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Roger,
This is certainly the approach ebXML and the latest V3 of ebMS is taking by
providing a hook to invoke an external validation service of choice.
This can certainly then use the context pointed to by the partner profile
associated with the exchange to determine the specific validation needed.
Certainly looking at CAM, really the messaging ebMS is at the bare-metal - doing
well-formedness tests and checking the delivery details - unpacking the
packaging - but really deferring to the business content layer to do the
interrogation of the actual content details.
Thanks, DW
=====================================================
Quoting costello@mitre.org:
> Hi Folks,
>
> I remember reading a long time ago a posting by David Megginson.
> Paraphrasing, David said, "when dealing with XML you are working down at the
> bare metal".
>
> Other technologies work down at the bare metal, such as TCP/IP. Perhaps
> there are lessons to be learned there? Certain TCP/IP packets are rejected
> as bad and the other packets are accepted and passed up to other layers,
> where those layers perform additional constraint checking.
>
> If we accept the conjecture that XML is down at the bare metal level, then
> perhaps the only constraint checking that should be done by an XML Schema is
> parallel to the kinds of checking that is done on TCP/IP packets. All other
> constraint checking is passed up to other layers.
>
> Can someone characterize the kind of constraint checking that is done on
> TCP/IP packets? What would be the parallel constraint checking in XML
> Schemas? /Roger
>
>
>
>
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