OMG, I've seen this method, and didn't see the solution..... Thank
you !
I've changed my TypeListener to :
public void injectMembers(T t) {
if (provider != null) {
LOG.info("injecting guice/jformdesigner: " +
t.getClass());
Injector guiceInjector =
guiceInjectorProvider.get();
guiceInjector.injectMembers(provider);
provider.setTarget(t);
}
}
And, I simply pass the guiceInjectorProvider to this listener when
registering the listener.
On Jan 25, 5:33 pm, Stuart McCulloch <[email protected]> wrote:
> 2010/1/26 eric <[email protected]>
>
>
>
>
>
> > OK, here the deal :
>
> > I use JFormDesigner (a visual builder) , which generates an XML file,
> > that "declares" the tree of visual objects (JLabel, JTable, and, in
> > fact any kind of Beans (i.e. that can be instanciated with a
> > "newInstance" )
>
> > I feel that it was smart to "inject" those beans into my controller
> > class.
> > There is a runtime code, that reads the xml file, do the
> > instanciations , and provides a nice API based on the beans name.
>
> > I've added an annotation @Widget for fields in my controllers , and I
> > use the name of the annotated field to inject the corresponding bean
> > instance.
>
> > This is my "OwnInjector". It can't be replaced by guice, a simple
> > facade would be:
>
> > class OwnInjector {
> > injectInto(Object o) ;
> > }
>
> > and I've made a simple type listener
>
> > Now, as I've started using guice, and my controllers, my models are
> > injected by guice.
>
> > I've added a TypeListener so that whenever a controller is injected by
> > guice, It is also by my OwnInjector. It works, cool.
>
> > class JFormDesignerInjector<T> implements MembersInjector<T> {
> > OwnInjector myOwnInjector = new MyOwnInjector();
> > public void injectMembers(T t) {
> > if (provider != null) {
> > LOG.info("injecting guice/jformdesigner: "
> > + t.getClass());
> > myOwnInjector.injectInto(t);
> > }
> > }
> > }
>
> > But now, I want to go one step further, I want to replace Bean
> > instanciation ( calling "newInstance" ) by guice instanciation in my
> > OwnInjector. Have changed the code that says :
>
> > return super.newComponentInstance(beanClass, compName);
>
> > by the new one
> > return guiceInjector.getInstance(beanClass);
>
> the TypeEncounter passed into your TypeListener has methods to lookup
> Providers:
>
> getProvider(Class<T> type)
> getProvider(Key<T> key)
>
> but you must be careful to only call the Provider when the injector has been
> created
> (for example in the MembersInjector or InjectionListener instance which you
> register
> with the type encounter, as they are only called once injection has begun)
>
> for a concrete example of how this works take a look at:
>
> http://www.sonatype.com/people/2010/01/from-plexus-to-guice-3-creatin...
>
> the previous article describes the general custom-injector approach:
>
> http://www.sonatype.com/people/2010/01/from-plexus-to-guice-2-the-gui...
>
> HTH
>
> Therefore the idea was to simply have my "ownInjector" injected too,
>
>
>
>
>
> > so it can get access to the instance "guiceInjector".
>
> > But the problem is that I can't. And I feel stuck.
>
> > I've been looking for a way to change my facade into :
> > class OwnInjector {
> > injectInto(Injector guiceInjector, Object o) ;
> > }
>
> > and my inject by :
> > public void injectMembers(T t) {
> > if (provider != null) {
> > LOG.info("injecting guice/jformdesigner: "
> > + t.getClass());
> > Injector guiceInjector =
> > Guice.getInjectorFor( t );
> > myOwnInjector.injectInto(guiceInjector , t);
> > }
> > }
>
> > but, I can't find a way to retrieve the injector neither.
>
> > Thank for your help !
>
> > On Jan 25, 3:48 pm, Fred Faber <[email protected]> wrote:
> > > I'm a touch confused, but maybe that's irrelevant.
>
> > > If you're creating the target instances through guice, you can inject
> > your
> > > dependencies directly into them. I suspect you know this, and that there
> > is
> > > another reason you're using member injection.
>
> > > If these instances are not being created through guice, you can request
> > > injection onto them using Binder::requestInjection()
> > > (http://google-guice.googlecode.com/svn/trunk/javadoc/index.html?com/g.
> > ..
> > > )
>
> > > If neither of these solutions work, could you please work backwards and
> > > elaborate on the lifecycle of the target instances onto which you need to
> > > inject dependencies?
>
> > > On Mon, Jan 25, 2010 at 9:13 AM, eric <[email protected]> wrote:
> > > > Thank you for the answer, but it seems to me that your solution will
> > > > not work as required...
>
> > > > I want to "inject" stuff into my classes, but I don't want to call an
> > > > "injectoStuffInto(this)" for everyone and each class in my project,
> > > > this is simply NOT injection.
>
> > > > My classes that needs such injection are already annotated with my own
> > > > tag "@InjectMyStuff", therefore I already know I have to
> > > > "injectStuff" in it, and it works already, using TypeListener.
>
> > > > But the injectfStuff function use "Class.newInstance" (the javabean
> > > > standard) method to allocate "stuff". I just want to move to
> > > > injector.getInstance() instead, but I can't get my hands on a decent
> > > > injector while in the TypeListener (or anywhere else).
>
> > > > maybe with spi ?
>
> > > > On Jan 25, 1:58 pm, Fred Faber <[email protected]> wrote:
> > > > > inject Injector, not MyOwnInjector.
>
> > > > > On Jan 25, 2010 7:46 AM, "eric" <[email protected]> wrote:
>
> > > > > Hi,
>
> > > > > I've got a problem that I can't solve by myself with guice, a little
> > > > > help would be nice, thanks.
>
> > > > > I've got a routine, that injects some "stuff" from a resource into a
> > > > > given instance. Until now, the stuff that was injected was
> > > > > instanciated using "newInstance". That was nice, but now I'm getting
> > a
> > > > > guice-addict, I would like to instanciate this "stuff" using
> > > > > injector.getInstance().
>
> > > > > 1/ solution could be :
>
> > > > > Use a TypeListener,
>
> > > > > public void injectMembers(T t) {
> > > > > LOG.info("injecting
> > guice/jformdesigner: "
> > > > +
> > > > > t.getClass());
> > > > > myOwnInjector.injectInto(t);
> > > > > }
> > > > > }
>
> > > > > but myOwnInjector should have been instantiated by guice, And I can't
> > > > > make it !?
>
> > > > > 2/ a one liner in every class could go like this
>
> > > > > @Inject
> > > > > MyClass(MyOwnInjector in){
> > > > > in.injectInto(this);
>
> > > > > }
>
> > > > > But, hey, that's a ugly dependency, isn't it ?
>
> > > > > Any ideas ?
>
> > > > > --
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> --
> Cheers, Stuart
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