Re: Scope of xml source, includes, and inline xml

So let me pose a simple example.
The following xml document is our main document, which I still don't
have the terminology for.  It might look like:

<data>
  <foo>1</foo>
  <foo>3</foo>
  <foo>5</foo>
  <foo>2</foo>
  <foo>99</foo>
</data>

Lets say our XSLT creates a global variable "foo_test" and it imports
an external data source which looks like:

<foo_test>
  <foo>3</foo>
  <foo>99</foo>
</test_foo>

Will the following expression work:
<xsl:apply-templates select="data/foo = $foo_test//foo"/>

Resulting in a match on:
foo = 3; and foo = 4


Now, let do the reverse of this and match on all $foot_test foo
elements so we have:
<xsl:apply-templates select="$foo_test//foo"  mode="my_external_foo"/>

And we have the template:
<xsl:template match="foo" mode="my_external_foo">
  <!-- AT THIS POINT.. 
        HOW DO WE REFER BACK TO MAIN XML SOURCE??? -->

<!-- mabye, but isn't /data/foo out of context??? -->
    <xsl:for-each select="/data/foo">
        <xsl:if test=".=current()/.">
            <!-- I'M ASSUMING WE NEVER MAKE IT HERE -->
        </xsl:if>
    </xsl:for-each>
</xsl:template>


On Thu, 31 Mar 2005 20:55:11 +0100, Michael Kay <mike@xxxxxxxxxxxx> wrote:
> > I am discovering such... I think a better approach is to import the
> > xml into a variable at the parent level, so into
> > parent_xslt_document.xsl
> > Would you agree?
> 
> Yes, I would always use global variables for this kind of thing. Or external
> "lookup.xml" files, read using the document() function.
> >
> > Also, since we are on the subject:
> > Is there such thing as cross-walking xml sources?  Recently I tempted
> > to match all (as an example) AAA elements with a value of matching all
> > BBB element values where BBB xml Source is not the same as AAA's xml
> > source.  AAA would be part of the original xml source (not sure how
> > you refer to that) where BBB is either an inline XML source "user data
> > element" or imported into the stylesheet into a variable, or passed in
> > as a parameter.
> 
> I can't work out exactly what process you are describing, but it's certainly
> possible to join, compare, or merge data from multiple sources in XSLT.
> 
> Michael Kay
> http://www.saxonica.com/