0004 suggestion

test-cases/README.md

@@ -43,6 +43,7 @@ Some test cases are under discussion, proposed alternatives are noted via a suff
 | 0002   | Function on object, 1 false reference parameter                 | Tests if a false reference parameters is caught                                                                               | CSV         |       TRUE      | student.csv       |
 | 0003   | Function on object, 1 reference parameter, 1 constant parameter | Tests if a function with multiple parameters can be used                                                                      | CSV         |      FALSE      | student.csv       |
 | 0004   | Function on predicate, 1 parameter                              | Tests if a function can be used on a predicate                                                                                | CSV         |      FALSE      | student.csv       |
+| 0004b  | Function on predicate, 1 parameter (replaces 0004)              | Tests if a function can be used on a predicate                                                                                | CSV         |      FALSE      | student.csv       |
 | 0005   | Function on subject, 1 parameter                                | Tests if a function can be used on a subject                                                                                  | CSV         |      FALSE      | student.csv       |
 | 0005   | Function on subject, default termType                           | Tests if the default termType assigned to the output of the function to be correct                                            |             |                 |                   |
 | 0006   | Function on object, the output termType is IRI                  | Tests if the output of the function is assigned the correct termType                                                          |             |                 |                   |

test-cases/RMLFNOTC0004b-CSV/mapping.ttl

@@ -0,0 +1,39 @@
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix ex: <http://example.com/> .
+@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
+@prefix rml: <http://w3id.org/rml/> .
+@prefix fno: <https://w3id.org/function/ontology#> .
+@prefix fns: <http://example.com/functions/> .
+@prefix morph-kgc: <https://github.com/morph-kgc/morph-kgc/function/built-in.ttl#> .
+@prefix grel: <http://users.ugent.be/~bjdmeest/function/grel.ttl#> .
+@prefix idlab-fn: <http://example.com/idlab/function/> .
+
+@base <http://example.com/base/> .
+
+<TriplesMap1>
+    rml:logicalSource [
+        rml:source [ a rml:RelativePathSource;
+          rml:root rml:MappingDirectory;
+          rml:path "student.csv"
+        ];
+        rml:referenceFormulation rml:CSV
+    ];
+    rml:subjectMap [
+        rml:template "http://example.com/{Name}"
+    ];
+    rml:predicateObjectMap [
+        rml:predicateMap [
+            rml:functionExecution <#Execution> ;
+        ];
+        rml:object foaf:name;
+    ] .
+
+<#Execution>
+    rml:function fns:schema ;
+    rml:input
+        [
+            rml:parameter fns:stringParameter ;
+            rml:inputValueMap [
+                rml:reference "Name"
+            ];
+        ] .

test-cases/RMLFNOTC0004b-CSV/output.nq

@@ -0,0 +1 @@
+<http://example.com/Venus> <https://schema.org/Venus> <http://xmlns.com/foaf/0.1/name> .

test-cases/RMLFNOTC0004b-CSV/student.csv

@@ -0,0 +1,2 @@
+Id,Name,Comment,Class
+1,Venus,A&B,A

test-cases/functions.ttl

@@ -65,3 +65,17 @@ fns:stringOutput
     rdfs:label    "output string" ;
     fno:predicate fns:hasStringOutput ;
     fno:type      xsd:string .
+
+fns:schema
+   a                   fno:Function ;
+   fno:name            "schema term generator" ;
+   dcterms:description "The schema term generator function returns a string of the form 'https://schema.org/{stringParameter}'" ;
+   fno:expects         ( fns:stringParameter ) ;
+   fno:returns         ( fns:stringOutput ) .
+
+fns:stringParameter
+    a             fno:Parameter ;
+    fno:name      "input string" ;
+    rdfs:label    "input string" ;
+    fno:predicate fns:hasStringParameter ;
+    fno:type      xsd:string .