[DFDL-WG] Proposed feature: lookup tables via simple type unions

[Mike Beckerle]

A write up of the proposal, which we are prototyping in Daffodil, is here:

https://opensource.ncsa.illinois.edu/confluence/display/DFDL/Enumerations+and+Range+Tables+via+Simple+Type+Unions

This is needed by a number of data formats we are working with where there
are large enumerations having as many as 2000 members. Often these
enumerations are a mixture where single values correspond to some
enumerated strings, and ranges of  values correspond to others.

Using expressions to translate representation integers into strings is
infeasible, as no constant-time case-statement-like construct is available
in DFDL.

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>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.ogf.org/pipermail/dfdl-wg/attachments/20170222/dee4979b/attachment.html>