@prefix rr: <http://www.w3.org/ns/r2rml#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix ex: <http://example.com/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rml: <http://semweb.mmlab.be/ns/rml#> .
@prefix ql: <http://semweb.mmlab.be/ns/ql#> .
@prefix d2rq: <http://www.wiwiss.fu-berlin.de/suhl/bizer/D2RQ/0.1#> .

@base <http://example.com/base/> .

<TriplesMap1>
  a rr:TriplesMap;

  rml:logicalSource [
    rml:source <#DB_source>;
    rr:sqlVersion rr:SQL2008;
    rml:query  """
      SELECT EMP.*, (CASE job
        WHEN 'CLERK' THEN 'general-office'
        WHEN 'NIGHTGUARD' THEN 'security'
        WHEN 'ENGINEER' THEN 'engineering'
      END) AS ROLE FROM EMP
    """ ;
    rml:referenceFormulation ql:CSV
   ];
	
    rr:subjectMap [ rr:template "http://data.example.com/employee/{empno}" ];
    
    rr:predicateObjectMap [
        rr:predicate ex:role;
        rr:objectMap [ rr:template "http://data.example.com/roles/{ROLE}" ];
    ].

<#DB_source> a d2rq:Database;
  d2rq:jdbcDSN "CONNECTIONDSN";
  d2rq:jdbcDriver "com.mysql.cj.jdbc.Driver";
  d2rq:username "root";
  d2rq:password "" .