Suman Looking at the XML schema-for-schemas, and doing a test in the XSD editor in eclipse, XSD enumeration facets are modelled as xs:NMTOKEN and not xs:string, like DFDL enums. XSD is perfectly happy to strip/collapse white space. I think therefore that we should be doing the same for DFDL enum properties. I don't see any harm in this - an enum is a contiguous sequence of non-whitespace characters anyway, so any leading/trailing whitespace is harmless. Looks like XSD pattern facet is modelled as xs:string, preserving white space. We should do the same for DFDL regex properties. 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: Steve Hanson/UK/IBM To: Suman Kalia , Cc: dfdl-wg@ogf.org, dfdl-wg-bounces@ogf.org, Mike Beckerle Date: 19/03/2013 17:41 Subject: Re: [DFDL-WG] whitespace in DFDL annotations: right now regex is xs:string, expression is xs:token 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 -- dfdl-wg mailing list dfdl-wg@ogf.org https://www.ogf.org/mailman/listinfo/dfdl-wg -- dfdl-wg mailing list dfdl-wg@ogf.org https://www.ogf.org/mailman/listinfo/dfdl-wg Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU