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Subject: Re: [sca-assembly] NEW ISSUE: (1.2) Must a global domain channel bedeployed before it can be used?
- From: Peter Niblett <peter_niblett@uk.ibm.com>
- To: Eric Johnson <eric@tibco.com>
- Date: Mon, 31 Jan 2011 18:02:55 +0000
Eric
You said..
Neither of the above indicate whether or not the global
domain channel
can be used before it is referenced.
I'm not sure how you can "use"
a channel without referencing it (I assume "reference" means
"wire to/from"), but I think the question you are asking is the
one in the title - "can you reference a channel that hasn't been defined
to the SCA assembly?". I think this is one place where the current
spec is clear.. you can't reference a domain channel that hasn't been defined.
So it looks as though your issue is
to say that we should change the spec to say that it permits (in fact requires)
autocreation of domain channels. Presumably these channels would
have to be created with default attributes (though I know you think they
shouldn't have attributes at all).
Regards
Peter Niblett
IBM Senior Technical Staff Member
Member of the IBM Academy of Technology
+44 1962 815055
+44 7825 657662 (mobile)
From:
Eric Johnson <eric@tibco.com>
To:
OASIS SCA Assembly
<sca-assembly@lists.oasis-open.org>
Date:
31/01/2011 17:19
Subject:
[sca-assembly]
NEW ISSUE: (1.2) Must a global domain channel be deployed before it can
be used?
Title: Must a global domain channel be deployed before
it can be used?
Target: Assembly 1.2 WD 03
Description:
Via the "@target" and "@source" attributes defined
on a consumer &
producer, the assembler can reference global domain channels.
In section 5.8, the presumed to be normative text reads "SCA runtimes
MUST support the use of domain channels [ASM????]." That is
followed by:
"To create a Domain Channel, deploy a composite containing a channel
directly to the SCA Domain (i.e., do not use that composite as the
implementation of some component in the Domain)."
Neither of the above indicate whether or not the global domain channel
can be used before it is referenced.
Proposal:
General theme: do not require the global domain channel to exist before
it can be used.
Specific text (needs refinement?):
In section 5.8, Paragraph #2, append:
When contributing artifacts to a domain that contain references to
global domain channels that have not been created, the SCA runtime MUST
automatically create said global domain channels, and cannot reject such
contributions [ASM????].
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