essense.rml.ttl

@prefix rr: <http://www.w3.org/ns/r2rml#> .
@prefix td: <https://www.w3.org/2019/wot/td#> .
@prefix wotsec: <https://www.w3.org/2019/wot/security#> .
@prefix htv: <http://www.w3.org/2011/http#> .
@prefix hctl: <https://www.w3.org/2019/wot/hypermedia#> .
@prefix rml: <http://semweb.mmlab.be/ns/rml#> .
@prefix rmlt: <http://semweb.mmlab.be/ns/rml-target#> .
@prefix ql: <http://semweb.mmlab.be/ns/ql#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix ex: <http://example.org/ns/#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix formats: <https://www.w3.org/ns/formats/>.
@prefix void: <http://rdfs.org/ns/void#> .
@prefix sd: <http://www.w3.org/ns/sparql-service-description#> .

# API key in HTTP header
<#WotWebAPISecurity> a wotsec:APIKeySecurityScheme;
  wotsec:in "header";
  wotsec:name "apikey";
.
  
# Access description for HTTP Web API with JSON as data format
<#WoTWebAPISource> a td:PropertyAffordance;
  td:hasForm [
    hctl:hasTarget "http://example.org/trashcans";
    hctl:forContentType "application/json";
    hctl:hasOperationType td:readproperty ;
    htv:methodName "GET";
    htv:headers ([
      htv:fieldName "User-Agent";
      htv:fieldValue "Mapping processor";
    ]);
  ];
.
    
# Link security with access description
<#WoTWebAPI> a td:Thing ;
  td:hasSecurityConfiguration <#WoTWebAPISecurity>;
  td:hasPropertyAffordance <#WoTWebAPISource>;
.

# Targets
<#RDFDumpTarget> a void:Dataset;
  void:dataDump <file:///data/dump.nq>;
.

<#SPARQLUPDATETarget> a sd:Service;
  sd:endpoint  <http://example.com/sparql-update>;
  sd:supportedLanguage sd:SPARQL11Update;
.

# RML TriplesMaps
<#TriplesMap> a rr:TriplesMap;
  rml:logicalSource [ a rml:LogicalSource;
    rml:source <#WoTWebAPI>;
    rml:referenceFormulation ql:JSONPath;
    rml:iterator "$.[*]";
  ];
  rml:logicalTarget [ a rmlt:LogicalTarget;
    rmlt:target <#RDFDumpTarget>;
    rmlt:serialization formats:N-Quads;
  ];
  rml:logicalTarget [ a rmlt:LogicalTarget;
    rmlt:target <#SPARQLUPDATETarget>;
  ];

  rr:subjectMap [
    rr:template "http://example.org/trashcan/{id}"
  ];

  rr:predicateObjectMap [
   rr:predicate ex:fillingLevel;
   rr:objectMap [
     rml:reference "fillingLevel.value";
   ];
  ];

  rr:predicateObjectMap [
    rr:predicate rdf:type;
    rr:objectMap [
      rr:constant ex:Trashcan;
    ];
  ];
.