GENERIC data type

[Martin Hardwick]

David,

Thanks for sending out this reminder. I took a look at the slides
and noticed that there is no mention in them of the new
GENERIC, GENERIC_ENTITY and AGGREGATE data types. These new types
have more affect on the way P21 files are implemented and could
be quite revolutionary in their consequences. 

I think there would have been a vocal minority at the meeting
where this presentation was given (New Orleans?) who disagreed
with the conclusion that the consequences of the change are minor
and easy to handle in the 20 series if they had known that the
extension was going to include these new types.

Martin Hardwick

At 12:51 PM 10/19/2001 +0100, you wrote:
>WG11,
>
>On the 20s series impact of EXPRESS 2, this has been a question for quite
>some time. Attached is a presentation from Feb 2000 made on the subject.
>It's clearly out-of-date but still, people should not have been surprised by
>the issue.
>
>On conformance testing of Part 28, it's really hard to imagine that anyone
>will pay to set up and perform conformance testing of Part 28
>implementations. It's really just another data exchange format and as nobody
>does conformance testing of EXPRESS/Part 21 tools it's unlikely that anyone
>will do conformance testing of EXPRESS/Part 28 tools either.
>
>Cheers,
>David
>
>Phone: +44 (0)207 697 9790
>Mobile +44 (0)778 856 1308
>Fax: +44 (0)207 697 0879
>Eurostep Limited
>47A Huntingdon Street
>London, N1 1BP, UK
>
>
>> -----Original Message-----
>> From: owner-wg11 at steptools.com [mailto:owner-wg11 at steptools.com]On
>> Behalf Of Dave Loffredo
>> Sent: 2001 October 18 20:01
>> To: wg11 at steptools.com
>> Subject: WG11 status
>>
>>
>>
>> Hi everybody,
>>
>> At the Fukuoka ISO meeting, three new items of business were
>> introduced that require your attention:
>>
>> The first is the impact of the EXPRESS amendment on the other WG11
>> parts.  Dicussion of Part 21 and the SDAI bindings is summarized in
>> document wg11n179 (on SOLIS), but further input is needed from the
>> Part 25, Part 27, Part 28, and EXPRESS-X teams.
>>
>> Each of those teams need to look at the amendment and prepare a brief
>> evaluation of the impact.  Precise technical proposals are not needed
>> at the moment, just a statement of:
>>
>>       - Anticipated quantity of document changes.  Would it require
>>          an amendment or a new edition?   What clauses would likely
>>          be affected?
>>
>>       - Are the changes likely to be upward compatible?
>>
>>       - Anticipated impact & cost for vendors and users?
>>
>>
>> The second item of business is that SC4 has created an ad-hoc
>> committee for assess of harvest of IAI spec.  WG11 has been directed
>> to nominate a representative to this committee by the end of month.
>> If you are willing to serve on this, let me know.
>>
>> The third item of business is that SC4 passed a resolution directing
>> WG11 to prepare a NWI for conformance testing of the Part 28.  If you
>> are interested in working on this project, let me know.
>>
>> Thanks.
>>
>>                                       - Dave
>>
>>