Mike Beckerle created DAFFODIL-2221:
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Summary: Ability to compute CRC, checksums, parity fields. -
related to layering?
Key: DAFFODIL-2221
URL: https://issues.apache.org/jira/browse/DAFFODIL-2221
Project: Daffodil
Issue Type: New Feature
Components: DFDL Language, Front End
Affects Versions: 2.4.0
Reporter: Mike Beckerle
Fix For: 3.0.0
A DFDL language extension has been requested allowing data to be validated, and
unparsed that contains fields computed based on representation of other
elements/groups. E.g., checksums, or CRC codes, or parity elements.
Seems closely related to the layering features added to Daffodil as an
experimental DFDL extension feature, and proposed for inclusion in DFDL v2.0
version of the standard.
But it's not exactly the same, as there needs to be a way to refer to the
layer, and obtain a value from the layer when parsing and when unparsing.
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