Re: [Gestalt-users] Bug in namespace-uri-for-prefix() ?

[Florent G. <dar...@ya...>]

Colin Adams wrote:

  Hi Colin,

> From: Florent Georges

> >   I've worked a little bit on XSLT Unit, and I found a
> > bug (I think) related to namespace-uri-for-prefix().  I
> > updated my copy of Gexslt today.  Here is the test case,
> > with the

> BTW, you may not know that EiffelStudio 5.7 is now out of
> beta - in which case you should probably upgrade

  A few months ago, I installed the following version:
EiffelStudio 5 (5.7.62804 GPL Edition).  I don't know if it
is interesting to upgrade?  Note I only need it for Gexslt.

> > as="namespace()*", but namespace() is not a valid KindTest.

> Hm. Maybe I should check the spec. - just because I don't
> support the namespace axis, may not necessarily mean the
> kinfd test is invalid.

  No, it is a well-known limitation of XPath 2.0, IMHO.  The
KindTest production rule is defined as:

    [54] KindTest ::= DocumentTest
                      | ElementTest
                      | AttributeTest
                      | SchemaElementTest
                      | SchemaAttributeTest
                      | PITest
                      | CommentTest
                      | TextTest
                      | AnyKindTest

which means, more or less, with all possible variations:

    [54] KindTest ::= "document-node(...)"
                      | "element(...)"
                      | "attribute(...)"
                      | "schema-element(...)"
                      | "schema-attribute(...)"
                      | "processing-instruction(...)"
                      | "comment()"
                      | "text()"
                      | "node()"

  So you have a KindTest for each node type (even two for
elements and attributes), but for namespace nodes.  BTW, you
don't support the namespace *axis*, but you support
namespace *nodes*, if I'm right.  For example xsl:namespace
works as expected, and produces a namespace node.

> OK. I will look into it.
> I assume it also fails with a production build?

  Yes.

  Mmh, I maybe spook too early for namespace-uri-for-prefix().
Actually it doesn't seems to be the problem, but xsl:namespace
does.  If you replace xsl:namespace by xsl:attribute, all
runs fine:

(drkm)[113] ~/xslt/tests$ cat copy-namespaces.xsl
<xsl:stylesheet
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:my="my:copy-namespaces.xsl"
    exclude-result-prefixes="my"
    version="2.0">

  <xsl:output omit-xml-declaration="yes"/>

  <xsl:template match="root">
    <root>
      <xsl:sequence select="my:copy-namespaces(.)"/>
    </root>
  </xsl:template>

  <!--
      Not usefull version that creates attributes of the
      form prefix="the://namespace/uri".
  -->
  <xsl:function name="my:copy-namespaces" as="node()*">
    <xsl:param name="context" as="element()"/>
    <xsl:for-each select="in-scope-prefixes($context)">
      <xsl:attribute name="{ . }" select="
          namespace-uri-for-prefix(., $context)"/>
    </xsl:for-each>
  </xsl:function>

</xsl:stylesheet>

(drkm)[114] ~/xslt/tests$ cat copy-namespaces.xml
<root xmlns:ns="my:namespace"/>

(drkm)[115] ~/xslt/tests$ gexslt copy-namespaces.xsl \
                                 copy-namespaces.xml
<root ns="my:namespace" xml="http://www.w3.org/XML/1998/namespace"/>

(drkm)[116] ~/xslt/tests$ 

  Regards,

--drkm



















	

	
		
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