/*
* JBoss, Home of Professional Open Source
* Copyright 2009, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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.jboss.shrinkwrap.impl.base;
import java.lang.reflect.Constructor;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
SecurityActions
A set of privileged actions that are not to leak out of this package
Author: ALR Version: $Revision: $
/**
* SecurityActions
*
* A set of privileged actions that are not to leak out of this package
*
* @author <a href="mailto:andrew.rubinger@jboss.org">ALR</a>
* @version $Revision: $
*/
final class SecurityActions {
// -------------------------------------------------------------------------------||
// Constructor ------------------------------------------------------------------||
// -------------------------------------------------------------------------------||
No instantiation
/**
* No instantiation
*/
private SecurityActions() {
throw new UnsupportedOperationException("No instantiation");
}
// -------------------------------------------------------------------------------||
// Utility Methods --------------------------------------------------------------||
// -------------------------------------------------------------------------------||
static Constructor<?>[] getConstructors(final Class<?> clazz) {
return AccessController.doPrivileged(new PrivilegedAction<Constructor<?>[]>() {
public Constructor<?>[] run() {
return clazz.getConstructors();
}
});
}
Obtains the Constructor specified from the given Class and argument types
Params: - clazz –
- argumentTypes –
Throws: Returns:
/**
* Obtains the Constructor specified from the given Class and argument types
*
* @param clazz
* @param argumentTypes
* @return
* @throws NoSuchMethodException
*/
static Constructor<?> getConstructor(final Class<?> clazz, final Class<?>... argumentTypes)
throws NoSuchMethodException {
try {
return AccessController.doPrivileged(new PrivilegedExceptionAction<Constructor<?>>() {
@Override
public Constructor<?> run() throws NoSuchMethodException {
return clazz.getConstructor(argumentTypes);
}
});
}
// Unwrap
catch (final PrivilegedActionException pae) {
final Throwable t = pae.getCause();
// Rethrow
if (t instanceof NoSuchMethodException) {
throw (NoSuchMethodException) t;
} else {
// No other checked Exception thrown by Class.getConstructor
try {
throw (RuntimeException) t;
}
// Just in case we've really messed up
catch (final ClassCastException cce) {
throw new RuntimeException("Obtained unchecked Exception; this code should never be reached", t);
}
}
}
}
}