p:filter 009 (NW)

Tests p:filter with dynamic options and a dynamic selection.

Test nw-filter-009.xml is expected to pass.

The pipeline


<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" xmlns:xs="http://www.w3.org/2001/XMLSchema" version="3.0">
   <p:output port="result"/>
   <p:option name="selection" as="xs:string?"/>
   <p:variable name="eq" select="'='"/>
   <p:identity>
      <p:with-input>
         <book>
            <chapter>Hello, world.</chapter>
         </book>
      </p:with-input>
   </p:identity>
   <p:filter select="/book/*[local-name(.) {$eq} '{$selection}']"/>
   <p:wrap-sequence wrapper="result"/>
</p:declare-step>
MorganaXProc passing

Options

$Q{}selection

select = 'chapter'

Schematron validation


<s:schema xmlns="http://www.w3.org/1999/xhtml" xmlns:s="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
   <s:ns prefix="c" uri="http://www.w3.org/ns/xproc-step"/>
   <s:pattern>
      <s:rule context="/*">
         <s:assert test="self::result">The result root is not result.</s:assert>
         <s:assert test="chapter">There is no chapter child.</s:assert>
      </s:rule>
   </s:pattern>
</s:schema>

Revision history

13 May 2024, Norm Tovey-Walsh

Fixed test to reflect the step XPath context. (Expressions evaluated in the context of a step don’t have access to variables in the pipeline.)

08 May 2024, Norm Tovey-Walsh

Test p:filter