[aerogear-dev] Sync - Server items (JAX-RS and JPA)

Hi, last week at our Face2Face we had a discussion about sync, moving forward on the client (will be a different thread) and on the server. For the server-side we had a few different approaches: 1) AeroGear Sync-Server: Dan and Luke worked on the sync-server ([1]) as a 'long term' solution The project contains two server implementations: - RestServer implementation that uses a simple approach of rejecting conflicts and delegating the responsibility to resolve conflicts to the client. - DiffServer Based on Google's Differential Synchonrization by Neil Fraser. This server is WebSocket based. 2) Initial quick and simple solution based on JAX-RS and JPA: - We have versioning in JPA (optimistic locking) - Use it (send 409 on server and send right data) -- Use JAX-RS ExceptionMapper for exceptions around the optimistic locking ? - Client library will have helper methods for managing data - Use push to send notifications that data changed? - JAX-RS Annotation to send notifications? I'd like to follow up on that, to see where things stand Greetings, Matthias [1] https://github.com/danbev/aerogear-sync-server/tree/differential-synchron... -- Matthias Wessendorf blog: http://matthiaswessendorf.wordpress.com/ sessions: http://www.slideshare.net/mwessendorf twitter: http://twitter.com/mwessendorf