- dfdl-wg - lists.ogf.org

Clarification: zero-bit-long integer parses to value 0, or parse-error or?
by Mike Beckerle 21 Mar '20

21 Mar '20

Consider: <xs:element name="spare" dfdl:length="{ $tns:WordPaddingBits }"> <xs:simpleType dfdl:lengthKind="explicit"> <xs:annotation> <xs:appinfo source="http://www.ogf.org/dfdl/"> <dfdl:assert test="{ . eq 0 }" /> </xs:appinfo> </xs:annotation> <xs:restriction base="xs:unsignedInt"> <xs:enumeration value="0" /> </xs:restriction> </xs:simpleType> </xs:element> Now, suppose the variable tns:WordPaddingBits has value 0. So this padding integer will be length 0 (this binary data with lengthUnits bits). Currently, Daffodil gives a runtime SDE on this. The assert test expression complains that "." has no value. I would claim this should either provide a value of 0 for this integer, or it should be a parse error because you must have at least 1 bit. Thoughts? Mike Beckerle | OGF DFDL Workgroup Co-Chair | Owl Cyber Defense | www.owlcyberdefense.com (Tresys is now part of Owl) Please note: Contributions to the DFDL Workgroup's email discussions are subject to the OGF Intellectual Property Policy <http://www.ogf.org/About/abt_policies.php>

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OGF DFDL WG Calls in March 2020 - all cancelled
by Steve Hanson 03 Mar '20

03 Mar '20

Canceling all calls in March as both Steve & Mike are busy. 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: OGF DFDL Working Group Call
by Steve Hanson 03 Mar '20

03 Mar '20

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Cancelled: OGF DFDL Working Group Call
by Steve Hanson 03 Mar '20

03 Mar '20

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Cancelled: OGF DFDL Working Group Call
by Steve Hanson 19 Feb '20

19 Feb '20

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Cancelled: OGF DFDL Working Group Call
by Steve Hanson 06 Feb '20

06 Feb '20

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Cancelled: OGF DFDL Working Group Call
by Steve Hanson 23 Jan '20

23 Jan '20

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Apache Daffodil (incubating) 2.5.0 released
by Mike Beckerle 13 Jan '20

13 Jan '20

The Apache Daffodil (incubating) community is pleased to announce the release of version 2.5.0. Notable changes in this release include user defined functions, BLOBs, unordered sequences, 2GB+ files, and preparation for decreasing schema compile time. This release also improves interoperability with IBM DFDL including all the schemas published at https://github.com/DFDLschemas Detailed release notes and downloads are available at: https://daffodil.apache.org/releases/2.5.0/ Daffodil is an open source implementation of the Data Format Description Language (DFDL) specification that uses DFDL schemas to parse fixed format data into an infoset, which is most commonly represented as either XML or JSON. This allows the use of well-established XML or JSON technologies and libraries to consume, inspect, and manipulate fixed format data in existing solutions. Daffodil is also capable of the reverse by serializing or "unparsing" an XML or JSON infoset back to the original data format. For more information about Daffodil visit: https://daffodil.apache.org/ Regards, The Apache Daffodil Team 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 <http://www.ogf.org/About/abt_policies.php>

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pre-proposal for new experimental feature: User-defined Functions (UDF)
by Mike Beckerle 13 Jan '20

13 Jan '20

There's no write up in offical Experimental Feature proposal form yet,, but there are these things about the Daffodil UDF implementation that is in forthcoming daffodil 2.5.0. https://cwiki.apache.org/confluence/display/DAFFODIL/Proposal%3A+Feature+to… https://github.com/apache/incubator-daffodil/tree/master/daffodil-udf 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 <http://www.ogf.org/About/abt_policies.php>

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Cancelled: OGF DFDL Working Group Call
by Steve Hanson 09 Jan '20

09 Jan '20

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