Subject: Re: first element of type x in a group
From: Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>
Date: Tue, 21 Aug 2001 17:13:37 -0400
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Ben,
At 03:54 PM 8/21/01, you wrote:
I was wondering if anyone would know how to express the following...
<page>
<command></command>
<info></info>
<field>
<x></x>
<y></y>
</field>
<field>
<x></x>
<y></y>
</field>
</page>
When I am in x i want to figure out if I am in the first <field>.
<xsl:if test="not(parent::field/preceding::field)">
...</xsl:if>
will test true if the parent is not a field or if the parent field has no
field elements preceding it (meaning among the elements that open and close
before it, which doesn't include its ancestors).
"not(../preceding-sibling::field)" is almost the same test, and is
preferable from some points of view. In particular, you should use
preceding-sibling if you know all your field elements will be at the same
level.
Cheers,
Wendell
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Wendell Piez mailto:wapiez@xxxxxxxxxxxxxxxx
Mulberry Technologies, Inc. http://www.mulberrytech.com
17 West Jefferson Street Direct Phone: 301/315-9635
Suite 207 Phone: 301/315-9631
Rockville, MD 20850 Fax: 301/315-8285
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