Method

TrackerSparqlConnectionmap_connection

since: 3.3

Declaration [src]

void
tracker_sparql_connection_map_connection (
  TrackerSparqlConnection* connection,
  const gchar* handle_name,
  TrackerSparqlConnection* service_connection
)

Description [src]

Maps a TrackerSparqlConnection onto another through a private:handle_name“ URI.

This can be accessed via the SERVICE SPARQL syntax in queries from connection. E.g.:

tracker_sparql_connection_map_connection (connection,
                                          "other-connection",
                                          other_connection);
SELECT ?u {
  SERVICE <private:other-connection> {
    ?u a rdfs:Resource
  }
}

This is useful to interrelate data from multiple TrackerSparqlConnection instances maintained by the same process, without creating a public endpoint for service_connection.

connection may only be a TrackerSparqlConnection created via tracker_sparql_connection_new() and tracker_sparql_connection_new_async().

Available since: 3.3

Parameters

handle_name

Type: const gchar*

Handle name for service_connection.

The data is owned by the caller of the function.
The value is a NUL terminated UTF-8 string.
service_connection

Type: TrackerSparqlConnection

A TrackerSparqlConnection to use from connection.

The data is owned by the caller of the function.