SPARQL Endpoint

Extractor, allows the user to extract RDF triples from a SPARQL endpoint using a CONSTRUCT query.

Endpoint
URL of the SPARQL endpoint to be queried
SPARQL CONSTRUCT query
Query for extraction of triples from the endpoint

Characteristics

ID
e-sparql
Type
extractor
Inputs
RDF single graph - configuration
Outputs
RDF single graph
Look in pipeline
SPARQL Endpoint
Sample pipeline
First
Second

The SPARQL Endpoint component queries a remote SPARQL endpoint using a SPARQL CONSTRUCT query. It can be configured at runtime using RDF configuration, which can be generated by another component.

Runtime configuration

Below you can see sample runtime configuration for the component, which includes specification of default graph IRIs. You can also import a sample pipeline. Note that RDF blank nodes are not allowed in runtime configurations.

@prefix se: <http://plugins.linkedpipes.com/ontology/e-sparqlEndpoint#> .

<http://localhost/config> a se:Configuration ;
    se:query "CONSTRUCT { ?s ?p ?o } WHERE { ?s ?p ?o}" ;
    se:endpoint <http://linked.opendata.cz/sparql> ;
    se:defaultGraph <http://comsode.eu/resource/dataset/COMSODE_D3.2> ;
    se:defaultGraph <http://linked.opendata.cz/resource/dataset/coi.cz/kontroly> .