RE: [xsl] Retrieve External String XML Data as Object

[<A.J.Bull@xxxxxxxx>]

John, did you ever come up with a solution for this?  I have a similar
challenge.

In the stylesheet, I can get access to a string that's supposed to be a
node-set.  When I try to convert the string into a node-set, I'm getting what
I think is a flat text-node and I don't know how to fix it.

In the stylesheet, there's a node by the name of "RecipInstituteNum" which
contains the following:

	<NewDataSet>
	  <InstituteData>
	    <InstitutionID>ID</InstitutionID>
	    <Institute>INSTITUTE</Institute>
	    <Institut_Standard_Name>SOMESTANDARDNAME</Institut_Standard_Name>
	    <Institution_Location>SOMELOCATION</Institution_Location>
	    <Country_Code>COMECOUNTRY</Country_Code>
	  </InstituteData>
	</NewDataSet>

...but as far as I can make out, the stylesheet sees "RecipInstituteNum" as a
text node so that when I try something like:

	<xsl:value-of
select="./RecipInstituteNum/NewDataSet/InstituteData/InstituteID"/>

...I get nothing.  As a work around, I've tried using msxsl:node-set but am
getting a "Cannot convert the operand to 'Result tree fragment'" error and am
having a hard time deciphering Michael's wisdom, so I decided to use msxsl
scripting like below, hoping that the XmlDocument returned would be
intelligible to the stylesheet:

	<msxsl:script language="VB" implements-prefix="user">
	    <![CDATA[
		Public Shared Function TransformToNodeset(ByVal arg As String) As
XmlDocument
	        Dim reader As XmlTextReader = New XmlTextReader(arg,
XmlNodeType.Document, Nothing)
	        Dim doc As New System.Xml.XmlDocument
	        doc.Load(reader)
	        Return doc
	    End Function
	   ]]>
	  </msxsl:script>

Now, when I try to access RecipInstituteNum like in the following:

	<xsl:value-of select="user:TransformToNodeset(./RecipInstituteNum)"/>

... I get (what I think is) a flat text node:

	IDINSTITUTESOMESTANDARDNAMESOMELOCATIONSOMECOUNTRY

Any advice?  Thanks!

Tony




-----Original Message-----
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: RE: [xsl] Retrieve External String XML Data as Object

You write a URIResolver (under Java JAXP) or XmlResolver (under .NET) that
intercepts the URI and returns an object that the XSLT processor can handle,
for example (under JAXP) a StreamSource wrapping a StringReader that holds
the lexical XML.

Michael Kay
http://www.saxonica.com/


> -----Original Message-----
> From: John [mailto:john-xsl-list@xxxxxxxx]
> Sent: 27 June 2005 21:09
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] Retrieve External String XML Data as Object
>
> I have a data source that is only available through APIs, not through
> URLs or files.  I can represent this external data as XML,
> but how can I
> make this data available to my XSL?  The document() function seems to
> require the first parameter be an URL, and the node-set
> extensions don't
> seem to handle strings (at least not the Microsoft node-set
> extensions).
>
> Where custom:GetData() basically returns some XML:
>
> return( "<root><node>some text</node></root>" );
>
> I have tried:
>
> <xsl:variable name="extdata" select="msxsl:node-set(
> custom:GetData())" />
> <xsl:value-of select="$extdata/root/node/text()" />
>
> which gives 'cannot convert the operand to result tree fragment'.
>
> I have also tried:
>
> <xsl:variable name="extdata" select="document( custom:GetData())" />
> <xsl:value-of select="$extdata/root/node/text()" />
>
> Which gives no output.  Do I have to make the data URL-accessible, or
> how can I get this XML into my XSLT as an object instead of a string?
> Should I convert the string to some other type of object before
> returning it to the XSL?  Of course I would prefer to avoid
> extensions
> if possible.  Hopefully there is something like document()
> that works on
> strings instead of URLs?

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