This is a static archive of the previous Open Grid Forum Redmine content management system saved from host redmine.ogf.org file /boards/15/topics/45 at Thu, 03 Nov 2022 15:41:39 GMT Implicit alignment of model group - Public Comments Archive - Open Grid Forum

Implicit alignment of model group

Added by Michael Beckerle about 9 years ago

Alignment - for model group, should implicit alignment be greatest of the alignments of children, or least common multiple?

Use of 'greatest' may be a holdover from some earlier version of the spec where alignment values were constrained to be powers of 2. In that case greatest is guaranteed to be the same as least-common-multiple.

There is no such constraint on the value of the alignment property, so taking greatest alignment of the children is not conservative. It can result in incorrect alignment.

Suggest change 'greatest' behavior to 'least common multiple'.


Replies (6)

RE: Implicit alignment of model group - Added by Steve Hanson about 9 years ago

Because of the possibility of an initiator on a structure, inferring the alignment of a structure from its children is flawed. Suggest that implicit alignment of complex element, sequence and choice is always '1'.

Action 239 - RE: Implicit alignment of model group - Added by Michael Beckerle almost 9 years ago

This and another public comment about alignment are to be considered as workgroup action 239

Resolved - Action 239 - RE: Implicit alignment of model group - Added by Michael Beckerle almost 9 years ago

Agreed the implicit alignment of a model group is 1. Language about greatest alignments of children are all dropped.

Resolved: Implicit alignment of model group - Added by Steve Hanson over 8 years ago

New errata 4.6 in experience document 1.

DONE - RE: Implicit alignment of model group - Added by Michael Beckerle over 8 years ago

change in draft-gwdrp-dfdl-v1.0.4-r05.docx

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This is a static archive of the previous Open Grid Forum Redmine content management system saved from host redmine.ogf.org file /boards/15/topics/45 at Thu, 03 Nov 2022 15:41:46 GMT