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Posted to user@cayenne.apache.org by Gary Jarrel <ga...@gmail.com> on 2007/10/12 12:55:30 UTC
Lifecycle Callbacks!
Hi Guys!
I've just delved into using lifecycle callbacks for the first time,
and I can't seem to get my call back to fire in what seems to be a
relatively simple code:
LifecycleCallbackRegistry registry = context.getEntityResolver()
.getCallbackRegistry();
LifecycleListener listener = new AttributeChangeListener();
registry.addDefaultListener(listener);
News news = (News) DataObjectUtils.objectForPK(this.context, News.class, 1);
assertNotNull(news);
System.err.println(news);
news.setBody("test");
context.commitChanges();
System.err.println(news);
I have read over the manual chapter on call backs a few times, and
can't seem to find what I'm doing wrong - but it has been a very long
day and maybe I'm starting to gone insane!
Thank you!
Gary
Re: Lifecycle Callbacks!
Posted by Gary Jarrel <ga...@gmail.com>.
Thank you Andrus, good to know I wasn't going mad! I've come across a
post on this list which mentioned enabling callbacks and referred to
the chapter at the end of the Lifecycle Callback user guide called
"Enabling Callbacks" but when I was looking through the guide I could
not see it :)
Thanks again!
Gary
On 10/12/07, Andrus Adamchik <an...@objectstyle.org> wrote:
> Hi Gary,
>
> You are likely using 3.0M1 that requires explicit enabling of the
> listeners for the DataContext. Check out "Lifecycle Callbacks"
> chapter ("Enabling Callbacks" subchapter) of the Cayenne Guide
> included with the release for the examples.
>
> 3.0M2 that will hopefully be released soon does not require that, so
> we removed that advice from the online docs. You can also use the
> recent snapshot of 3.0 from the Maven repo:
>
> http://people.apache.org/repo/m2-snapshot-repository/org/apache/cayenne/
>
> Andrus
>
>
> On Oct 12, 2007, at 1:55 PM, Gary Jarrel wrote:
>
> > Hi Guys!
> >
> > I've just delved into using lifecycle callbacks for the first time,
> > and I can't seem to get my call back to fire in what seems to be a
> > relatively simple code:
> >
> > LifecycleCallbackRegistry registry = context.getEntityResolver()
> > .getCallbackRegistry();
> > LifecycleListener listener = new AttributeChangeListener();
> > registry.addDefaultListener(listener);
> > News news = (News) DataObjectUtils.objectForPK(this.context,
> > News.class, 1);
> > assertNotNull(news);
> > System.err.println(news);
> > news.setBody("test");
> > context.commitChanges();
> > System.err.println(news);
> >
> > I have read over the manual chapter on call backs a few times, and
> > can't seem to find what I'm doing wrong - but it has been a very long
> > day and maybe I'm starting to gone insane!
> >
> > Thank you!
> >
> > Gary
> >
>
>
Re: Lifecycle Callbacks!
Posted by Andrus Adamchik <an...@objectstyle.org>.
Hi Gary,
You are likely using 3.0M1 that requires explicit enabling of the
listeners for the DataContext. Check out "Lifecycle Callbacks"
chapter ("Enabling Callbacks" subchapter) of the Cayenne Guide
included with the release for the examples.
3.0M2 that will hopefully be released soon does not require that, so
we removed that advice from the online docs. You can also use the
recent snapshot of 3.0 from the Maven repo:
http://people.apache.org/repo/m2-snapshot-repository/org/apache/cayenne/
Andrus
On Oct 12, 2007, at 1:55 PM, Gary Jarrel wrote:
> Hi Guys!
>
> I've just delved into using lifecycle callbacks for the first time,
> and I can't seem to get my call back to fire in what seems to be a
> relatively simple code:
>
> LifecycleCallbackRegistry registry = context.getEntityResolver()
> .getCallbackRegistry();
> LifecycleListener listener = new AttributeChangeListener();
> registry.addDefaultListener(listener);
> News news = (News) DataObjectUtils.objectForPK(this.context,
> News.class, 1);
> assertNotNull(news);
> System.err.println(news);
> news.setBody("test");
> context.commitChanges();
> System.err.println(news);
>
> I have read over the manual chapter on call backs a few times, and
> can't seem to find what I'm doing wrong - but it has been a very long
> day and maybe I'm starting to gone insane!
>
> Thank you!
>
> Gary
>