[DFDL-WG] How do I ignore the case of my initiator and my elements?

[Steve Hanson]

Issue #1 - use dfdl:ignoreCase 'yes' 

Issue #2 - this is a validation question so DFDL properties not applicable 
- use XSDL pattern facet

Regards

Steve Hanson
Architect, IBM Data Format Description Language (DFDL)
Co-Chair, OGF DFDL Working Group
IBM SWG, Hursley, UK
smh at uk.ibm.com
tel:+44-1962-815848



From:   "Garriss Jr., James P." <jgarriss at mitre.org>
To:     "dfdl-wg at ogf.org" <dfdl-wg at ogf.org>, 
Date:   19/06/2013 19:42
Subject:        [DFDL-WG] How do I ignore the case of my initiator and my 
elements?
Sent by:        dfdl-wg-bounces at ogf.org



Issue #1
 
Email header names have a set value, but in practice SMTP servers do what 
they want.  So this is the required header name for content type:
 
Content-Type: <some value>
 
But variations exist, such as this:
 
Content-type:  <some value>
 
Rather than trying to guess every possible combination, I think it would 
be good to simply ignore the case of the header name.
 
(I have modeled header names as initiators.)
 
Issue #2
 
The spec says that the value of the content type is case insensitive, so 
all the following possibilities (and more) are allowed:
 
Content-Type:  text/html
Content-Type:  TEXT/HTML
Content-Type:  Text/Html
Content-Type:  tExT/hTmL
 
So obviously I need to be able to ignore the case of the header’s value.
 
(I have modeled the type (e.g., text) and the subtype (e.g., html) as 
elements.  And as there’s obviously a limited set of allowed for each, 
I’ve constrained these with an enumerated list.)
 
I have attached a simplified version of the schema I’m using for the 
content header.  How would I modify it in order to ignore the case of the 
header name and the header value?
 
TIA!
 
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