Trying to give you more info on this.
- the error appears sometimes, it causes groovytweets.org fail every
other request or so
- retweets is a Collection of Entity Retweet, part of the Tweet Entity
- worked fine before 1.2.5
- I never detached anything... if I need to, can someone provide an
example? I did not find a lot searching jpa detaching. There only
seems tobe EntityManager.clear() - which detaches everything. Will
this work?
Here the mapping:
Tweet.groovy
@OneToMany(mappedBy="tweet")
List<ReTweet> retweets
ReTweet.groovy
@ManyToOne
Tweet tweet
The code that causes the exception is view code. In a controller, I
get a couple of tweet instances and then pass them on to the view for
rendering:
1 <g:each in="${tweets}" status="i" var="tweet">
...
23 retweeted by ${tweet.prettyRetweets}
...
26 </g:each
getPrettyRetweets is part of the Tweet Class, here is the
implmenentation:
134 def getPrettyRetweets()
135 {
136 if (retweets)
137 return retweets.collect{"@${it.userScreenName}"}.join
(', ')
138 else
139 return 'n/a'
140 }
It will create a long string like @hansamann,@graemerocher and simply
pass that back which will then end up in the view.
Anything wrong with that? Any help appreciated, this is going on since
a few days now....
Cheers
Sven
On Sep 11, 9:42 am, Max Ross <maxr+appeng...@google.com> wrote:
> Yes, please provide more information if you can. There was a bug fix in
> 1.2.5 that made queries respect fetch groups, but JPA doesn't have fetch
> groups so the error you're reporting suggests that something is wrong here.
> Can you boil it down to a small snippet that reproduces the problem?
>
> Thanks,
> Max
>
> On Wed, Sep 9, 2009 at 10:34 PM, datanucleus <andy_jeffer...@yahoo.com>wrote:
>
>
>
> > > I am using JPA btw, so.... can someone tell me if I need to do in
> > > order make this work again? Why does it work sometimes?
>
> > Why not look in the log ? It tells you what is detached, when, and
> > why. If a field (and who knows what type this field is ...) is not
> > detached then you can't access it.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Google App Engine for Java" group.
To post to this group, send email to google-appengine-java@googlegroups.com
To unsubscribe from this group, send email to
google-appengine-java+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/google-appengine-java?hl=en
-~----------~----~----~----~------~----~------~--~---
