Node Functions

Overview

Namespace urn:NodeFunctions
Available Since Zynk Workflow 2.1.4

This article will outline how to implement the node functions that we have made available in Zynk.

You can make use of the node functions by including the following declaration in your XSLT document:

<xsl:stylesheet 
    version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:NodeFunctions="urn:NodeFunctions"
    exclude-result-prefixes="NodeFunctions">

    <!-- transformation -->

</xsl:stylesheet>

Functions

• Select(XPathNodeIterator context, string xpath)
  • XPathNodeIterator context - The node to run the xpath expression against. This would typically be the current node, '.'.
  • string xpath - The XPath query to return the desired node value.

Example

Input

<?xml version="1.0" encoding="utf-8"?>
<Company>
    <Products>
        <Product>
            <Sku>ABC</Sku>
            <Supplier>Bob</Supplier>
            <Priority>2</Priority>
        </Product>
        <Product>
            <Sku>ABC</Sku>
            <Supplier>Jon</Supplier>
            <Priority>3</Priority>
        </Product>
        <Product>
            <Sku>ABC</Sku>
            <Supplier>Sam</Supplier>
            <Priority>1</Priority>
        </Product>
        <Product>
            <Sku>ZXY</Sku>
            <Supplier>Sam</Supplier>
            <Priority>1</Priority>
        </Product>
        <Product>
            <Sku>123</Sku>
            <Supplier>Bob</Supplier>
            <Priority>2</Priority>
        </Product>
        <Product>
            <Sku>123</Sku>
            <Supplier>Sam</Supplier>
            <Priority>1</Priority>
        </Product>
        <Product>
            <Sku>123</Sku>
            <Supplier>Jon</Supplier>
            <Priority>3</Priority>
        </Product>
    </Products>
</Company>

XSLT

<xsl:stylesheet 
    version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:NodeFunctions="urn:NodeFunctions"
    exclude-result-prefixes="NodeFunctions">
    
    <xsl:output indent="yes"/>
    
    <xsl:template match="/Company">
        <SampleOutput>
            <xsl:variable name="DynamicXPath">Products/Product[Priority=1]</xsl:variable>
            <xsl:for-each select="NodeFunctions:Select(., $DynamicXPath)">
                <Priority><xsl:value-of select="concat('[', Priority, '] ', Sku)" /></Priority>
            </xsl:for-each>
        </SampleOutput>
    </xsl:template>
    
</xsl:stylesheet>

Output

<?xml version="1.0" encoding="utf-8"?>
<SampleOutput>
    <Priority>[1] ABC</Priority>
    <Priority>[1] ZXY</Priority>
    <Priority>[1] 123</Priority>
</SampleOutput>