context: URL Protocol

The context: URL protocol enables you to access variables from XSL mappings during the runtime of an X4 process. This variables can be defined within the process with a Variable component and must be placed in a process before the XSL mapping component. The document stored in a context variable can be retrieved from the XSL mapping using the document() function.

URL Structure

The URL must follow the pattern (slashes after the URL handler may cause problems):

HTML/XML

context:VariableName

An XSL mapping using this URL protocol cannot be executed in the transformation preview oft the Mapping Editor.

Example

A sample process containing the following XSL mapping provides a variable Var that has been defined using a Variable component. This variable stores an XML document that will be retrieved from the XSL mapping using the document() function, and will be buffered in an XSL variable DocVar. Its nodes can be selected via XPath without limitation.

HTML/XML

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:output encoding="UTF-8" method="xml" version="1.0"/>
   <xsl:template match="/">
      <result>
         <xsl:variable select="document('context:Var')" name="DocVar"/>
         <xsl:value-of select="$DocVar/child::ElemName"/>
      </result>
   </xsl:template>
</xsl:stylesheet>