March 2015 - dfdl-wg - lists.ogf.org

still no need for fn:error
by Mike Beckerle 03 Aug '16

03 Aug '16

Here's the example as suggested by Jonathan of how to issue an error that I previously was suggesting needed fn:error. I'm convinced this is sufficient and we can avoid the need for fn:error now. <xs:element name="magic_number" type="ex:uint32" dfdl:byteOrder="bigEndian"> <xs:annotation> <xs:appinfo source="*http://www.ogf.org/dfdl/*<http://www.ogf.org/dfdl/dfdl-1.0/> "> <dfdl:assert test="{ (xs:unsignedInt(.) eq *dfdl:hUInt('0xa1b2c3d4')*) | (xs:unsignedInt(.) eq *dfdl:hUInt('0xd4c3b2a1')*) }" message="{ fn:concat( 'Magic number ', dfdl:hexBinary(dfdl:unsignedInt(.)), ' was not 0xA1B2C3D4 (for bigEndian) or 0xD4C3B2A1 (for littleEndian).' }" /> <dfdl:setVariable ref="ex:bOrd">{ xs:unsignedInt(.) }<dfdl:setVariable> </xs:appinfo> </xs:annotation> </xs:element> -- Mike Beckerle | OGF DFDL Workgroup Co-Chair | Tresys Technology | www.tresys.com

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OGF DFDL WG Call Minutes 2015-03-31
by Steve Hanson 31 Mar '15

31 Mar '15

Please find minutes from the above call at https://redmine.ogf.org/dmsf_files/13415?download= Note: calls are bi-weekly from now on. Regards Steve Hanson Architect, IBM DFDL, Co-Chair, OGF DFDL Working Group IBM SWG, Hursley, UK smh(a)uk.ibm.com tel:+44-1962-815848

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OGF DFDL WG Call Agenda 2015-03-31
by Steve Hanson 31 Mar '15

31 Mar '15

Please find agenda for call on Redmine at https://redmine.ogf.org/dmsf_files/13415?download= Clocks are back in sync now so call is at regular time (4pm UK, 11am Eastern). Regards Steve Hanson Architect, IBM Data Format Description Language (DFDL) Co-Chair, OGF DFDL Working Group IBM SWG, Hursley, UK smh(a)uk.ibm.com tel:+44-1962-815848

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OGF DFDL WG Call Minutes 2015-03-24
by Steve Hanson 25 Mar '15

25 Mar '15

Please find minutes from the above call at https://redmine.ogf.org/dmsf_files/13406?download= Regards Steve Hanson Architect, IBM DFDL, Co-Chair, OGF DFDL Working Group IBM SWG, Hursley, UK smh(a)uk.ibm.com tel:+44-1962-815848

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escapeScheme - escapeBlockEnd is missing?
by Andrew Edwards 25 Mar '15

25 Mar '15

We've hit a situation where a schema defines an element using an escapeKind of escapeBlock and the data contains an escapeBlockStart but it does not contain an escapeBlockEnd. I would expect this to be an error, but I can't find anything for this case in the specification. Shall we take this as an action in the next call, or shall I raise an issue for it? Andy Andy Edwards - IBM Integration Bus - DFDL Email: andy.edwards(a)uk.ibm.com Snail Mail: MP211, Hursley park, Hursley, WINCHESTER, Hants, SO21 2JN Tel int: 247222 Tel ext: +44 (0)1962 817222 Desk: DE3 V17 The Feynman problem solving Algorithm 1) Write down the problem 2) Think real hard 3) Write down the answer -- Murray Gell-mann in the NY Times 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

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Action 278: Unparser maxOccurs issue
by Steve Hanson 24 Mar '15

24 Mar '15

Please have a position on the below proposal from IBM for this week's WG call. Regards Steve Hanson Architect, IBM DFDL Co-Chair, OGF DFDL Working Group IBM SWG, Hursley, UK smh(a)uk.ibm.com tel:+44-1962-815848 From: Steve Hanson/UK/IBM To: DFDL-WG <dfdl-wg(a)ogf.org> Date: 12/01/2015 16:56 Subject: Unparser maxOccurs issue Possible change to spec needed., where it describes what happens when maxOccurs is exceeded during unparsing for occursCountKind 'fixed' and 'implicit' (and by implication scalar elements). It currently says it is a processing error. I think it is better to say that the unparser moves on when maxOccurs is reached. This makes the behaviour analogous to parsing, when it does not try to parse beyond maxOccurs and moves on. The current unparser wording is based on the assumption that any next occurrence of the element in the infoset must be an error, but this is not true - the next occurrence could be an occurrence of a same named element later in the schema. An obvious example is: <xs:element name="data" minOccurs="2"maxOccurs="2" dfdl:occursCountKind="fixed" ... /> <xs:element name="stuff" minOccurs="0" dfdl:occursCountKind="implicit" ... /> <xs:element name="data" maxOccurs="2" maxOccurs="2" dfdl:occursCountKind="fixed" ... /> with an infoset where 'stuff' is missing: message_data data - xx1 data - xx2 data - yy1 data - yy2 A more interesting example is this, taken from MIL-STD-2045 schema (my bold comments added): <xsd:sequence dfdl:separator="">  <xsd:choice> <xsd:sequence dfdl:separator=""> <xsd:group ref="FPI_true"/> <xsd:element dfdl:length="4" dfdl:lengthKind="explicit" name="Value1" type="xsd:string"/> </xsd:sequence> <xsd:sequence dfdl:separator=""> <xsd:group ref="FPI_false"/> </xsd:sequence> </xsd:choice>  <xsd:choice> <xsd:sequence dfdl:separator=""> <xsd:group ref="FPI_true"/> <xsd:element dfdl:length="4" dfdl:lengthKind="explicit" name="Value2" type="xsd:string"/> </xsd:sequence> <xsd:sequence dfdl:separator=""> <xsd:group ref="FPI_false"/> </xsd:sequence> </xsd:choice>  <xsd:choice> <xsd:sequence dfdl:separator=""> <xsd:group ref="FPI_true"/> <xsd:element dfdl:length="4" dfdl:lengthKind="explicit" name="Value3" type="xsd:string"/> </xsd:sequence> <xsd:sequence dfdl:separator=""> <xsd:group ref="FPI_false"/> </xsd:sequence> </xsd:choice> </xsd:sequence> ...where the FPI_true and FPI_false elements are defined in their own global groups. <xsd:group name="FPI_true"> <xsd:sequence dfdl:separator=""> <xsd:element default="true" dfdl:length="1" dfdl:lengthKind="explicit" dfdl:textBooleanFalseRep="0" dfdl:textBooleanTrueRep="1" name="FPI_true" type="xsd:boolean"> <xsd:annotation> <xsd:appinfo source="http://www.ogf.org/dfdl/"> <dfdl:discriminator>{. eq fn:true()}</dfdl:discriminator> </xsd:appinfo> </xsd:annotation> </xsd:element> </xsd:sequence> </xsd:group> <xsd:group name="FPI_false"> <xsd:sequence dfdl:separator=""> <xsd:element default="false" dfdl:length="1" dfdl:lengthKind="explicit" dfdl:textBooleanFalseRep="0" dfdl:textBooleanTrueRep="1" name="FPI_false" type="xsd:boolean"> </xsd:element> </xsd:sequence> </xsd:group> If the infoset looked like the following an error would be given, whereas it is valid because the second FPI_false is for Value2: message_prefixedOccurs FPI_false - false FPI_false - false FPI_true - true Value3 - 9999 Regards Steve Hanson Architect, IBM DFDL Co-Chair, OGF DFDL Working Group IBM SWG, Hursley, UK smh(a)uk.ibm.com tel:+44-1962-815848 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

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OGF DFDL WG Call Agenda 2015-03-24
by Steve Hanson 23 Mar '15

23 Mar '15

Please find agenda for call on Redmine at https://redmine.ogf.org/dmsf_files/13406?download= (ignore that is says 17th, agenda has not changed) Please don't forget to adjust for DST in US. Call is at 12pm EDT this week. Regards Steve Hanson Architect, IBM Data Format Description Language (DFDL) Co-Chair, OGF DFDL Working Group IBM SWG, Hursley, UK smh(a)uk.ibm.com tel:+44-1962-815848

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Confirmed: DFDL Working Group Call (24 Mar 16:00 GMT in IBM Hursley DE3S09)
by Steve Hanson 23 Mar '15

23 Mar '15

Confirmed: DFDL Working Group Call 24/03/2015 - (Repeats) Location: IBM Hursley DE3S09 Steve Hanson has confirmed this meeting Repeats This entry repeats Required: mbeckerle(a)tresys.com, mbeckerle.dfdl(a)gmail.com Optional: Alex Wood1/UK/IBM@IBMGB, Andrew Edwards/UK/IBM@IBMGB, dfdl-wg(a)ogf.org, jorge.marizan(a)gmail.com, Mark Frost/UK/IBM FYI: OGF DFDL WG weekly call dial-in details. Passcode for Participants: 5381214 Canada Toll-Free 888-426-6840 China Toll-Free 10-800-711-1071 CHINA NETCOM GROUP USERS China Toll-Free 10-800-110-0996 CHINA TELECOM SOUTH USERS France Toll-Free 0800-94-0558 Germany Toll-Free 0800-000-1018 India Toll-Free 000-800-100-1176 Ireland Toll-Free 1-800-943-427 Israel Toll-Free 1-809-417-783 United Kingdom Caller Paid 0-20-30596451 United Kingdom Toll-Free 0800-368-0638 USA Caller Paid 215-861-6239 USA Toll-Free 888-426-6840 Other international numbers available - e-mail smh(a)uk.ibm.com. OGF DFDL Home: http://www.ogf.org/dfdl Redmine DFDL: http://redmine.ogf.org/projects/dfdl-wg DFDL Getting Started: http://www.ibm.com/developerworks/library/se-dfdl/ DFDL 1.0 Spec: http://www.ogf.org/documents/GFD.207.pdf

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OGF DFDL WG Call 2015-03-17 - cancelled
by Steve Hanson 17 Mar '15

17 Mar '15

Mike not available. Next meeting is 24th. Regards Steve Hanson Architect, IBM DFDL Co-Chair, OGF DFDL Working Group Hursley, UK smh(a)uk.ibm.com tel:+44-1962-815848

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Cancelled: DFDL Working Group Call
by Steve Hanson 17 Mar '15

17 Mar '15

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