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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 java.util.concurrent.Callable;

/**
 * Task wrapper for classes implementing {@link java.util.concurrent.Callable Callable}.
 * @author Laurent Cohen
 * @exclude
 */
public class CallableTaskWrapper extends AbstractTaskObjectWrapper
{
  /**
   * Explicit serialVersionUID.
   */
  private static final long serialVersionUID = 1L;
  /**
   * The callable object to execute.
   */
  private Callable callable = null;

  /**
   * Initialize this wrapper with the specified Runnable object.
   * @param callable the callable object to execute.
   */
  public CallableTaskWrapper(final Callable callable)
  {
    this.callable = callable;
  }

  /**
   * Execute the call() method of this callable 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
  {
    return callable.call();
  }

  /**
   * Return the object on which a method or constructor is called.
   * @return an object or null if the invoked method is static.
   * @see org.jppf.client.taskwrapper.TaskObjectWrapper#getTaskObject()
   */
  @Override
  public Object getTaskObject()
  {
    return callable;
  }
}