Hello.
Cayenne[1] ROP[2] (Remote Object Persistence) is sort of equivalent
to WO/EOF Java Client.
We have also started developing a Cocoa framework[3] that let users
create Cocoa applications in Objective-C that connects to a server
with Cayenne using Cayenne ROP. Along with the framework is also a
sample client application. See screenshot[4].
Most of the basic stuff are working. Cocoa bindings are working.
Relationship handling with automatic setting of reverse relationships
the Cayenne way are working. Deleting, Named Queries, Committing and
Faulting are working. CocoaCayenne also has a custom
NSArrayController that makes life a lot easier.
The network communication in Cayenne ROP are pluggable, but the
default implementation uses hessian[5]. CocoaCayenne uses HessianObjC
[6].
Things to do:
* Better field validation. Like max string length and better error
messages.
* Authentication. Currently username and password are stored in the
hessian service url.
* Support for ROP distributed events. Cayenne ROP uses XMPP to
distribute events between clients.
* Core Data. CocoaCayenne are working with bindings and
controllers, but full Core Data support would be cool. I do not know
if this is possible or even needed..
Regards,
- Tore.
[1] http://incubator.apache.org/cayenne/
[2] http://cwiki.apache.org/CAYDOC/remote-object-persistence-
introduction.html
[3] http://cwiki.apache.org/CAY/cocoa-cayenne.html
[4] http://www.pvv.ntnu.no/~halset/tmp/cocoa-client-20060925.png
[5] http://www.caucho.com/hessian/
[6] http://bluebearstudio.com/hessianobjc/
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