Supported Platforms
XSLT Context (Dot) Overview
The current context node changes as an <xsl:apply-templates> instruction traverses the document hierarchy and as an <xsl:for-each> instruction examines each node that matches an XPath expression. All relative node references are relative to the current context node. This node is abbreviated “ .” (read: dot) and can be referred to in XPath expressions, allowing explicit references to the current node.
The following example contains four uses for “.” . The system node is saved in the system variable for use inside the <xsl:for-each> instruction, where the value of “.” will have changed. The for-each select expression uses “.” to mean the value of the name element. The “.” is then used to pull the value of the name element into the <tag> element. The <xsl:if> test then uses “.” to reference the value of the current context node.
<xsl:template match="system">
<xsl:variable name="system" select="."/>
<xsl:for-each select="name-server/name[starts-with(., '10.')]">
<tag><xsl:value-of select="."/></tag>
<xsl:if test=". = '10.1.1.1'">
<match>
<xsl:value-of select="$system/host-name"/>
</match>
</xsl:if>
</xsl:for-each>
</xsl:template>
