The type called DFDLExpressionOrPatternOrNothing only makes sense for use
in one place - the element value of an assert or discriminator.
Regards
Steve Hanson
Architect, IBM Data Format Description Language (DFDL)
Co-Chair, OGF DFDL Working Group
IBM SWG, Hursley, UK
smh@uk.ibm.com
tel:+44-1962-815848
From: Suman Kalia
To: Mike Beckerle ,
Cc: dfdl-wg@ogf.org, dfdl-wg-bounces@ogf.org
Date: 19/03/2013 17:29
Subject: Re: [DFDL-WG] whitespace in DFDL annotations: right now
regex is xs:string, expression is xs:token
Sent by: dfdl-wg-bounces@ogf.org
Mike - I am not sure but my gut feeling is that it would start with the
most restrictive one first. i.e If empty string ( assuming it has
length facet 1) - would match Nothing , then xsd:token which is
restricted form of xs:string. I think you are going to get string with
white spaces collpsed ( xsd:token) if it not empty string. You can run
few tests to see the behavior..
Suman Kalia
IBM Canada Lab
WMB Toolkit Architect and Development Lead
Tel: 905-413-3923 T/L 313-3923
Email: kalia@ca.ibm.com
For info on Message broker
http://www.ibm.com/developerworks/websphere/zones/businessintegration/wmb.ht...
From: Mike Beckerle
To: dfdl-wg@ogf.org,
Date: 03/19/2013 12:43 PM
Subject: [DFDL-WG] whitespace in DFDL annotations: right now regex
is xs:string, expression is xs:token
Sent by: dfdl-wg-bounces@ogf.org
This came up on the call. The schemas I have for DFDL annotations have
DFDLRegularExpression as an xs:string, and DFDLExpression as an xs:token.
I have no clue what a union of these types behaves like. But we have a
union called DFDLExpressionOrPatternOrNothing which is a 3-way union of
DFDLExpression, DFDLRegularExpression, and EmptyString (which is also
derived from xs:string but has length facet of 0 as well.
--
Mike Beckerle | OGF DFDL Workgroup Co-Chair | Tresys Technology |
www.tresys.com
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