Re: [ubl-dev] A Subset for UBL 2.1 (like UBL Small Business Subset)

[Stephen D Green <stephengreenubl@gmail.com>]

Oh, and there are potentially two levels of conformance

for profiles which I propose are low hanging fruit here.

Firstly there is a minimal level - alias Small Business

Subset. This level would be something like the schema

set I sent. Even OIO and BII include more BIEs than this

level. Call this level 1, say.

 

Then, if you compare each of the UBL examples in the

package to the above you'll find there are those BIEs

it doesn't include which the examples do include, either

because they are BII examples or OIO examples or

others. If all these BIEs were added to the level 1 subset

together with any others which make sense (maybe

there is reason enough to remove a few too, such as

because due to possible redundancy or semantic shift)

you'd have another subset which might be specified.

Call this level 2, say. UBL proper could then be level 3.

 

This gives 3 levels of conformance (like in W3C OWL).

 

How to engineer the conformance clauses is something

else again. I could imagine one approach of stating

for each level the mimimum requirements for a sender

and the mimimum for a receiver - in two conformance

clauses (one for sending implementations, another for

receiving). There might be an emphsis on testability

with test beds in mind. I reckon the process of arriving

at these clauses could involve consideration of possible

requirements for test data (what mixes of BIEs in a

document MUST be rejected and what mixes accepted).

There might be considerations of what happens when a

receiver gets a UBL-valid document which includes BIEs

outside of the subset - must it reject it? should it reject it?

must it accept it? or would there best be no requirement?

What about extensions? ...

 

A lot of work, I imagine.

----

Stephen D Green

On 26 July 2011 08:32, Stephen D Green <stephengreenubl@gmail.com> wrote:

Sorry, by 'Conformance TC' I meant 'Conformance SC' of course.

----

Stephen D Green

On 26 July 2011 06:58, Stephen D Green <stephengreenubl@gmail.com> wrote:

Thanks Tim

 

I think another way to do it would be to form a Conformance TC

and make an SBS just one kind of 'conformance profile'[1] they

could consider for UBL. Then the SBS culd just be the basis of

one of potentially several UBL 'conformance profiles', perhaps

feeding into test beds, etc.

 

[1] - I guess by 'conformance profile' I mean a fairly lightweight

spec as external to the UBL spec (perhaps like the ebXML

profiles which are published from time to time) where the heavy

lifting is done in comprehensive conformance clauses (perhaps

more complex than the blanket UBL clause - perhaps a clause

for senders, another for receivers and another for the document).

----

Stephen D Green

On 26 July 2011 02:09, Tim McGrath <tim.mcgrath@documentengineeringservices.com> wrote:

your timing is incredible.  i have also been considering the fact that we now have several years implementation experience and it would be worthwhile to revisit this concept.  others have also suggested ideas for this and it seems we may be able to provide something alongside the 2.1 release.

do you think we should revive the SBS TC for this?

On 26/07/11 3:51 AM, Stephen D Green wrote:

Just as public review is due to start for UBL, I've

spent a few hours revisiting the subset work I did

starting with the UBL Small Business Subset and

updating it for UBL 2.1. (Maybe it can be developed

into a 2.1 SBS.)

 

I have put the attached together as a possible 2.1

subset similar to the UBL Small Business Subset

but supporting the digital signatures in UBL 2.1.

I hope the mail servers let me to do this. Apologies

if they do not.

 

Maybe folk will find it useful, although it is not a

comprehensive, thorough work like the BII and OIO

subsets. It represents my own understanding of what

I think is a compromise between minimalism and

practicality but I cannot claim a live implementation.

 

Is there still any scope for making the external subset

project outputs more integral to future UBL versions?

----

Stephen D Green

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