For call today.
Regards
Steve Hanson
Architect, Data Format Description Language (DFDL)
Co-Chair, OGF DFDL Working Group
IBM SWG, Hursley, UK
smh(a)uk.ibm.com
tel:+44-1962-815848
----- Forwarded by Steve Hanson/UK/IBM on 08/11/2011 09:20 -----
From:
Steve Hanson/UK/IBM
To:
Tim Kimber/UK/IBM@IBMGB
Cc:
Mike Beckerle <mbeckerle.dfdl(a)gmail.com>
Date:
07/11/2011 09:50
Subject:
Re: question on nilValueDelimiterPolicy
I'll add to the agenda for DFDL WG call.
Regards
Steve Hanson
Architect, Data Format Description Language (DFDL)
Co-Chair, OGF DFDL Working Group
IBM SWG, Hursley, UK
smh(a)uk.ibm.com
tel:+44-1962-815848
From:
Tim Kimber/UK/IBM
To:
Mike Beckerle <mbeckerle.dfdl(a)gmail.com>
Cc:
Steve Hanson/UK/IBM@IBMGB
Date:
04/11/2011 22:57
Subject:
Re: question on nilValueDelimiterPolicy
Mike,
I agree - I've raised this point before. I have always felt that
nilValueDelimiterPolicy should not apply to nilLogicalValue ( regardless
of whether the type is xs:string ). The existing definition makes life
very hard for implementers, and does not solve any pressing problems as
far as I can see.
regards,
Tim Kimber, Common Transformation Team,
Hursley, UK
Internet: kimbert(a)uk.ibm.com
Tel. 01962-816742
Internal tel. 246742
From: Mike Beckerle <mbeckerle.dfdl(a)gmail.com>
To: Steve Hanson/UK/IBM@IBMGB, Tim Kimber/UK/IBM@IBMGB
Date: 04/11/2011 18:34
Subject: question on nilValueDelimiterPolicy
Suppose
<sequence separator=",">
<element name="x" type="int" nillable="true" dfdl:initiator="x:"
dfdl:terminator=";"
dfdl:nilKind="logicalValue" dfdl:nilValue="-1" maxOccurs="3"/>
</sequence>
Now, if nilValueDelimiterPolicy="none", then some non-nils for this would
be:
[x:42;,x:3;,x:0;]
A nil for the middle one would be
[x:42;,-1,x:0;]
Does this feel broken to you? I.e., it seems very wierd to have a
nilKind="logicalValue", but use different initiator/terminator
conventions.
Now if type="string", or if type is not string, but
nilKind="literalValue", then having different initiator/terminator
conventions makes some sense, but when the nilValues are a reserved
in-band non-string value it seems wierd to me.
Comments?
--
Mike Beckerle | OGF DFDL WG Co-Chair
Tel: 781-330-0412
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