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https://issues.apache.org/jira/browse/XERCESJ-1507?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13029979#comment-13029979
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Mukul Gandhi commented on XERCESJ-1507:
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I think that "keyref" and "keydata" attributes in your example should have
compatible data types for the purpose of equality test (if you need these for
xs:keyref component). In your case, one is xs:string while the other is list of
strings (i.e xs:string+), which to my opinion are incomparable for the purpose
of xs:keyref component.
I seem to observe that, identity constraints involving simpleType->list work
correctly with Xerces-J, provided the schema types I mentioned as above are
comparable. If you make "keydata" attribute in your example as a list type (for
e.g "keyreftypes" from your example), I seem to find that your example works
fine with Xerces-J.
Therefore it seems to me, that this may not be a valid bug report.
> Identity constraint does not work if field refers to attribute defined as
> simple type of list
> ---------------------------------------------------------------------------------------------
>
> Key: XERCESJ-1507
> URL: https://issues.apache.org/jira/browse/XERCESJ-1507
> Project: Xerces2-J
> Issue Type: Bug
> Components: SAX
> Affects Versions: 2.11.0
> Environment: Windows, Java 1.6
> Reporter: Damir Sulomar
>
> When a keyref field element refers to attribute defined as simple type of
> list the identity constraint does not work. Schema and data below.
> <?xml version="1.0" encoding="utf-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"; >
> <xs:element name="Data">
> <xs:complexType>
> <xs:all>
> <xs:element name="Data1">
> <xs:complexType>
> <xs:attribute name="keydata"
> type="xs:string" use="required"/>
> </xs:complexType>
> </xs:element>
> <xs:element name="Data2">
> <xs:complexType>
> <xs:attribute name="keyref"
> type="keyreftypes" use="required"/>
> </xs:complexType>
> </xs:element>
> </xs:all>
> </xs:complexType>
> <xs:key name="Keys">
> <xs:selector xpath=".//Data1"/>
> <xs:field xpath="@keydata"/>
> </xs:key>
> <xs:keyref name="KeyRefs" refer="Keys">
> <xs:selector xpath=".//Data2"/>
> <xs:field xpath="@keyref"/>
> </xs:keyref>
> </xs:element>
> <xs:simpleType name="keyreftypes">
> <xs:list itemType="xs:string"/>
> </xs:simpleType>
> </xs:schema>
> <?xml version="1.0" encoding="utf-8" ?>
> <Data>
> <Data1 keydata="1"/>
> <Data2 keyref="1"/>
> </Data>
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