Re: [sca-assembly] [Issue 95] "wiredByImpl" is an invalid attribute for aComposite Reference

[Mike Edwards <mike_edwards@uk.ibm.com>]

Folks,

Comments inline...

Yours,  Mike.

Strategist - Emerging Technologies, SCA & SDO.
Co Chair OASIS SCA Assembly TC.
IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
Phone & FAX: +44-1962-818014    Mobile: +44-7802-467431  
Email:  mike_edwards@uk.ibm.com

Anish Karmarkar <Anish.Karmarkar@oracle.com>
wrote on 03/12/2008 00:14:09:

<snip>
> 
> Not sure I follow. I agree that one can't specify bindings for 
> wiredByImpl. But, if I want to ensure that a particular binding feature
> is used for such a reference, I'll include an appropriate intent.
If I 
> would like to add a binding feature but want to allow overrides I
can 
> include an interaction policy.
> I may also have implementation policies that have nothing to do with
> bindings.
> Perhaps I have missed something in the spec that disallows policy
sets 
> on references that do not contain a binding.
> 
> -Anish
> --
> 
<snip>

There is nothing in the spec that disallows policy
sets on references.
However, my observation is that PolicySets are usually
binding-specific, so 
that it is not useful to specify them until the binding
is fixed.  I agree
with your point that you can restrict the choice of
binding with an intent,
so that in that case, it might be useful to add some
PolicySets.

I'm not sure about your point about "allowing
overrides" - if you're making
the distinction between intents which cannot be overridden
and PolicySets, 
which can be overridden - that is true.

As for implementation policies, I don't see them playing
a part here.  I
don't see them being imposed on a component by means
of attachment to a
promoting composite reference.

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