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mapping-webapi-official.rml.ttl
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mapping-webapi-official.rml.ttl
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#
# RML mapping rules for https://datapiloten.be/bluebike/availabilities.geojson
# (c) Dylan Van Assche (2021)
# IDLab - Ghent University - imec
#
@prefix rml: <http://semweb.mmlab.be/ns/rml#> .
@prefix rr: <http://www.w3.org/ns/r2rml#> .
@prefix rmlt: <http://semweb.mmlab.be/ns/rml-target#> .
@prefix rdfs: <https://www.w3.org/2000/01/rdf-schema#> .
@prefix comp: <http://semweb.mmlab.be/ns/rml-compression#> .
@prefix formats: <http://www.w3.org/ns/formats/> .
@prefix ex: <http://example.com/> .
@prefix ql: <http://semweb.mmlab.be/ns/ql#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix td: <https://www.w3.org/2019/wot/td#> .
@prefix htv: <http://www.w3.org/2011/http#> .
@prefix hctl: <https://www.w3.org/2019/wot/hypermedia#> .
@prefix schema: <http://schema.org/> .
@prefix gtfs: <http://vocab.gtfs.org/terms#> .
@prefix geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix fnml: <http://semweb.mmlab.be/ns/fnml#> .
@prefix fno: <https://w3id.org/function/ontology#> .
@prefix grel: <http://users.ugent.be/~bjdmeest/function/grel.ttl#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix tree: <https://w3id.org/tree#> .
@prefix ldes: <https://w3id.org/ldes#> .
@prefix idlab: <http://example.com/idlab/function/> .
@base <http://example.org/rules/> .
# Github will serve GZip compressed files if available.
# However, you have to provide the regular file as well.
<#TargetDump> a rmlt:LogicalTarget;
rmlt:target [ a void:Dataset;
void:dataDump <file://./public/bluebike.ttl>;
];
rmlt:serialization formats:Turtle;
.
<#TargetDumpGzip> a rmlt:LogicalTarget;
rmlt:target [ a void:Dataset;
void:dataDump <file://./public/bluebike.ttl.gz>;
];
rmlt:serialization formats:Turtle;
rmlt:compression comp:gzip;
.
<#TDForm> a td:Form;
# URL
# See private security file
# Content type
hctl:forContentType "application/json";
# Read only
hctl:hasOperationType td:readproperty;
# Set HTTP method and headers
htv:methodName "GET";
htv:headers ([
htv:fieldName "User-Agent";
htv:fieldValue "IDLab - Ghent University - imec (RMLMapper)";
]);
.
<#WoTWebAPISource> a td:PropertyAffordance;
td:hasForm <#TDForm>;
.
<#WoTWebAPI> a td:Thing;
td:hasPropertyAffordance <#WoTWebResource>;
.
# TREE view
<#ViewTriplesMap> a rr:TriplesMap;
rml:logicalSource [
rml:source "ldes.json";
rml:referenceFormulation ql:JSONPath;
rml:iterator "$";
];
rr:subjectMap[
rml:reference "ldes.iri";
rr:termType rr:IRI;
rml:logicalTarget <#TargetDump>;
rml:logicalTarget <#TargetDumpGzip>;
];
# LDES retention policy
rr:predicateObjectMap [
rr:predicate ldes:retentionPolicy;
rr:objectMap [
fnml:functionValue [
rr:predicateObjectMap [
rr:predicate fno:executes ;
rr:objectMap [ rr:constant grel:array_join ]
];
rr:predicateObjectMap [
rr:predicate grel:p_array_a ;
rr:objectMap [ rml:reference "ldes.iri" ]
];
rr:predicateObjectMap [
rr:predicate grel:p_array_a ;
rr:objectMap [ rr:constant "#retention"; ]
];
rr:predicateObjectMap [
rr:predicate grel:p_string_sep ;
rr:objectMap [ rr:constant ""; ]
];
];
rr:termType rr:IRI;
];
];
.
# LDES RetentionPolicy
<#RetentionPolicyTriplesMap> a rr:TriplesMap;
rml:logicalSource [
rml:source "ldes.json";
rml:referenceFormulation ql:JSONPath;
rml:iterator "$";
];
rr:subjectMap[
fnml:functionValue [
rr:predicateObjectMap [
rr:predicate fno:executes ;
rr:objectMap [ rr:constant grel:array_join ]
];
rr:predicateObjectMap [
rr:predicate grel:p_array_a ;
rr:objectMap [ rml:reference "ldes.iri" ]
];
rr:predicateObjectMap [
rr:predicate grel:p_array_a ;
rr:objectMap [ rr:constant "#retention"; ]
];
];
rr:termType rr:IRI;
rml:logicalTarget <#TargetDump>;
rml:logicalTarget <#TargetDumpGzip>;
];
# rdf:type
rr:predicateObjectMap [
rr:predicate rdf:type;
rr:objectMap [ rml:reference "ldes.retentionPolicy.type"; rr:termType rr:IRI; ];
];
rr:predicateObjectMap [
rr:predicate ldes:amount;
rr:objectMap [ rml:reference "ldes.retentionPolicy.amount"; rr:datatype xsd:integer; ];
];
rr:predicateObjectMap [
rr:predicate ldes:timestampPath;
rr:object dcterms:created;
];
rr:predicateObjectMap [
rr:predicate ldes:versionOfPath;
rr:object dcterms:isVersionOf;
];
.
<#TreeTriplesMap> a rr:TriplesMap;
rml:logicalSource [
rml:source "ldes.json";
rml:referenceFormulation ql:JSONPath;
rml:iterator "$"
];
# LDES stream
rr:subjectMap[
fnml:functionValue [
rr:predicateObjectMap [
rr:predicate fno:executes ;
rr:objectMap [ rr:constant grel:array_join ]
];
rr:predicateObjectMap [
rr:predicate grel:p_array_a ;
rr:objectMap [ rml:reference "ldes.iri" ]
];
rr:predicateObjectMap [
rr:predicate grel:p_array_a ;
rr:objectMap [ rr:constant "#eventstream"; ]
];
];
rr:termType rr:IRI;
rr:class ldes:EventStream;
rml:logicalTarget <#TargetDump>;
rml:logicalTarget <#TargetDumpGzip>;
];
# TREE member
rr:predicateObjectMap [
rr:predicate tree:member;
rr:objectMap [ a rr:ObjectMap;
rr:parentTriplesMap <#StationsTriplesMap>;
rr:termType rr:IRI;
];
];
# TREE view
rr:predicateObjectMap [
rr:predicate tree:view;
rr:objectMap [ a rr:ObjectMap;
rml:reference "ldes.iri";
rr:termType rr:IRI;
];
];
.
<#StationsTriplesMap> a rr:TriplesMap;
rml:logicalSource [ a rml:LogicalSource;
rml:source <#WoTWebAPISource>;
rml:referenceFormulation ql:JSONPath;
rml:iterator "$.[*]";
];
# Unique IRI generation: $stationId#$generatedAtTime
rr:subjectMap [
fnml:functionValue [
rr:predicateObjectMap [
rr:predicate fno:executes ;
rr:objectMap [ rr:constant grel:array_join ]
];
rr:predicateObjectMap [
rr:predicate grel:p_array_a ;
rr:objectMap [ rr:template "http://irail.be/stations/bluebike/{name}" ]
];
rr:predicateObjectMap [
rr:predicate grel:p_array_a ;
rr:objectMap [
fnml:functionValue [
rr:predicateObjectMap [
rr:predicate fno:executes ;
rr:objectMap [ rr:constant grel:array_join ]
];
rr:predicateObjectMap [
rr:predicate grel:p_array_a ;
rr:objectMap [ rr:constant "#" ]
];
rr:predicateObjectMap [
rr:predicate grel:p_array_a ;
rr:objectMap [ rml:reference "last_seen" ]
];
];
];
];
];
rr:termType rr:IRI;
rml:logicalTarget <#TargetDump>;
rml:logicalTarget <#TargetDumpGzip>;
];
# rdf:type
rr:predicateObjectMap [
rr:predicate rdf:type;
rr:objectMap [
fnml:functionValue [
rr:predicateObjectMap [
rr:predicate fno:executes ;
rr:objectMap [ rr:constant grel:controls_if ]
];
rr:predicateObjectMap [
rr:predicate grel:bool_b ;
rr:objectMap [
fnml:functionValue [
rr:predicateObjectMap [
rr:predicate fno:executes;
rr:objectMap [ rr:constant idlab:equal ];
];
rr:predicateObjectMap [
rr:predicate grel:valueParameter;
rr:objectMap [ rml:reference "type" ];
];
rr:predicateObjectMap [
rr:predicate grel:valueParameter2;
rr:objectMap [ rr:constant "1" ];
];
];
rr:datatype xsd:boolean
];
];
rr:predicateObjectMap [
rr:predicate grel:any_true ;
rr:objectMap [ rr:constant "https://schema.org/ParkingFacility"; rr:termType rr:IRI ]
];
rr:predicateObjectMap [
rr:predicate grel:any_false ;
rr:objectMap [ rr:constant "https://schema.org/ParkingFacilitySmartLock"; rr:termType rr:IRI ]
];
];
rr:termType rr:IRI;
];
];
# BlueBike station: name
rr:predicateObjectMap [
rr:predicate schema:name ;
rr:objectMap [ rml:reference "name"; rr:datatype xsd:string; ]
];
# BlueBike station: available bicycles
rr:predicateObjectMap [
rr:predicate ex:bikesAvailable ;
rr:objectMap [ rml:reference "bikes_available"; rr:datatype xsd:integer; ]
];
# BlueBike station: maximum capacity
# TODO: needs custom FnO to take the sum of bikes_available and bikes_in_use
# rr:predicateObjectMap [
# rr:predicate ex:capacity ;
# rr:objectMap [ rml:reference ""; rr:datatype xsd:integer; ]
# ];
# BlueBike station: available docks = bikes_in_use
rr:predicateObjectMap [
rr:predicate ex:docksAvailable ;
rr:objectMap [ rml:reference "bikes_in_use"; rr:datatype xsd:integer; ]
];
# Geo location
rr:predicateObjectMap [
rr:predicate geo:latitude ;
rr:objectMap [ rml:reference "latitude"; rr:datatype xsd:float; ]
];
rr:predicateObjectMap [
rr:predicate geo:longitude ;
rr:objectMap [ rml:reference "longitude"; rr:datatype xsd:float; ]
];
# Versioning
rr:predicateObjectMap [
rr:predicate dcterms:created ;
rr:objectMap [ rml:reference "last_seen"; rr:dataType xsd:dateTime; ]
];
rr:predicateObjectMap [
rr:predicate dcterms:isVersionOf ;
rr:objectMap [ rr:template "http://irail.be/stations/bluebike/{name}"; rr:termType rr:IRI; ]
];
.