/*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you 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.apache.onami.factoryannotation;

 import java.security.AccessController;

 import java.security.PrivilegedAction;

 class PrivilegedHelper<T>

     implements PrivilegedAction<T>

 {

     private final Class<T> clazz;

     private final PrivilegedHelperCallback<T> callback;

     public PrivilegedHelper( final Class<T> clazz, final PrivilegedHelperCallback<T> callback )

     {

         this.clazz = clazz;

         this.callback = callback;

     }

     public T run()

     {

         return callback.execute( clazz );

     }

     public static final <T> T executePrivileged( final Class<T> clazz, final PrivilegedHelperCallback<T> callback )

     {

         return AccessController.doPrivileged( new PrivilegedHelper<T>( clazz, callback ) );

     }

     static interface PrivilegedHelperCallback<T>

     {

         T execute( Class<T> clazz );

     }

 }