Use a dto if you're that worried about it
On Apr 15, 2011 2:55 PM, "david ruescas" <[email protected]> wrote:
> YK and Chris
>
> Thanks for your replies. I already have the cayenne filter installed, and
> the datacontext is accessible via
>
> BaseContext.getThreadObjectContext();
>
> but this is not the problem. The problem is that cayenne objects
referenced
> from models sometimes (eg when browsing to versioned pages) end up in a
> hollow state, probably due to deserialization. It is similar to the
problem
> discussed here
>
> http://comments.gmane.org/gmane.comp.java.cayenne.user/12017
>
> I solved the problem with models using loadable detachable models, but I
am
> fearing the same problem may show up with cayenne objects that are stored
in
> my session (i am using my own session class with references to cayenne
> objects, installed with getWebSessionClass())
>
> Thanks,
>
> David
>
> On Fri, Apr 15, 2011 at 8:41 PM, Christian Grobmeier <[email protected]
>wrote:
>
>> Hi,
>> i have solved it like this:
>>
>>
http://www.grobmeier.de/using-apache-cayenne-with-apache-wicket-05022011.html
>> Cheers
>> Christian
>>
>> On Fri, Apr 15, 2011 at 8:20 PM, YK <[email protected]> wrote:
>> >>the datacontext was lost
>> >
>> > I think this is the root cause of your problems.
>> >
>> > A cayenne dataContext is generally created once for all for each web
>> session
>> > where it is stored.
>> > You should have a
http://cayenne.apache.org/doc30/tutorial-webapp.htmlweb
>> > filter that stores this dataContext in the ThreadLocal context in order
>> to
>> > use it
>> > in the persistence layer of your application like the following :
>> > ObjectContext context = BaseContext.getThreadObjectContext();
>> > List artists = context.performQuery(query);
>> >
>> > Make sure you are not loosing the dataContext after each request.
>> >
>> > take a look at http://cayenne.apache.org/doc30/tutorial-webapp.htmlthis
>> > link for more information
>> >
>> >
>> > --
>> > View this message in context:
>>
http://apache-wicket.1842946.n4.nabble.com/Wicket-Sessions-serialization-and-Cayenne-tp3452466p3452694.html
>> > Sent from the Users forum mailing list archive at Nabble.com.
>> >
>> > ---------------------------------------------------------------------
>> > To unsubscribe, e-mail: [email protected]
>> > For additional commands, e-mail: [email protected]
>> >
>> >
>>
>>
>>
>> --
>> http://www.grobmeier.de
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: [email protected]
>> For additional commands, e-mail: [email protected]
>>
>>
