RE: [xsl] Accessing the main document from a document()

["Michael Kay" <mike@xxxxxxxxxxxx>]

First, declare a global variable

<xsl:variable name="main" select="/"/>

Then you can use filter expressions such as

$main/data/value[@name=current()/@name]

when the context node is a parameter.

If the main document is large, then using keys is more efficient. In XSLT
2.0:

<xsl:key name="k" match="data/value" use="@name"/>

then (again from a parameter element) key('k', @name, $main) to do the join.

In 1.0 you have to circumlocute:

<xsl:variable name="keyval" select="@name"/>
<xsl:for-each select="$main">
  ... select="key('k', $keyval)"
</

because key() always selects in the current document.

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

> -----Original Message-----
> From: Hans H|bner [mailto:hans.huebner@xxxxxxxxx]
> Sent: 19 August 2005 13:20
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] Accessing the main document from a document()
>
> Hi,
>
> I am trying to write an XSL stylesheet that displays the data of the
> document it is attached to under the control of a second document.
> This second document describes the formatting and data types of the
> data in the main document.  It also defines the order in which the
> fields from the main document are displayed.
>
> Main document:
>
> <?xml-stylesheet type="text/xsl" href="stylesheet.xsl" ?>
> <data device-type="foo">
>  <value name="a">blah</value>
>  <value name="b">blub</value>
> </data>
>
> Formatting document:
>
> <definitions>
>  <device type="foo">
>   <parameter name="b">... formatting instructions for field
> b..</parameter>
>   <parameter name="a">... formatting instructions for field
> a...</parameter>
>  </device>
>  <device ... more devices>
>  </device>
> </definitions>
>
> From the style sheet, I am now selecting the right device definition
> and iterate through it's parameters, generating output on the way.
> For each of the parameters, I now need access to its value as set in
> the main document.  How do I do that?
>
> Thanks in advance!
> Hans