Re: Preserve ancestors/discard children

John Robert Gardner <jrgardn@xxxxxxxxx> wrote:


>For the following XML, I'm trying to "shave off" all the <ul>'s, each of
>of which has only a "class="L"" attribute to distinguish its <li>'s.  In
>other I only want to have everything from <li class="T"> UPWARD,
>with _none_ of the sub-ul's therein.

This can be done by adding just one line to your stylesheet:

<xsl:template select="li[@class='T']//*" precedence="1"/>

It suppresses all element descendants of any <li class="T"> element.
The precedence value of 1 guarantees that this rule cannot be overridden
by rules with default precedence.

The rule just does nothing, thus making every trace of the matching
element disappear from the output. Text children of the <li class="T">
itself are not matched, and processed in a regular way.

There are some caveats in this approach, e.g. you should care about
not to override this rule by incautious use of <xsl:for-each>. But in
regular situations, when most of the tree navigation is done by calls
to <xsl:apply-templates>, this should work.

Regards,

Nikolai



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