Altova MobileTogether Designer

Altova extension functions can be used in XPath/XQuery expressions. They provide additional functionality to the functionality that is available in the standard library of XPath, XQuery, and XSLT functions.

•In order to distinguish Altova extension functions from functions in the standard library, Altova extension functions are named in this documentation with a suffix of [altova:]. For example: add-years-to-date [altova:].

•When using Altova extension functions in your XPath/XQuery expressions, however, you must use the function without any prefix or suffix, just as you would use any standard XPath/XQuery function. Use an Altova extension like this: add-years-to-date(xs:date("2014-01-15"), 10).

Usage of Altova extension functions

In order to use Altova extension functions, you must declare the Altova extension functions namespace (first highlight in code listing below) and then use the extension functions so that they are resolved as belonging to this namespace (see second highlight). The example below uses the Altova extension function named age.

<xsl:stylesheet version="2.0"

xmlns:xsl="http://www.w3.org/1999/XSL/Transform"

xmlns:xs="http://www.w3.org/2001/XMLSchema"

xmlns:fn="http://www.w3.org/2005/xpath-functions"

xmlns:altova="http://www.altova.com/xslt-extensions">

<xsl:output method="text" encoding="ISO-8859-1"/>

<xsl:template match="Persons">

<xsl:for-each select="Person">

  <xsl:value-of select="concat(Name, ': ')"/>

  <xsl:value-of select="altova:age(xs:date(BirthDate))"/>

  <xsl:value-of select="' years&#x0A;'"/>

</xsl:for-each>

</xsl:template>

</xsl:stylesheet>

XPath/XQuery functions

XPath/XQuery functions can be used both in XPath expressions as well as in XQuery expressions:

•Date/Time

•Geolocation

•Image-related

•Numeric

•Sequence

•String