IBM has DFDL schemas for X12, various releases
including the most common 4010, obtainable via support ticket (same as
for EDIFACT).
IBM has DFDL schemas for X12 HIPAA as
part of App Connect for Healthcare v5.
I'm sure there are formats out there
where all delimiters must be present. Old teletype formats like MATIP maybe.
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 <mbeckerle.dfdl@gmail.com>
To:
Steve Hanson <smh@uk.ibm.com>
Cc:
DFDL-WG <dfdl-wg@ogf.org>
Date:
20/04/2021 20:03
Subject:
[EXTERNAL] Re:
[DFDL-WG] example/use-case wanted - separatorSuppressionPolicy 'trailingEmptyStrict'
and 'never'
I see that X12 is the USA-used EDI message
standard - analogous to the UN/EDIFACT used outside USA. I'll pass along
that this was motivated by X12, though to my knowledge there is no DFDL
schema generally available for any part of X12. ZjQcmQRYFpfptBannerStart
This Message Is From an External Sender
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I see that X12 is the USA-used EDI message standard -
analogous to the UN/EDIFACT used outside USA.
I'll pass along that this was motivated by X12, though
to my knowledge there is no DFDL schema generally available for any part
of X12.
I think for SSP 'never' I can gen-up an example pretty
easily.
Given what I've got below, can you think of where such
formats would appear in anything real-world?
The only thing I can think of is somebody taking a COBOL
structure with two "occurs N times depending on ..." arrays in
it, and modernizing the format into something variable-length with separators
for use in a more modern application.
My example for separatorSuppressionPolicy='never' is below.
Assuming dfdl:occursCountKind='implicit' everywhere
<sequence dfdl:separator=","
dfdl:separatorSuppressionPolicy="never">
<element name="givenName" type="xs:string"
minOccurs="0" maxOccurs="3"/>
<element name="surname" type="xs:string"
minOccurs="0"/>
<element name="ph" type="xs:string"
minOccurs="0" maxOccurs="6"/>
</sequence>
This format means there are always 10 locations
separated by 9 commas.
Whether something is a givenName, surname,
or phone number is just determined positionally by counting the separators
as the parse passes them.
Well-formed instance:
"michael, james,,rogers,888-888-8888,777-777-7777,,,,"
XML flavored DFDL infoset:
<givenName>michael</givenName>
<givenName>james</givenName>
<surname>rogers</surname>
<ph>888-888-8888</ph>
<ph>777-777-7777</ph>
Well-formed instance:
"madonna,,,,,,,,,"
XML flavored equivalent infoset:
<givenName>madonna</givenName>
Both the above examples would unparse to
exactly the input data.
Mike Beckerle | OGF DFDL Workgroup Co-Chair | Owl Cyber
Defense | www.owlcyberdefense.com
Please note: Contributions to the DFDL Workgroup's email
discussions are subject to the OGF
Intellectual Property Policy
On Tue, Apr 20, 2021 at 1:08 PM Steve Hanson <smh@uk.ibm.com>
wrote:
'trailingEmptyStrict' was for X12 if
I recall. It is not valid to have trailing separators.
'never' I don't have an example for.
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 <mbeckerle.dfdl@gmail.com>
To: DFDL-WG
<dfdl-wg@ogf.org>
Date: 20/04/2021
15:12
Subject: [EXTERNAL]
[DFDL-WG] example/use-case wanted - separatorSuppressionPolicy 'trailingEmptyStrict'
and 'never'
Sent by: "dfdl-wg"
<dfdl-wg-bounces@ogf.org>
Users of Apache Daffodil have asked what these property values are for,
i.e., what are idiomatic uses of this property for actual formats, or in
other words, what kind of data are these properties needed for?
I'd like to provide them examples of this if anyone can recall the kinds
of specific use cases for these property values.
I've been searching through the example DFDL schemas I can find, and none
use trailingEmptyStrict or never for this property.
Mike Beckerle | OGF DFDL Workgroup Co-Chair | Owl Cyber Defense | www.owlcyberdefense.com
Please note: Contributions to the DFDL Workgroup's email discussions are
subject to the OGF
Intellectual Property Policy
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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