Thanks sam.
that's not cool that Annotation don't work for local variable.
I try the second version. IT works. thanks :).
But I don't really like it.
So I try the first version. Bit it is not really clear in my mind.
I create a client class :
public class Client {
private IDrawGraphService service;
@Inject
public Client(IDrawGraphService service) {
super();
this.service = service;
}
public void executeService(ISimpleGraph graph, String path) throws
IOException {
service.draw(graph, path);
}
}
but Don"t really see hos decide hos to decided is the service is a
drawTextServiceImpl or a drawDotServiceImpl
jérémie
On 19 juil, 17:39, Sam Berlin <[email protected]> wrote:
> Guice cannot detect annotations on local variables this way (although it's
> an interesting idea!). You have two options here:
>
> 1) Make the variable on the class wherever this code is in and add an extra
> module that has requestInjection(YourClass.this) in its configure method.
> Then Guice will inject that variable as part of its Injector creation.
> 2) Use injector.getInstance(Key.get(IDrawGraphService.class, ToDot.class))
> instead. That tells Guice that you want to retrieve the instance defined by
> the Key "@ToDot IDrawGraphService", as opposed to just "IDrawGraphService".
>
> sam
>
>
>
> On Mon, Jul 19, 2010 at 11:21 AM, Jerem's <[email protected]> wrote:
> > Hello I try to use annotatoij on a local variable :
>
> > this is my module :
>
> > public class DrawModule extends AbstractModule {
>
> > �...@override
> > protected void configure() {
>
> > this.bind(IDrawGraphService.class).annotatedWith(ToDot.class).to(DrawDotSer
> > viceImpl.class);
> > }
> > }
>
> > and my Annotation look like that :
>
> > @Retention(RUNTIME)
> > @Target({ LOCAL_VARIABLE, FIELD, PARAMETER })
> > @BindingAnnotation
> > public @interface ToDot {
>
> > }
>
> > and I try to do that :
>
> > Injector drawGraphInjector = Guice.createInjector(new DrawModule());
> > @ToDot
> > IDrawGraphService drawDotService =
> > drawGraphInjector.getInstance(IDrawGraphService.class);
>
> > But I have an exception :
>
> > Exception in thread "main" com.google.inject.ConfigurationException:
> > Guice configuration errors:
>
> > 1) No implementation for
> > fr.irisa.cairn.simpleGraph.drawGraph.service.IDrawGraphService was
> > bound.
> > while locating
> > fr.irisa.cairn.simpleGraph.drawGraph.service.IDrawGraphService
>
> > 1 error
> > at com.google.inject.InjectorImpl.getProvider(InjectorImpl.java:784)
> > at com.google.inject.InjectorImpl.getProvider(InjectorImpl.java:743)
> > at com.google.inject.InjectorImpl.getInstance(InjectorImpl.java:793)
> > at
> > fr.irisa.cairn.test.simpleGraph.runTimeTest.Launch.Main.main(Main.java:
> > 25)
>
> > do you know why?
>
> > jérémie
>
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