Semantic Definition Format (SDF) for Data and Interactions of Things: Compact Notation
draft-bormann-asdf-sdf-compact-00

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T2TRG                                                    C. Bormann, Ed.
Internet-Draft                                    Universität Bremen TZI
Intended status: Informational                              7 March 2021
Expires: 8 September 2021

 Semantic Definition Format (SDF) for Data and Interactions of Things:
                            Compact Notation
                   draft-bormann-asdf-sdf-compact-00

Abstract

   The Semantic Definition Format (SDF) is a format for domain experts
   to use in the creation and maintenance of data and interaction models
   in the Internet of Things.  It was created as a common language for
   use in the development of the One Data Model liaison organization
   (OneDM) definitions.  Tools convert this format to database formats
   and other serializations as needed.

   The SDF format is mainly intended for interchange between machine
   generation and machine processing.  However, there often is a need
   for humans to look at and edit SDF models.

   Similar to the way Relax-NG as defined in ISO/IEC 19757-2 has an XML
   format and a compact format (Annex C), this specification defines a
   compact format to go along SDF's JSON format.

   The present version of this document is mostly a proof of concept,
   but was deemed useful to obtain initial feedback on the approach
   taken.

Contributing

   Recent versions of this document are available at its GitHub
   repository https://github.com/cabo/sdfc (https://github.com/cabo/
   sdfc) -- this also provides an issue tracker as well as a way to
   supply "pull requests".

   General discussion of this SDF Internet-Draft happens on the mailing
   list of the IETF ASDF Working Group, asdf@ietf.org (subscribe at
   https://www.ietf.org/mailman/listinfo/asdf
   (https://www.ietf.org/mailman/listinfo/asdf)).

   The IETF Note Well applies (https://www.ietf.org/about/note-well/
   (https://www.ietf.org/about/note-well/)).

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Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on 8 September 2021.

Copyright Notice

   Copyright (c) 2021 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents (https://trustee.ietf.org/
   license-info) in effect on the date of publication of this document.
   Please review these documents carefully, as they describe your rights
   and restrictions with respect to this document.  Code Components
   extracted from this document must include Simplified BSD License text
   as described in Section 4.e of the Trust Legal Provisions and are
   provided without warranty as described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Example Definition  . . . . . . . . . . . . . . . . . . .   4
   3.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Normative References  . . . . . . . . . . . . . . . . . .   4
     3.2.  Informative References  . . . . . . . . . . . . . . . . .   5
   Appendix A.  Example in SDF JSON format . . . . . . . . . . . . .   5
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .   6
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   (See Abstract for now.)  [I-D.ietf-asdf-sdf] [RELAXNG]

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   The intention is to be able to bidirectionally translate between
   compact and JSON form, without appreciable semantic losses.  This
   will allow viewing SDF in compact form, apply edits if needed, and
   then continuing processing it in JSON form.  As a limitation of this
   approach, it will be difficult to always recreate the order of map
   entries (members of JSON objects) in the JSON form; this order is
   essentially arbitrary as maps (JSON objects) in JSON are unordered.
   (In the long run, it may be useful to define a canonical order in the
   SDF specification or here.)