public Object invoke(Invocation mi) throws Exception 
{
  
      // The key.
      Object key = mi.getId();
      // The lock.
      BeanLock lock ;
      boolean threadIsScheduled = false;
      boolean trace = log.isTraceEnabled();
      if( trace ) log.trace("Begin invoke, key="+key);
      lock = container.getLockManager().getLock(key);
      try 
      {
         lock.schedule(mi);
         try {
            return getNext().invoke(mi); 
         }
         finally 
         {
            // we are done with the method, decrease the count, if it reaches 0 it will wake up 
            // the next thread 
            lock.sync();
            lock.endInvocation(mi);
            lock.releaseSync(); 
         }
      }
      finally
      {
         // We are done with the lock in general
         container.getLockManager().removeLockRef(key);
         if( trace ) log.trace("End invoke, key="+key);
      }
}

 public Object invokeHome(Invocation mi) throws Exception 
{
  
      // Invoke through interceptors
      return getNext().invokeHome(mi);
}