Mike
I'm a bit lost on this now. The concept of applying lengthUnits='bits' to
xs:hexBinary is straightforward. It just counts bits. Bit order or byte
order is irrelevant, in the same way that it is irrelevant when counting
bytes for a hex binary. The only thing to note is that the fillByte needs
to be used to make up whole bytes.
I'm missing something here.
Regards
Steve Hanson
IBM Hybrid Integration, Hursley, UK
Architect, IBM DFDL
Co-Chair, OGF DFDL Working Group
smh@uk.ibm.com
tel:+44-1962-815848
mob:+44-7717-378890
Note: I work Tuesday to Friday
From: Mike Beckerle
To: DFDL-WG
Date: 20/11/2018 17:33
Subject: [DFDL-WG] Action 292 - version 2 proposal for hexBinary
with lengthUnits bits
Sent by: "dfdl-wg"
Users want a way to express an arbitrary unaligned string of bits, with
the appearance in the infoset being hexadecimal, not base 10.
Right now the only way I can see to meet this requirement while retaining
backward compatibility would be a new DFDL property.
So here's the new idea:
Property dfdl:hexBinaryRep with values 'bytes' or 'bits'. New property, so
defaulting (with suppressible warning) to 'bytes' for backward
compatibility in schemas not having the property.
When set to 'bits', then type xs:hexBinary would behave just like
xs:nonNegativeInteger, and all properties relevant to that type would be
applicable, and any use of XSD length facets on such elements would be an
SDE. The hexBinary string would be exactly same as if you took the
numeric value for a nonNegativeInteger and instead of presenting it as
base 10 digits, you use base 16 digits.
Mike Beckerle | OGF DFDL Workgroup Co-Chair | Tresys Technology |
www.tresys.com
Please note: Contributions to the DFDL Workgroup's email discussions are
subject to the OGF Intellectual Property Policy
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