RelaxNG schema validation - wildcard attributes and ID types
When a RelaxNG schema uses a wildcard for attributes together with ID/IDREF/IDREFS attributes (cp. schema example in the end), the validation of the schema fails using oNVDL integrated by OxygenXML with the error message that the there are conflicting ID types. The reason has been discussed earlier, e.g. http://tech.groups.yahoo.com/group/rng-users/message/751 The question is, does the tool have to act this way due to a specification? The most relevant spec seems to be: http://www.oasis-open.org/committees/relax-ng/compatibility.html#id But although I might misinterpret http://www.oasis-open.org/committees/relax-ng/compatibility.html#IDAMYYR I would say no. The workaround is to exclude all existing ID typed attributes that appear in the schema from the attribute wildcard For instance in an "any" element part of the example below, the ID has to be excluded: <define name="any"> <zeroOrMore> <choice> <element> <anyName/> <zeroOrMore> <attribute> <anyName> <except> <name ns="urn:example-one">id</name> </except> </anyName> </attribute> </zeroOrMore> <ref name="any"/> </element> <text/> </choice> </zeroOrMore> </define> But what if the test:id attribute should be used in this arbitrary content? Does not "anyAttributes" refer to external attributes as well? It seems strange that only the internal IDs are being checked and why doing this check at all? It is odd to add an exclude to every attribute/anyName of a Schema, whenever a ID type attribute is being added. Curious to hear your opinion on that.. Final a full schema example using arbitrary elements and an ID: <grammar xmlns="http://relaxng.org/ns/structure/1.0" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes" xmlns:test="urn:example-one"> <start> <ref name="root"/> </start> <define name="root"> <element name="test:root"> <ref name="anchor"/> <ref name="any"/> </element> </define> <define name="anchor"> <element name="test:anchor"> <optional> <attribute name="test:id"> <data type="ID"/> </attribute> </optional> <text/> </element> </define> <define name="any"> <zeroOrMore> <choice> <element> <anyName/> <zeroOrMore> <attribute> <anyName/> </attribute> </zeroOrMore> <ref name="any"/> </element> <text/> </choice> </zeroOrMore> </define> </grammar> Regards, Svante
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