The
logic is based on incomplete background.
Just
to be clear, the OASIS PLCS TC was formed to develop the Data EXchange sets for
PLCS, based on the ISO 10303-239 standard, and providing feedback to the
standard if required. A clear liaison has been established between the two
organisations to emphasise this relationship. OASIS was chosen as the host
for the continuing work in order to avoid the cost of continuing the PLCS inc
consortium, on the grounds of administrative convenience, rather than
XML.
Just
as with STEP, one possible implementation form for the DEX EXPRESS models is the
XML schema mapping. Part 21 files can be generated just as easily,
and will be required by some of the participants.
Howard
Mason
*** WARNING *** This mail has
originated outside your organization, either from an external partner or
the Global Internet. Keep this in mind if you answer this message.
|
Hi Tim and
Tim,
I was the author of the
offending email so want to comment.
I’ve never been to a
PLCS consortium meeting so don’t know what was debated or when. However, what I
said is the obvious, logical conclusion of the actions taken wrt standardizing
PLCS for industrial use. I would be surprised, but not shocked, if people don’t
realize this.
1 OASIS is a body for
making XML-based industrial standards.
2 The PLCS consortium
members have reformed as the OASIS PLCS TC.
3 That TC plans on
publishing standards with the OASIS “seal of approval”.
4 Therefore, an
XML-based PLCS standard is what will be published and is what the members expect
industry to use.
If there’s an error in
my logic, please point it out.
I hope you aren’t
suggesting that the OASIS PLCS TC was formed to publish EXPRESS-based standards
and push Part 21 implementations. If that’s the case, all I can say is that I
believe that’s a mistake of colossal proportions wrt widespread take-up of
PLCS.
Cheers,
David
-----Original
Message----- From: Tim
[mailto:timturner11@bellsouth.net] Sent: 08 June 2004 21:42 To: plcs@lists.oasis-open.org Cc: 'Tim King' Subject: RE: [plcs] FW: Question to AP
owners/implementors on XML Schema use (Part 28 Edition 2)
I, for one, was rather
alarmed by the impression that the consortium had already made such a decision;
apparantly with little debate!
I fully agree with your
latter statement!
-----Original
Message----- From: John
Dunford [mailto:esukpc15@gotadsl.co.uk] Sent: 08 June 2004 15:03 To: 'Tim King';
plcs@lists.oasis-open.org Subject: RE: [plcs] FW: Question to AP
owners/implementors on XML Schema use (Part 28 Edition 2)
Although I have not
been much involved of late I agree with Tim that the proposed
wording could be improved. The aim is to enable XML, not to kill
off EXPRESS.
John Dunford,
Eurostep
Limited,
25, Chaucer Road, BATH BA2 4QX,
UK
Tel: +44 1225
789347
Mobile: +44 0797 491
8202
www.eurostep.com
www.share-a-space.com
-----Original
Message----- From: Tim King
[mailto:tmk@lsc.co.uk] Sent: 03 June 2004 09:59 To:
'plcs@lists.oasis-open.org' Subject: [plcs] FW: Question to AP
owners/implementors on XML Schema use (Part 28 Edition 2)
It has
been suggested that the quote at point 6 below:
"The
PLCS consortium is planning on publishing the AP239 ARM XML Schema through
OASIS, so they don t expect implementations to be
EXPRESS-based."
is not
an agreed OASIS PLCS TC position in respect of not using EXPRESS-based
implementations. Certainly, I believe that the second half of the
sentence is not a logical sequitur of the first. I have made this
second point to the receipients of the original message.
As
ever, Tim.
*************************************************************************
* * Dr. Timothy M. KING CEng
MIMechE PhD DIC ACGI * Executive Consultant, Enterprise Integration
Technologies *
LSC Group, Concept House, Victoria Road, TAMWORTH, UK - B79
7HL *
Switchboard: +44-1827-708000 Fax: +44-1827-708500
* Direct telephone:
+44-1827-708535 (with VoiceMail) * Mobile telephone: +44-7813-131779
* e-mail:
tmk@lsc.co.uk Internet: http://www.lsc.co.uk/
* *************************************************************************
At
04:39 PM 12/2/2003 +0000, David Price wrote:
>Hello WG3 and WG12, > > > >We ve been working with the AP233
and AP239 teams on Part 28 Edition 2 and XML Schema. Part 28 E2 introduces a
configuration language allowing the production of an XML schema to be tailored for an
EXPRESS schema. The tailoring can happen at the global, entity and/or
attribute level. The issue that has been raised during the discussions
with AP233 and AP239 is if, or how, this capability should be
used. > > > >I m trying to gather business requirements and
technical requirements in this area. If you have requirements or usage
scenarios in this area, I d appreciate hearing about them.
> > > >So far, what I ve heard from these
two teams (and relayed to the Part 28 team today) is the following:
> > > >1) A single configuration to
produce a default data exchange XML Schema for both (or all?) APs is required.
Some have said they want WG3/SC4 to agree and mandate a single configuration for AP
implementation. > >2) Exactly what the XML document looks like is
not that important as a high level, model based API will be
used. > >3) The XML schema elements should be
recognizable as being derived from the EXPRESS schema, but trying to reflect the
EXPRESS structure in XML is less important than simplicity and
consistency. > >4) Interoperability, and therefore the same
configuration, is a high priority for AP233, AP239 and PDM
capabilities. > >5) The first AP233 and AP239 implementations
will be based on the ARM, not the AIM. This may continue to be true for all
implementations as well. > >6) The PLCS consortium is planning on publishing
the AP239 ARM XML Schema through OASIS, so they don t expect implementations
to be EXPRESS-based. > > > >Do other AP teams share these requirements? I
agree they are not all completely consistent (ARM v. AIM), but requirements
seldom are. If your requirements are different, in what
way? > > > >Cheers, > >David > > > >Phone +44 20 7704 0499 > >Mobile +44 7788
561308 > >8 Highbury Place, Flat 5 > >London N5 1QZ
> >
DISCLAIMER: ***SECURITY LABEL:
NOT PROTECTIVELY MARKED*** The information in this message is
confidential and may be legally privileged. It is intended solely for the
addressee. Access to this message by anyone else is
unauthorised. If you are not the intended recipient, any disclosure,
copying, or distribution of the message, or any action or omission taken by
you in reliance on it, is prohibited and may be unlawful. Please
immediately contact the sender if you have received this message in error.
This e-mail originates from LSC Group. Registered in England & Wales No
2275471 Registered Office: Devonport Royal Dockyard, Devonport, Plymouth,
PL1 4SG
******************************************************************** This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. ********************************************************************
|
|