Get bound TypeListeners

[Alex]

I hope I haven't missed anything obvious but is there a way to get the
bound TypeListeners for an Injector? I have poked around with
Injector.getAllBindings() which in turn provides access to the
Providers but I don't ever see my bound listeners. The only reason I
want to access this information is to be able to easily glean
information about my Guice configuration and what exactly is bound
through the Injector. I am ultimately hoping to expose this through a
simple web interface for environment testing and debugging.

I even looked at the Grapher but that didn't seem to provide what I
wanted either, assuming once again that I didn't miss something.

Thanks!

[Sam Berlin]

I don't believe there's currently a way.  Injector is missing (and in need of) a getElements() method similar to Elements.getElements(Module).

 sam

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[Christian Edward Gruber]

Do we have an existing issue for getElements() outstanding?

Christian.

[Sam Berlin]

Hmmm, I don't think so.

 sam

[Alex]

FYI, I am ashamed to admit but as a terrible workaround I simply use reflection to get at the TypeListenerBindings. It would be nice though if these were included from the call to getAllBindings.

Injector injector = Guice.createInjector(...);

Class injectorImplClass = Class.forName("com.google.inject.internal.InjectorImpl");

Field field = injectorImplClass.getDeclaredField("state");

field.setAccessible(true);

Object state = field.get(injector);

Class stateClass = Class.forName("com.google.inject.internal.State");

Method method = stateClass.getDeclaredMethod("getTypeListenerBindings");

method.setAccessible(true);

for (final TypeListenerBinding typeListenerBinding : (List<TypeListenerBinding>) method.invoke(state)) {

    // Do something with the TypeListenerBinding

[Sam Berlin]

getAllBindings would be incorrect because that returns Bindings, not Elements (and TypeListeningBinding is an Element, not a Binding, despite its name).  But you're right that we should expose all the Elements from the Injector).

 sam

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