org.jboss.marshalling.reflect.SunReflectiveCreator Maven / Gradle / Ivy
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* Copyright 2008, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.marshalling.reflect;
import java.lang.reflect.Constructor;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.io.Serializable;
import sun.reflect.ReflectionFactory;
/**
* An object creator that uses methods only found in certain JVMs to create a new constructor if needed.
*/
public class SunReflectiveCreator extends ReflectiveCreator {
private static final ReflectionFactory reflectionFactory;
static {
reflectionFactory = AccessController.doPrivileged(new PrivilegedAction() {
public ReflectionFactory run() {
return ReflectionFactory.getReflectionFactory();
}
});
}
/**
* {@inheritDoc} This implementation will attempt to create a new constructor if one is not available.
*/
protected Constructor getNewConstructor(final Class clazz) {
final Constructor constructor = super.getNewConstructor(clazz);
if (constructor != null) {
return constructor;
}
return AccessController.doPrivileged(new PrivilegedAction>() {
@SuppressWarnings({"unchecked"})
public Constructor run() {
Class current = clazz;
for (; Serializable.class.isAssignableFrom(current); current = current.getSuperclass());
final Constructor topConstructor;
try {
topConstructor = current.getDeclaredConstructor();
} catch (NoSuchMethodException e) {
return null;
}
topConstructor.setAccessible(true);
final Constructor generatedConstructor = (Constructor) reflectionFactory.newConstructorForSerialization(clazz, topConstructor);
generatedConstructor.setAccessible(true);
return generatedConstructor;
}
});
}
}