Recommended approach with Smart GWT EE for calling other servlets from the client

[adrianff]

I'm currently evaluating Smart GWT EE and I had a few questions.

Using the Smart GWT EE what would your recommended approach be for passing a com.smartgwt.client.data.Record from the client to a Servlet and then quering some additional records on the server side for generating a PDF be?

eg. on a button click in a ListGrid I want to generate a PDF on the server and then return the URL for the PDF to the client

On the client side should I be passing the Record using a RPCRequest or is there a better method?

On the server side should I be querying additional records using this method?
http://www.smartclient.com/smartgwtee/javadoc/com/smartgwt/client/docs/StandaloneDataSourceUsage.html

[Isomorphic]

See the QuickStart Guide sections on DMI, it discusses doing additional DataSource operations inside of a DMI.

You should set operationType:"custom" for the PDF export and call it via DataSource.performCustomOperation(). Use RPCManager.doCustomResponse() to suppress the normal response so you can directly write to the servlet outputStream. Client-side, set dsRequest.downloadResult (inherited from rpcRequest) to indicate that you expect the result to be a download.