package com.atlassian.sal.core.executor;
   
   /**
    * A delegating runnable that copies the thread local state into the executing thread.
    *
    * @since 2.0
    */
   class ThreadLocalDelegateRunnable implements Runnable
   {
      private final Object context;
      private final Runnable delegate;
      private final ThreadLocalContextManager manager;
      private final ClassLoader contextClassLoader;
  
      /**
       * @param manager The manager to get the context from
       * @param delegate The runnable to delegate to
       */
      ThreadLocalDelegateRunnable(ThreadLocalContextManager manager, Runnable delegate)
      {
          this.delegate = delegate;
          this.manager = manager;
          this.context = manager.getThreadLocalContext();
          this.contextClassLoader = Thread.currentThread().getContextClassLoader();
      }
  
      public void run()
      {
          ClassLoader oldContextClassLoader = Thread.currentThread().getContextClassLoader();
          try
          {
              Thread.currentThread().setContextClassLoader(contextClassLoader);
              manager.setThreadLocalContext(context);
              delegate.run();
          }
          finally
          {
              Thread.currentThread().setContextClassLoader(oldContextClassLoader);
              manager.clearThreadLocalContext();
          }
      }
  }