I'd like to discuss allowing time zone to be optional with the 'I'
calendar pattern symbol. It looks like the ISO 8601 restricted profile
insists that time zone appears if there are time components. See below.
Regards
Steve Hanson
Architect, Data Format Description Language (DFDL)
Co-Chair, OGF DFDL Working Group
IBM SWG, Hursley, UK
smh@uk.ibm.com
tel:+44-1962-815848
----- Forwarded by Steve Hanson/UK/IBM on 05/03/2013 10:52 -----
From: Steve Hanson/UK/IBM
To: "Costello, Roger L." ,
Cc: David Hardcastle/UK/IBM@IBMGB, "Cranford, Jonathan W."
, "Garriss Jr., James P."
Date: 05/03/2013 10:51
Subject: Re: MBTK doesn't seem to support xsd:time correctly
Roger,
XML Schema spec talks about what is allowed in the value space of the XML
Schema types, ie, what DFDL creates in its infoset.
When parsing, DFDL uses a calendar pattern to identify what calendar
components appear in the data, using dfdl:calendarPatternKind and
dfdl:calendarPattern properties. If the pattern contains fractional
seconds symbols ('SSS'), then at least one fractional second must appear
in the data else it is an error. If the pattern contains timezone symbols
(eg, 'Z') then a time zone must appear in the data else it is an error.
If you have data where the appearance of fractional seconds and/or time
zone is optional, you might be able to use the calendar pattern 'I' symbol
instead. This allows the data to match the time component of any of the
'granularities' in the ISO 8601 restricted profile (
http://www.w3.org/TR/NOTE-datetime). This will work if your data is of
the form HH:mm[:ss[.SSS]][TZD]. Does your data match the ISO8601
restricted profile?
Testing the 'I' symbol this today I think there is a bug in MBTK where it
only allows either no fractional seconds at all or exactly 3 fractional
seconds (it should allow any number). I will raise a defect. Also,
although MBTK allows time zone to be missing for 'I', I am not sure this
is permitted by the restricted profile which seems to insist on time zone
being present. I will raise this with the DFDL Working Group, as it seems
to me that allowing time zone to be optional is useful.
Regards
Steve Hanson
Architect, Data Format Description Language (DFDL)
Co-Chair, OGF DFDL Working Group
IBM SWG, Hursley, UK
smh@uk.ibm.com
tel:+44-1962-815848
From: "Costello, Roger L."
To: David Hardcastle/UK/IBM@IBMGB, Steve Hanson/UK/IBM@IBMGB,
Cc: "Cranford, Jonathan W." , "Garriss Jr., James
P."
Date: 04/03/2013 18:24
Subject: MBTK doesn't seem to support xsd:time correctly
Hello Steve and David,
Here I declare a time element of type xsd:time:
According to the XML Schema specification the xsd:time datatype can
optionally specify fractional digits, e.g.:
11:30:30.333 +0500
and timezone is optional:
11:30:30
However, if I use fractional digits I get an error and if I omit timezone
I get an error.
I looked at the DFDL spec and I don't see any mention about not allowing
fractional seconds or requiring timezone.
Is this a bug in MBTK?
/Roger
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
