4S-QUERY(1J) | 1J (4store) | 4S-QUERY(1J) |
4s-query
— Run
SPARQL queries on a 4store storage backend
4s-query |
kb-name [-f format]
[-O optimisation-level]
[-I insert-mode]
[-r ] [-s
soft-limit] [-b
base-URI] [-e ]
[-P ] [query]
|
If [query] is omitted then 4s-query
goes
into interactive mode, suitable for trying queries from the command
line.
-P
enables programmatic interactive mode,
suitable for interfacing with processes via stdin and stdout. Queries are
sent as UTF-8 bytes, terminated with "#EOQ" on a line of it's own,
results are returned, ending with "#EOR". Interacting with 4store
in this way is more efficient than using the SPARQL protocol, but
non-standard.
4s-import(1), 4s-httpd(1), 4s-backend(1), 4s-delete-model(1)
4s-query
implements the SPARQL Query
Language specification (aka. SPARQL/Query 1.0) and the SPARQL Result Format
specification (aka. SPARQL/Results 1.0).
Default graph support is no normally enabled, the --default-graph turns it on, as does specifying FROM <default:> in the query. Data loaded with
$ 4s-import kb --add
-m
default: uri/filename
will be added to the default graph.
$ 4s-query
-f
sparql demo 'SELECT * WHERE { ?s ?p ?s } LIMIT 10'
Return 10 random triples from the knowledgebase "demo" in the SPARQL XML result format.
$ 4s-query
-P
demo
< query.rq
Run the query in query.rq and output the result to stdout
2009-07-08 | 4store |