Access to request parameters in DMI PRC callback

[pkelley]

I am making a DMI RPC call that looks something like this:

DMI.call("myApp", "myClass", "methodToCall", myCallback, new Object[] {param});


the execute method for myCallback I need to know the value for param that was passed in.

I know that I could return it back from the server, but I thought there may be a cleaner way to do this since i get an RPCRequest object passed in to execute.

Is there a way to do this?

Thank you in advance,
Patrick

[Isomorphic]

The typical way is to use the same pattern commonly used for event handling - if you declare the callback as an anonymous class, it can access variables from the outer scope which have been declared "final".

[pkelley]

It looks like this was exactly what I needed. Thank you!

Here is a code sample in case anyone else has to do this.

The DMI RPC call:

DMI.call("myApp", "myClass", "methodToCall", getMyCallback(param), new Object[] {param});

The callback:

private RPCCallback getMyCallback(String param)
{
   final String paramNeededInCallback = param;
   return new RPCCallback()
   {
      @Override
      public void execute(RPCCallback response, Object rawData, RPCResponse)
      {
          //Handle callback.  Now param is available to you along with rawData 
          //which holds the response from the server.
      }
   };
}