Definition and Usage
The <xsl:key> element defines a key. This element is used with the key() function.
Syntax
<xsl:key name="name" match="pattern" use="expression"/>
Example
Suppose you have an xml file called persons.xml:
<persons>
<person name="Tarzan" id="050676"/>
<person name="Donald" id="070754"/>
<person name="Dolly" id="231256"/>
</persons>
You can define a key in the .xsl file like this:
<xsl:key name="personreg" match="person" use="@id"/>
To find the person with id value "050676" you can write:
<xsl:apply-templates select="key('personreg','050676')"/>
Tips and Notes
<xsl:key> is a top level element, and must appear as a child node of the <xsl:stylesheet> element.
[ May 16, 2002: Message edited by: Anitha Lingam ]
