[TASK] Generic commit.
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@ -1069,6 +1069,37 @@ ACTION
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new StrongAccelerationEvent(relatedCar=c1.relatedCar, deltaSpeed=deltaSpeed)
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new StrongAccelerationEvent(relatedCar=c1.relatedCar, deltaSpeed=deltaSpeed)
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\end{lstlisting}
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\end{lstlisting}
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Übersetzt man dies in einen C-SPARQL-Query, so erhält man folgende Abfrage:
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\begin{lstlisting}[label={},caption={}]
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REGISTER STREAM getStronglyAcceleratingCars AS
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PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
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PREFIX f: <http://larkc.eu/csparql/sparql/jena/ext#>
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PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
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PREFIX car: <http://example.org/carSim/carSimulationOntology#>
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CONSTRUCT {
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[] rdf:type car:CarStrongAcceleratingEvent
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; car:relatedCar ?car
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; car:deltaSpeed ?deltaSpeed .
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}
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FROM STREAM <http://example.org/carSim/stream/carStream> [RANGE 5s STEP 1s]
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WHERE {
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?e1 rdf:type car:CarStatusEvent .
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?e1 car:relatedCar ?car .
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?e1 car:speed ?speed1 .
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?e2 rdf:type car:CarStatusEvent .
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?e2 car:relatedCar ?car .
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?e2 car:speed ?speed2 .
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FILTER NOT EXISTS {
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?ex rdf:type car:CarStatusEvent .
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FILTER(f:timestamp(?e1,rdf:type,car:CarStatusEvent) < f:timestamp(?ex,rdf:type,car:CarStatusEvent))
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FILTER(f:timestamp(?ex,rdf:type,car:CarStatusEvent) < f:timestamp(?e2,rdf:type,car:CarStatusEvent))
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}
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BIND(?speed2 - ?speed1 AS ?deltaSpeed)
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FILTER(f:timestamp(?e1,rdf:type,car:CarStatusEvent) < f:timestamp(?e2,rdf:type,car:CarStatusEvent))
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FILTER(?deltaSpeed > 25)
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}
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\end{lstlisting}
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Diese muss nun lediglich als Ereignisdatenstrom an der Engine registriert werden, und kann dann innerhalb von weiteren C-SPARQL-Queries verwendet werden.
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\item Verschleiß der Bremsen durch sehr starke Bremsmanöver
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\item Verschleiß der Bremsen durch sehr starke Bremsmanöver
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\item Verschleiß des Motors durch Fahrt mit überhöhter Motordrehzahl
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\item Verschleiß des Motors durch Fahrt mit überhöhter Motordrehzahl
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