1TRACKER3-ENDPOINT(1) Tracker manual TRACKER3-ENDPOINT(1)
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6 tracker3-endpoint - Create a SPARQL endpoint
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9 tracker3 endpoint [--dbus-service | -b] <service_name>
10 [--database-path | -d] <database_path>
11 [[--ontology | -o] <ontology_name> |
12 [--ontology-path | -p] <ontology_path>]
13 [--http-port] <port>
14 [--loopback]
15 [[--system | --session]]
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18 This command allows creating SPARQL endpoints. The endpoint will be
19 able to handle SPARQL select and update queries, and notify about
20 changes in it.
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22 The endpoint is exported via DBus, accessible through the given
23 service_name, either using it in a SERVICE clause, or by creating a
24 dedicated bus-based SPARQL connection.
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26 When creating a database, the ontology_name (or alternatively, a
27 ontology_path) must be provided in order to generate the database. If
28 ontology_name is used, the ontology must exist in
29 $datadir/tracker/ontologies
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31 Users should be careful about the --http-port option, consider using it
32 only combined with the --loopback option.
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34 The database itself will be stored according to database_path.
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37 -b, --dbus-service=<service_name>
38 Service name to use on the endpoint.
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40 -d, --database-path=<database_path>
41 The path where the database will be stored.
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43 -o, --ontology
44 The name of an ontology in $datadir/tracker/ontologies to use on
45 the constructed database.
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47 -p, --ontology-path
48 Full path to an ontology to use on the constructed database.
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50 --session
51 Use the session bus. This is the default.
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53 --system
54 Use the system bus.
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56 -l, --list
57 List all SPARQL endpoints available in DBus
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59 --http-port
60 Creates a HTTP endpoint that listens in the specified port
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62 --loopback
63 Allows only HTTP connections in the loopback device. Only effective
64 with HTTP endpoints.
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67 Export a Nepomuk endpoint with the org.example.Example1 bus name.
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69 $ tracker3 endpoint -b org.example.Example1 -o nepomuk -d /tmp/example1
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71 Access this endpoint with the tracker3-sparql(1) subcommand.
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73 $ tracker3 sparql --dbus-service org.example.Example1 -q "
74 SELECT ?s ?o
75 WHERE {
76 ?u a ?o
77 }"
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79 Export a Nepomuk endpoint via HTTP.
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81 $ tracker3 endpoint --http-port 8080 -o nepomuk --loopback
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83 Access this endpoint via HTTP.
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85 $ tracker3 sparql --remote-service http://127.0.0.1:8080/sparql -q "
86 SELECT ?u {
87 ?u a rdfs:Resource
88 }"
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91 tracker3-sparql(1),
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93 https://www.w3.org/TR/sparql11-query/
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97 3.3.2 07/07/2022 TRACKER3-ENDPOINT(1)