[appengine-java] Empty LinkedList won't overwrite non-empty LinkedList in datastore ...

Hi, My Data class has a field of type LikedList. If there is only one Key in the list and if I delete it, the deleted Key will not be deleted from the datastore (after persisting the entity). I have tested all the other case, they are working fine. PS: if I set list = null, the last Key will be

[appengine-java] Re: How to ensure two entities are updated WITHOUT using transactions?

Hi, Have a look at this to understand the issues: http://blog.notdot.net/2009/9/Distributed-Transactions-on-App-Engine regards didier On Jul 10, 11:09 pm, mscwd01 wrote: > Hey > > I'm using JDO and need to update two entities both of which reside in > their own entity group. As I cannot use a

Re: [appengine-java] Re: Fast MVC Framework for GAE?

vraptor is fast, easy and RESTful ready better startup time with guice or pico instead of spring be sure to disable annotation scanning and setup your annotated components manually http://vraptor.caelum.com.br/en On Sun, Jul 10, 2011 at 3:38 AM, Max wrote: > I use Play framework with GAE modul

[appengine-java] How to ensure two entities are updated WITHOUT using transactions?

Hey I'm using JDO and need to update two entities both of which reside in their own entity group. As I cannot use a transaction, I'd like to determine how others achieve this. It is imperative that both entities are updated or none at all. Thanks -- You received this message because you are sub

[appengine-java] Re: Getting "class not found" errors on my project... any ideas why?

Hi all, I am also not very old in both Java and AppEngine. I got the same error when testing some basic app, and it seems the error was coming from an exception whose source Eclipse could not locate (hence suggesting for source attachment). When I uploaded the application to Appengine, it run we