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RE: Checking for empty values
- To: "'xsl-list at mulberrytech dot com'" <xsl-list at mulberrytech dot com>
- Subject: RE: Checking for empty values
- From: Charles Cantrell <chc at ontario dot com>
- Date: Mon, 17 Jul 2000 13:57:49 -0500
- Reply-To: xsl-list at mulberrytech dot com
In MSXML3, I was able to test for "emptiness" on the following XML file
<?xml version="1.0"?>
<?xml:stylesheet type="text/xsl" href="t.xsl"?>
<books>
<book>
<title>A Title</title>
<author>Semour Basco</author>
</book>
<book>
<title>Lost in Space</title>
<author/>
</book>
</books>
using
<xsl:if test="not(node())">
I expect this test fails if there are comments or pi's.
Charles
-----Original Message-----
From: Madhu Menon [mailto:madhu@asiacontent.com]
Sent: Monday, July 17, 2000 5:22 AM
To: xsl-list@mulberrytech.com
Subject: Checking for empty values
Hello.
Forgive me for asking newbie questions, but it's only because I'm a newbie
:)
I want to have my XSL stylesheet evaluate to see if a tag exists or the
value is blank. How do I do this using <xsl:if> or <xsl:when> ?
For example, take the following schema:
<library>
<book>
<name>Hound of the Baskervilles</name>
<author>Sir Arthur Conan Doyle</author>
</book>
<book>
<name>A Dying man's prayer</name>
</book>
<book>
<name>XSLT Programmer's Reference</name>
<author>Michael Kay</author>
</book>
</library>
In the second record, the <author> data is not available. I want to check
for this (or the tags being empty) and then conditionally produce the
output. What would be the best way to do this?
Thanks for your help.
Madhu
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