I am having a very similar problem - NullPointerException when I call
fire() (the NPE is in AbstractRequestContext.doFire()). So I am
wondering if you have found a solution to your problem.
The code with the fire() is:
CommitmentSystemRequestFactory requestFactory =
GWT.create(CommitmentSystemRequestFactory.class);
requestFactory.commitmentRequest().countCommitments().fire(
new Receiver<Long>() {
@Override
public void onSuccess(Long response) {
Window.alert("Done!");
}
});
My CommitmentRequest class has:
@Service (Commitment.class)
public interface CommitmentRequest extends RequestContext {
Request<Long> countCommitments();
My Commitment.java class has:
public static long countCommitments() {
....
}
Some other notes...
* I have also been going through the Expenses sample app, both the
description at:
http://code.google.com/webtoolkit/doc/latest/DevGuideRequestFactory.html#proxies
and the sample code.
* I am NOT using JPA. My first learning project for GWT/GAE was with
JPA, but now I wanted to try the RequestFactory and then add
Objectify.
* I am NOT using MVP. I just don't yet have the critical mass of
brain cells necessary.
Thanks for any updates or advice...
RB
On Nov 18, 9:05 am, Nicholas <nick.sm...@gmail.com> wrote:
> Thanks, you got me on the right rack. I didn't realize that more
> information on the exceptions was available in the dev mode console of
> eclipse. My domain entity objects had some Boolean accessors which I
> had named isProperty() instead of getProperty(). I changed all of
> those, and also made the domain service methods 'static' like you
> suggested.
>
> Now the application is running, but when it fires a request for
> UserInformation, I get a null pointer exception. After debugging, it
> gets into AbstractRequestContext.doFire(receiver) method, which
> attempts to call requestFactory.getRequestTransport().send(...).
> requestFactory.getRequestTransport() returns NULL so it throws a Null
> Pointer Exception. Do I need to configure the transport somewhere? I
> didn't see anything in the documentation or the Expenses sample app.
>
> The portion of my code that is initiating this is (~ line 60)
> in:http://code.google.com/p/eatright/source/browse/trunk/EatRightApp/src...
>
> On Nov 17, 6:28 pm, Thomas Broyer <t.bro...@gmail.com> wrote:
>
>
>
>
>
>
>
> > On 17 nov, 21:06, Nicholas <nick.sm...@gmail.com> wrote:
>
> > > I am working on a small GWT app (I have used GWT in the past but it
> > > was a while ago), trying to learn the new MVP and RequestFactory. I
> > > am not sure if I am just approaching this wrong, or have some error I
> > > can't spot. When I add a call to instantiate my app's RequestFactory,
> > > it no longer runs. It gives me "Deferred Binding Failed" for my
> > > request factory.
>
> > > I went back and double-checked the domain / entity objects and I think
> > > I have the required pattern in place (implicit no-arg constructor,
> > > getId(), findEntity(id) and getVersion()).
>
> > > Some of the relevant code:
>
> > > Domain
> > > objects:http://code.google.com/p/eatright/source/browse/#svn/trunk/EatRightAp...
>
> > > EntityRequest and Proxy
> > > objects:http://code.google.com/p/eatright/source/browse/#svn/trunk/EatRightAp...
>
> > > This class instantiates the RequestFactory (line 35) and passes it to
> > > the Activity (line
> > > 41)http://code.google.com/p/eatright/source/browse/trunk/EatRightApp/src...
>
> > > This class is where I have a method utilizing the request factory. (~
> > > line
> > > 49)http://code.google.com/p/eatright/source/browse/trunk/EatRightApp/src...
>
> > >http://code.google.com/p/eatright/source/browse/trunk/EatRightApp/src...
>
> > > Any ideas?
>
> > Your "service methods" in your domain objects aren't static, but
> > aren't declared as InstanceRequest in your RequestContext.
> > (don't you have more specific errors than "deferred binding failed"?)
--
You received this message because you are subscribed to the Google Groups
"Google Web Toolkit" group.
To post to this group, send email to google-web-tool...@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
