devices.rq

PREFIX rdf:             <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX sosa:            <http://www.w3.org/ns/sosa/>
PREFIX rdfs:            <http://www.w3.org/2000/01/rdf-schema#>
PREFIX xs:              <http://www.w3.org/2001/XMLSchema#>
PREFIX default-context: <https://uri.etsi.org/ngsi-ld/default-context/>
PREFIX ex:              <https://example.org/>
PREFIX ldes:            <https://w3id.org/ldes#>
PREFIX ngsi-ld:         <https://uri.etsi.org/ngsi-ld/>
PREFIX prov:            <http://www.w3.org/ns/prov#>
PREFIX rdf:             <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX terms:           <http://purl.org/dc/terms/>
PREFIX tree:            <https://w3id.org/tree#>
PREFIX vocab:           <https://purl.org/geojson/vocab#>
PREFIX geo:             <http://www.opengis.net/ont/geosparql#>
PREFIX geoc:            <https://opengis.net/def/function/geosparql/custom#>
CONSTRUCT {
    ?devices rdf:type default-context:Device.
    ?devices terms:isVersionOf ?devicesversion.
    ?devices prov:generatedAtTime ?generattime.
    ?devices geo:asWKT ?wktl.
    ?devices ex:test  ?test
} WHERE {
    ?devices rdf:type default-context:Device.
    ?devices terms:isVersionOf ?devicesversion.
    ?devices prov:generatedAtTime ?generattime.
    ?devices ngsi-ld:location ?location .
    ?location ngsi-ld:hasValue ?value.
    ?value rdf:type ?type.
    ?value vocab:coordinates (?x ?y).

    BIND(SUBSTR(STR(?x), 1, 15) AS ?lon)
    BIND(SUBSTR(STR(?y), 1, 15) AS ?lat)
    BIND(CONCAT("POINT(", STR(?lon), " ", STR(?lat), ")") AS ?wkt)
    BIND(STRDT(?wkt, geo:wktLiteral) AS ?wktl)
    BIND (geoc:lastCoordinate(?wkt) as ?test)
}