@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl:  <http://www.w3.org/2002/07/owl#> .
@prefix xsd:  <http://www.w3.org/2001/XMLSchema#> .
@prefix dct:  <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ci:   <https://privatealpha.com/ontology/content-inventory/1#> .
@prefix tfo:  <https://privatealpha.com/ontology/transformation/1#> .
@prefix xf:   <tag:makethingsmakesense.com,2020:transform/> .

xf:prefix a tfo:Parameter ;
  skos:prefLabel "Prefix"@en ;
  rdfs:comment "A compact prefix declaration of the form prefix:url"@en ;
  dct:identifier "prefix"^^xsd:token ;
  rdfs:range xsd:token .

xf:xpath a tfo:Parameter ;
  skos:prefLabel "XPath"@en ;
  rdfs:comment "An XPath expression"@en ;
  dct:identifier "xpath"^^xsd:token ;
  owl:cardinality 1 ;
  rdfs:range xsd:string .

xf:reindent a tfo:Parameter ;
  skos:prefLabel "Reindent"@en ;
  rdfs:comment "Reindent the XML tree"@en ;
  dct:identifier "reindent"^^xsd:token ;
  tfo:default true ;
  owl:cardinality 1 ;
  rdfs:range xsd:boolean .

xf:subtree a tfo:Transform ;
  skos:prefLabel "Subtree"@en ;
  rdfs:comment "Isolate an X(HT)ML node using XPath."@en ;
  tfo:implementation <urn:x-ruby:RDF::SAK::Transform::XPath> ;
  tfo:accepts "application/xml"^^tfo:content-type ;
  tfo:returns "application/xml"^^tfo:content-type ;
  tfo:parameter xf:xpath, xf:prefix, xf:reindent ;
  tfo:parameter-list ( xf:xpath xf:prefix xf:reindent ) .

xf:cleanup a tfo:Transform ;
  skos:prefLabel "Cleanup"@en ;
  rdfs:comment "Apply cleanup.xsl to the input."@en ;
  tfo:implementation <file:example/cleanup.xsl> ;
  tfo:accepts "application/xml"^^tfo:content-type ;
  tfo:returns "application/xml"^^tfo:content-type .

<urn:uuid:78e6d8ce-a88a-4be0-8bfa-079136945816> a tfo:Partial ;
  tfo:transform xf:subtree ;
  xf:xpath "//html:main[1]"^^xsd:string ;
  xf:prefix "html:http://www.w3.org/1999/xhtml"^^xsd:token .

<urn:uuid:4498eef5-1ca6-4034-937a-d50033dd6693> a tfo:Application ;
  tfo:input <ni:///sha-256;0GHHmDtxh9CRZttXdr-cX78u72auS2P-O6tDXxvz2kU> ;
  tfo:output <ni:///sha-256;_BbLbNSZl0TcQcjz-v3qF5fa5VL11rdha7c24K44pTc> ;
  tfo:transform xf:subtree ;
  xf:xpath "//html:main[1]"^^xsd:string ;
  xf:prefix "html:http://www.w3.org/1999/xhtml"^^xsd:token .