Keeping iPhone application in sync with GWT application

Question

I'm working on an iPhone application that should work in offline and online modes.
In it's online mode it's supposed to feed all the information the user enters to a webservice backed by GWT/GAE. In it's offline mode it's supposed to store the information locally, and when connection is available sync it up to the web service.

Currently my plan is as follows:

1. Provide a connection between an app and a webservice using Protobuffers for efficient over-the-wire communication
2. Work with local DB using Core Data
3. Poll the network status, and when available sync the database and keep some sort of local-db-to-remote-db key synchronization.

The question is - am I in the right direction? Are the standard patterns for implementing this? Maybe someone can point me to an open-source application that works in a similar fashion?

I am really new to iPhone coding, and would be very glad to hear any suggestions.

Thanks

Answer 1

I think you've blurring the questions together.

• If you've got a question about making a GWT web interface, that's one question.
• Questions about how to sync an iPhone to a web service are a different question. For that, you don't want to use GWT's RPCs for syncing, as you'd have to fake out the 'browser-side' of the serialization system in your iPhone code, which GWT normally provides for you.