UserGuide Storage SPARQL Query

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SPARQL Query Endpoints

You can treat any publicly accessible SPARQL Query endpoint as a read-only store using the SparqlConnector.

Note: If you were looking for documentation on querying a SPARQL endpoint please see Querying with SPARQL

Supported Capabilities

• Load and List Graphs
• SPARQL Query

Creating a Connection

You can create a connection either just by providing the endpoint URI like so:

SparqlConnector sparql = new SparqlConnector(new Uri("http://example.org/sparql"));

Or you can provide a SparqlRemoteEndpoint instance like so:

SparqlRemoteEndpoint endpoint = new SparqlRemoteEndpoint(new Uri("http://example.org/sparql"), "http://default-graph-uri");

SparqlConnector sparql = new SparqlConnector(endpoint);

In both cases there is an overload which takes a SparqlConnectorLoadMethods which determines whether the LoadGraph() method operates by making a CONSTRUCT or a DESCRIBE query, the default is CONSTRUCT