[DFDL-WG] ambiguity - mandatory alignment for text (12.1.2)

[Mike Beckerle]

These two paragraphs contradict each other.


When processing textual data, it is a schema definition error if the
dfdl:alignment and dfdl:alignmentUnits properties are used to specify
alignment that is not a multiple of the encoding-specified mandatory
alignment.

If the data is not aligned to the proper boundary for the encoding when
textual data is processed, then bits are skipped (parsing) or filled from
dfdl:fillByte (unparsing) to achieve the mandatory alignment.


So is it to be SDE (conservative), or just move over to the mandatory
alignment? E.g.,


<xs:sequence dfdl:encoding="utf-8" dfdl:alignment="7"
dfdl:alignmentUnits="bits" dfdl:initiator="hello">....


The alignment property says 7 bits, but the initiator is utf-8 which
requires 8 bits. So we either SDE, or we just add additional alignment bits
to align the initiator text.



Mike Beckerle | OGF DFDL Workgroup Co-Chair | Tresys Technology |
www.tresys.com
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