Hi,

 

While the subject of changing registration semantics has been brought up...
Has there been any previous discussion on the matter of Castle Windsor's
default behavior related to property-based injection (and possibly also
Resolve<T>()) when there are multiple components providing a given service?

 

Think of a scenario like this: there is a service called ISomeService, and
SomeServiceProviderOne and SomeServiceProviderTwo are both implementing the
ISomeService interface. Now, what happens when you try to inject a
component of ISomeService is that Castle Windsor chooses an arbitrary
component providing the given service.

 

To me, this seems like a bad default behavior, but perhaps I'm just not
seeing the full picture here. J

 

I'd rather have Resolve<T>() throw an exception in this case, since the
behavior is likely not completely predictable to the application using the
container. Which component will it get? Now, you could say that the
application shouldn't care, but in reality this might not be the case. You
might have specific needs, implying that you want ISomeChildService rather
than ISomeService, but perhaps you are yourself implementing some other
interface which makes it impossible to change the property type... for
example.

 

Is there a (simple) way to change this default behavior? Many thanks in
advance!

(And also, of course, the question is whether this default behavior is sane
or not...)

 

Best regards,

Per Lundberg

 

From: [email protected]
[mailto:[email protected]] On Behalf Of Alex Henderson
Sent: den 2 mars 2011 23:21
To: [email protected]
Subject: Re: Windsor breaking change: changing how container.ResolveAll
works <-- your feedback needed

 

+1 I didn't realise ResolveAll<> didn't just return those components
explicitly registered for that service.  I'm fine with the change, as it's
deterministic/won't break anything I've got relying on that feature.

 

Cheers,

 

Alex

On Thu, Mar 3, 2011 at 2:02 AM, Jason Meckley <[email protected]>
wrote:

I also thought Windsor only resolved all types explicitly registered. I
wouldn't have a problem with this change. 

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