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JPPF, the open source grid computing solution
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/*
 * JPPF.
 * Copyright (C) 2005-2015 JPPF Team.
 * http://www.jppf.org
 *
 * 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.jppf.client.taskwrapper;

import static org.jppf.client.taskwrapper.TaskObjectWrapper.MethodType.*;

import java.lang.reflect.*;
import java.security.AccessController;

import org.jppf.utils.ReflectionUtils;

/**
 * Task wrapper for POJO classes.
 * @author Laurent Cohen
 * @exclude
 */
public class PojoTaskWrapper extends AbstractTaskObjectWrapper
{
  /**
   * Explicit serialVersionUID.
   */
  private static final long serialVersionUID = 1L;
  /**
   * The runnable object to execute.
   */
  private Object taskObject = null;
  /**
   * The name of the method to execute on the task object.
   * Can be any method, including static method and constructor.
   */
  private String method = null;
  /**
   * The arguments of the method to execute.
   */
  private Object[] args = null;
  /**
   * The name of the object's class if the method is static or a constructor.
   */
  private String className = null;

  /**
   * Initialize this wrapper with the specified Runnable object.
   * @param method the name of the method to execute on the task object.
   * @param taskObject the runnable object to execute.
   * @param args the arguments of the method to execute.
   */
  public PojoTaskWrapper(final String method, final Object taskObject, final Object...args)
  {
    this.method = method;
    if (taskObject instanceof Class)
    {
      Class clazz = (Class) taskObject;
      if (method.equals(clazz.getSimpleName())) methodType = CONSTRUCTOR;
      else methodType = STATIC;
      this.className = clazz.getName();
    }
    else
    {
      this.taskObject = taskObject;
      methodType = INSTANCE;
    }
    this.args = args;
  }

  /**
   * Execute the run method of this runnable task.
   * @return the result of the execution.
   * @throws Exception if an error occurs during the execution.
   * @see org.jppf.client.taskwrapper.TaskObjectWrapper#execute()
   */
  @Override
  public Object execute() throws Exception
  {
    Class clazz = INSTANCE.equals(methodType) ? taskObject.getClass() : Class.forName(className);
    Object result = null;
    AbstractPrivilegedAction