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

On Wed, Jul 9, 2014 at 5:11 PM, Burr Sutter <bsutter(a)redhat.com&gt; wrote: > > On Jul 9, 2014, at 11:03 AM, Matthias Wessendorf <matzew(a)apache.org&gt; > wrote: > > Hi, > > we had a meeting on this 'server side' sync topic. In terms of delivering > a 'quick solution' around JavaEE (JAX-RS/JPA): > > Erik's sent a PR to forge (see [1]) and Erik started a branch on adding > the minimal/quick solution to our Quickstarts (atm: Cordova and Server): > https://github.com/edewit/aerogear-push-quickstarts/tree/conflict > > ==> It basically is "optimistic locking" and returning 409 to the client, > telling there is a conflict; NOTE: there is NO merge. > > What we could do.... > > in what timeframe? :-) > I think I mentioned that a bit later in my email, at the bottom > > * Provide an annotation for all of that work (outside of the quickstart, > as a "library"); > > that could be interesting, but how much boilderplate code is it > eliminating? 10 lines? > Possible - just an idea we had at the Face2Face meeting. To make it darn simple > > * we could also integrate the push notification delivery on conflicts > (not sure it really makes sense, for now...). > > Seems like overkill to me > yeah, same feeing; No Push on Conflict it is, for now

> > > Note that this is just an initial and very simple solution, not really > something considered being called a 'sync server'. I liked Summers comment: > "I think the EE stuff is a stop gap until the sync server is done IE the > cheap 50% solution". I agree with that; Eventually it will go away in fav. > of the 'sync-server' that Dan/Luke are working on. > > > > OK, in terms of timing,... we could include Erik's work (see [2]) into > our 1.0.0 release (of the quickstarts). > > And try to get the Forge JAX-RS generation updated > https://issues.jboss.org/browse/FORGE-1916 > > Just provide the template code - the Forge team will do the rest. > > That means we would need to bring the Cordova behavior to iOS and Android > (Summers has a POC that does similar bits around @Version Entities and > Optimistic Locking (and returning 409), see [3]). > > Is this an update to just the quickstarts or to some framework/library > code? > to the quickstarts; see https://github.com/edewit/aerogear-push-quickstarts/tree/conflict > > Or we do that after we released the AeroGear Mobile Push 1.0.0 to the > community; So it could be bundled with an 1.0.1 in... let's say September. > > > About the long-term solution: > > Dan and Luke will continue their research > --> Server side POC > https://github.com/danbev/aerogear-sync-server/tree/differential-synchron... > --> Client side POC https://github.com/lholmquist/ag-js-ds-poc > > We will be also reaching out to other groups, as we are not the only ones > interested in 'sync' > > Any thoughts or questions ? > -Matthias > > > [1] https://github.com/forge/core/pull/481 > [2] https://github.com/edewit/aerogear-push-quickstarts/tree/conflict > [3] Summers POC: > * https://github.com/secondsun/SmogRideAndroid (client) > * https://github.com/secondsun/SmogRide (Server) > > > > On Fri, Jul 4, 2014 at 9:46 AM, Erik Jan de Wit <edewit(a)redhat.com&gt; > wrote: > >> >> On 4 Jul,2014, at 9:28 , Matthias Wessendorf <matzew(a)apache.org&gt; wrote: >> >> >> 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 ? >> >> >> Added handling of OptimisticLockException to forge >> https://github.com/forge/core/pull/481 this will give clients a 409 so >> that they could show to the user that their copy was out of date. Now the >> client still need to react to this. >> >> - Client library will have helper methods for managing data >> >> >> POC of client handeling this >> https://github.com/edewit/aerogear-push-quickstarts/tree/conflict/client/... this >> will just show the client version and the server version and the user can >> choose which version to take >> >> - Use push to send notifications that data changed? >> - JAX-RS Annotation to send notifications? >> >> >> >> _______________________________________________ >> aerogear-dev mailing list >> aerogear-dev(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/aerogear-dev >> > > > > -- > Matthias Wessendorf > > blog: http://matthiaswessendorf.wordpress.com/ > sessions: http://www.slideshare.net/mwessendorf > twitter: http://twitter.com/mwessendorf > _______________________________________________ > aerogear-dev mailing list > aerogear-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/aerogear-dev > > > > _______________________________________________ > aerogear-dev mailing list > aerogear-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/aerogear-dev > -- Matthias Wessendorf blog: http://matthiaswessendorf.wordpress.com/ sessions: http://www.slideshare.net/mwessendorf twitter: http://twitter.com/mwessendorf _______________________________________________ aerogear-dev mailing list aerogear-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/aerogear-dev