A predicate is used to filter a selection by converting the contents to a
boolean value.
Your selection is //communication/email, which translates to
/descendant-or-self::node()/communication/email.
Alone this will return all email elements with a communication element as
parent.
Adding the predicate [emailaddress] specifies that you only want email nodes
with an emailaddress node as a child. emailaddress will evaluate to true if
there is an emailaddress child element of the selected node.
the predicate [//communication2[emailaddress2]] evaluates to true when there
exists a communication2 element with a child emailaddress2 element anywhere in
the document.
the predicate [emailaddress or //communication2[emailaddress2]] returns true
when either of the two conditions described above are true.
It looks like you really want the union of all communication/email and
communication2/emailaddress2 nodes.
<xsl:for-each select="//communication/email[emailaddress] |
//communication2/emailaddress2">
Good luck,
Josh
-----Original Message-----
From: owner-xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
[mailto:owner-xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com]On Behalf Of Bert
Sent: Tuesday, February 10, 2004 12:29 PM
To: Xsl-List
Subject: [xsl] 2 Predicates in 1 for-each, possible?
Hello,
Allow me to ask a question about 2 predicates in 1 for-each.
I have this xml-file:
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="persons01.xsl"?>
<root>
<organisation>
<communication>
<email>
<emailaddress>e-mail(_at_)bert(_dot_)nl(1)</emailaddress>
</email>
</communication>
<communication2>
<emailaddress2>e-mail(_at_)bert(_dot_)nl(2)</emailaddress2>
</communication2>
</organisation>
<organisation>
<communication>
<email>
<emailaddress>e-mail(_at_)you(_dot_)nl(1)</emailaddress>
</email>
</communication>
<communication2>
<emailaddress2>e-mail(_at_)you(_dot_)nl(2)</emailaddress2>
</communication2>
</organisation>
</root>
I use this stylesheet to collect some information:
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="/">
<document>
<xsl:for-each select="//communication/email[emailaddress or
//communication2[emailaddress2]]">
<xsl:sort select="."/>
<xsl:value-of select="."/>
<xsl:if test="position() != last()">,
</xsl:if>
</xsl:for-each>
</document>
</xsl:template>
</xsl:stylesheet>
I expected to get the following result:
e-mail(_at_)bert(_dot_)nl(1), e-mail(_at_)bert(_dot_)nl(2),
e-mail(_at_)you(_dot_)nl(1), e-mail(_at_)you(_dot_)nl(2)
But what I get is this:
e-mail(_at_)bert(_dot_)nl(1) , e-mail(_at_)you(_dot_)nl(1)
It is obvious there is something wrong in my for-each-statement, but what?
Any help is this is welcome.
Kind regards,
Bert
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