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Bug 4684 - Can sml:keyref refer to an xs:key/unique?
Summary: Can sml:keyref refer to an xs:key/unique?
Status: RESOLVED WONTFIX
Alias: None
Product: SML
Classification: Unclassified
Component: Core (show other bugs)
Version: unspecified
Hardware: PC Windows XP
: P1 normal
Target Milestone: LC
Assignee: Kirk Wilson
QA Contact: SML Working Group discussion list
URL:
Whiteboard:
Keywords:
Depends on: 4995 5130
Blocks:
  Show dependency tree / graph
 
Reported: 2007-06-21 17:26 UTC by Sandy Gao
Modified: 2007-10-16 20:56 UTC (History)
0 users

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Description Sandy Gao 2007-06-21 17:26:58 UTC 
For example, is the following allowed? Or should sml:keyref only be able to refer to sml:key/unique?

<xs:element name="e" type="t">
 <xs:annotation>
  <xs:appinfo>
   <sml:keyref name="myRef refer="tns:myKey">
    ...
   </sml:keyref>
  </xs:appinfo>
 </xs:annotation>

 <xs:key name="myKey">
  ...
 </xs:key>
</xs:element>
Comment 1 Valentina Popescu 2007-08-28 13:48:15 UTC 
A good scenario for reusing xs:key/unique is in legacy documents; you may want to reuse an existing schema key/unique and refer to it from another document using the sml:keyref element
Comment 2 Valentina Popescu 2007-08-28 14:50:17 UTC 
there are too many unknowns about this one; move target to LC
Comment 3 Kirk Wilson 2007-09-12 12:37:55 UTC 
Recommendation has been proposed to add an optional scope attribute to sml:keyref that implicit contains a deref() and refers to the element in which the xs:key/xs:unique is defined.

See http://lists.w3.org/Archives/Public/public-sml/2007Sep/0077.html for complete proposal
Comment 4 Kirk Wilson 2007-10-04 17:22:51 UTC 
Or does the resolution of 5130 depend on how we choose to resolve this issue?
Comment 5 Kirk Wilson 2007-10-12 14:59:00 UTC 
Revised proposal for discussion at second Redmond F2F
http://lists.w3.org/Archives/Public/public-sml/2007Oct/0083.html
Comment 6 Kumar Pandit 2007-10-16 20:46:21 UTC 
decision at redmond f2f:
We decided to keep SML and XSD id constratints separate. Bug 5130 will marked
editorial so that this can be clarified in the spec.