException e) {
throw new ObjenesisException(e);
}
catch(NoSuchMethodException e) {
throw new ObjenesisException(e);
}
}
}
private final Class<T> type;
public JRockitLegacyInstantiator(Class<T> type) {
initialize();
this.type = type;
}
public T newInstance() {
try {
return type.cast(safeAllocObjectMethod.invoke(null, type));
}
catch(Exception e) {
throw new ObjenesisException(e);
}
}
}