TRACKER3-ENDPOINT(1) Tracker manual TRACKER3-ENDPOINT(1)
NAME
tracker3-endpoint - Create a SPARQL endpoint
SYNOPSIS
tracker3 endpoint [--dbus-service | -b] <service_name>
[--database-path | -d] <database_path>
[[--ontology | -o] <ontology_name> |
[--ontology-path | -p] <ontology_path>]
[--http-port] <port>
[--loopback]
[[--system | --session]]
DESCRIPTION
This command allows creating SPARQL endpoints. The endpoint will be
able to handle SPARQL select and update queries, and notify about
changes in it.
The endpoint is exported via DBus, accessible through the given
service_name, either using it in a SERVICE clause, or by creating a
dedicated bus-based SPARQL connection.
When creating a database, the ontology_name (or alternatively, a
ontology_path) must be provided in order to generate the database. If
ontology_name is used, the ontology must exist in
$datadir/tracker/ontologies
Users should be careful about the --http-port option, consider using it
only combined with the --loopback option.
The database itself will be stored according to database_path.
OPTIONS
-b, --dbus-service=<service_name>
Service name to use on the endpoint.
-d, --database-path=<database_path>
The path where the database will be stored.
-o, --ontology
The name of an ontology in $datadir/tracker/ontologies to use on
the constructed database.
-p, --ontology-path
Full path to an ontology to use on the constructed database.
--session
Use the session bus. This is the default.
--system
Use the system bus.
-l, --list
List all SPARQL endpoints available in DBus
--http-port
Creates a HTTP endpoint that listens in the specified port
--loopback
Allows only HTTP connections in the loopback device. Only effective
with HTTP endpoints.
EXAMPLES
Export a Nepomuk endpoint with the org.example.Example1 bus name.
$ tracker3 endpoint -b org.example.Example1 -o nepomuk -d /tmp/example1
Access this endpoint with the tracker3-sparql(1) subcommand.
$ tracker3 sparql --dbus-service org.example.Example1 -q "
SELECT ?s ?o
WHERE {
?u a ?o
}"
Export a Nepomuk endpoint via HTTP.
$ tracker3 endpoint --http-port 8080 -o nepomuk --loopback
Access this endpoint via HTTP.
$ tracker3 sparql --remote-service http://127.0.0.1:8080/sparql -q "
SELECT ?u {
?u a rdfs:Resource
}"
SEE ALSO
tracker3-sparql(1),
https://www.w3.org/TR/sparql11-query/
3.4.2 12/06/2022 TRACKER3-ENDPOINT(1)
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