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Bug 1929 - RQ-141e: Make pattern value be a set of regexes, not one regex
Summary: RQ-141e: Make pattern value be a set of regexes, not one regex
Status: CLOSED FIXED
Alias: None
Product: XML Schema
Classification: Unclassified
Component: Datatypes: XSD Part 2 (show other bugs)
Version: 1.1 only
Hardware: PC Linux
: P2 normal
Target Milestone: ---
Assignee: XML Schema WG
QA Contact: XML Schema comments list
URL:
Whiteboard:
Keywords: resolved
Depends on:
Blocks: 2247 2401
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Reported: 2005-09-01 00:21 UTC by C. M. Sperberg-McQueen
Modified: 2008-03-05 16:09 UTC (History)
0 users

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Description C. M. Sperberg-McQueen 2005-09-01 00:21:32 UTC
This item is a spinoff from the editors' work on RQ-141b.

In the course of fixing an alignment problem between Structures
and Datatypes as regards the enumeration facet, the editors
saw an opportunity for an analogous change to the pattern facet:
make its {value} be a set instead of a single regular expression,
and change the facet merger rules in Structures to perform the
correct set union operation on the facet created in the restriction
step and the pattern facet of the base type.

Since this change is not essential to reconciling Structures
and Datatypes, and since it involves a design choice which ought
to be made by the WG, it has been factored out from the larger
proposal for RQ-141b to make separate consideration easier.
Comment 1 Henry S. Thompson 2005-09-04 14:29:54 UTC
Checked in revised version which I (HST) am happy with, think this is ready to 
go to the WG, all changes tagged with dg="pattern-1929"
Comment 2 C. M. Sperberg-McQueen 2005-09-08 03:47:56 UTC
A proposal for this issue is at 
http://www.w3.org/XML/Group/2004/06/xmlschema-2/datatypes.b1929.20050907.html
and is ready for WG consideration.
Comment 3 Henry S. Thompson 2005-10-20 14:41:35 UTC
Revised proposal available at http://www.w3.org/XML/Group/2004/06/xmlschema-
2/datatypes.b1929.20051020.html, per f2f decisions
Comment 4 Sandy Gao 2005-10-27 16:11:20 UTC
Discussed at 2005-10-21 telecon [1]. An amendment was proposed and accepted by 
the WG.

Resolution: Proposal accepted unanimously as amended.

[1] http://lists.w3.org/Archives/Member/w3c-xml-schema-ig/2005Oct/0019.html
Comment 5 C. M. Sperberg-McQueen 2005-12-17 00:34:48 UTC
A proposal to provide for a single set-valued pattern
facet was approved in September 2005 in Edinburgh.
For reasons not clear from the minutes, it was considered
again and approved again on 21 October.  As of 15 
December, the change has been integrated into the
status-quo version of the document.
Comment 6 Dave Peterson 2008-03-05 16:09:47 UTC
Although no formal request for closure was made, since the reporter also noted
the resolution of this bug over two years ago, I'm marking it closed.