rdf-rdf-002

The pipeline

<p:declare-step xmlns:cx="http://xmlcalabash.com/ns/extensions" xmlns:p="http://www.w3.org/ns/xproc" name="main" version="3.0" expand-text="false">
   <p:import href="https://xmlcalabash.com/ext/library/rdf.xpl"/>
   <p:output port="result"/>
   <p:identity>
      <p:with-input>
         <p:inline content-type="application/rdf+xml">
            <rdf:RDF xmlns:j.0="http://purl.org/dc/terms/" xmlns:j.1="http://xmlns.com/foaf/0.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
               <rdf:Description rdf:about="https://spec.xproc.org/3.0/xproc/">
                  <j.0:title>XProc 3.0: An XML Pipeline Language</j.0:title>
                  <j.0:date rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2022-09-12</j.0:date>
                  <j.0:type rdf:resource="http://purl.org/dc/dcmitype/Text"/>
                  <j.0:hasVersion>3.0</j.0:hasVersion>
                  <j.0:isPartOf>
                     <rdf:Description rdf:about="https://xproc.org/">
                        <j.0:title>XProc</j.0:title>
                        <j.0:type rdf:resource="http://purl.org/dc/dcmitype/Collection"/>
                     </rdf:Description>
                  </j.0:isPartOf>
                  <j.0:contributor>
                     <rdf:Description rdf:nodeID="A0">
                        <j.1:name>Norman Walsh</j.1:name>
                        <j.1:homepage rdf:resource="https://nwalsh.com/"/>
                        <j.1:weblog rdf:resource="https://so.nwalsh.com/"/>
                     </rdf:Description>
                  </j.0:contributor>
                  <j.0:contributor>
                     <rdf:Description rdf:nodeID="A1">
                        <j.1:name>Achim Berndzen</j.1:name>
                     </rdf:Description>
                  </j.0:contributor>
                  <j.0:contributor>
                     <rdf:Description rdf:nodeID="A2">
                        <j.1:name>Gerrit Imsieke</j.1:name>
                     </rdf:Description>
                  </j.0:contributor>
                  <j.0:contributor>
                     <rdf:Description rdf:nodeID="A3">
                        <j.1:name>Erik Siegel</j.1:name>
                     </rdf:Description>
                  </j.0:contributor>
               </rdf:Description>
               <rdf:Description rdf:about="https://spec.xproc.org/3.0/steps/">
                  <j.0:title>XProc 3.0: Standard Step Library</j.0:title>
                  <j.0:date rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2022-09-12</j.0:date>
                  <j.0:type rdf:resource="http://purl.org/dc/dcmitype/Text"/>
                  <j.0:hasVersion>3.0</j.0:hasVersion>
                  <j.0:isPartOf rdf:resource="https://xproc.org/"/>
                  <j.0:contributor rdf:nodeID="A0"/>
                  <j.0:contributor rdf:nodeID="A1"/>
                  <j.0:contributor rdf:nodeID="A2"/>
                  <j.0:contributor rdf:nodeID="A3"/>
               </rdf:Description>
            </rdf:RDF>
         </p:inline>
      </p:with-input>
   </p:identity>
   <p:cast-content-type name="first" content-type="application/rdf+xml"/>
   <p:identity>
      <p:with-input>
         <p:document content-type="application/rdf+xml" href="../documents/sample1.rdf"/>
      </p:with-input>
   </p:identity>
   <p:cast-content-type name="second" content-type="application/rdf+xml"/>
   <p:load content-type="application/rdf+xml" href="../documents/sample1.rdf"/>
   <p:cast-content-type name="third" content-type="application/rdf+xml"/>
   <p:wrap-sequence wrapper="wrapper">
      <p:with-input pipe="@first @second @third"/>
   </p:wrap-sequence>
</p:declare-step>