Re: Sibling in the Pattern(match)

"Dongling Ding" <dling61@xxxxxxxxx> wrote in message
news:20031124022747.86939.qmail@xxxxxxxxxxxxxxxxxxxxxxxxxx
> Hi,
>
> I want to perform a filering out transformation to a
> source file. I copy most things, but leave out specfic
> parts.
>
> The left out part can be done like this:
>
> <xsl:template match="execluded-nodes">
> "do nothing"
> </xsl:template>
>
> <xsl:template match="child::Member[@name ='acc1']"/>
>
> There is a problem with this approach. It seems like
> you only can specify "child" or "attribute" in the
> match pattern.
>
> What can I do if I want to execlude all the nodes
> having the same level as a selected nodel?

There is no restriction on the axis that can be used within *predicates* of
the match pattern. The only restriction in the predicates (in XSLT 1.0) is
that no variable references are allowed.

Therefore, you can specify the restricting condition like this:

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

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

 <xsl:strip-space elements="*"/>

  <xsl:template match="@* | node()">
    <xsl:copy>
      <xsl:apply-templates select="@* | node()"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="*[not(preceding-sibling::*)]">
    <xsl:copy>
      <xsl:apply-templates select="@* | node()"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="*[preceding-sibling::*]"/>
</xsl:stylesheet>

When this transformation is applied on the following source.xml:

<a>
  <b/>
  <c/>
  <d/>
</a>

the wanted result is produced:

<a>
   <b/>
</a>

In case the condition contains a reference to an xsl:variable or an
xsl:param, then this condition cannot be specified as part of the match
pattern. I such a case one can test for the condition within the code of the
template and do nothing if the condition is not satisfied -- this can be
accomplished using an xsl:if


Hope this helped.


=====
Cheers,

Dimitre Novatchev.
http://fxsl.sourceforge.net/ -- the home of FXSL




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