roqet(1)roqet(1)NAMEroqet - Rasqal RDF query utility
SYNOPSISroqet [OPTIONS] <query-URI> [base-URI]
roqet [OPTIONS]--exec query-string [base-URI]
EXAMPLEroqet example.rdql
roqet-q -i rdql x.rdql http://example.org/base/
roqet-i sparql -r xml http://example.org/query.rq
DESCRIPTION
The roqet utility allows querying of RDF content using the Rasqal RDF
query library, printing the results in variable bindings, RDF graph or
boolean format. The query is read from query-URI and the optional
base-URI is used as the base URI of the query if present.
OPTIONSroqet uses the usual GNU command line syntax, with long options start‐
ing with two dashes (`-') if supported by the getopt_long function.
Otherwise only the short options are available.
-h, --help
Show a summary of the options. -i, --input LANGUAGE Set the
input query LANGUAGE to one of'sparql' (SPARQL Query Language
for RDF, default) or 'rdql' (RDF Data Query Language). The
list of supported languages is given in the help summary given
by -h.
-r, --results FORMAT
Set the query results format.
For variable bindings, the values of FORMAT vary upon what
Rasqal supports but include 'simple' for a simple text format
(default), 'xml' for the SPARQL Query Results XML format, 'xml-
v2' for the version of the 2005-05-27 working draft, and 'json'
for a JSON version of the results. The older xml formats may be
removed in future releases.
For RDF graph results, the values of FORMAT are 'ntriples' (N-
Triples, default), 'rdfxml-abbrev' (RDF/XML Abbreviated),
'rdfxml' (RDF/XML), or 'rss-1.0' (RSS 1.0, also an RDF/XML syn‐
tax).
The exact list of formats depends on what libraptor(3) was built
with but is given correct in the usage message with -h.
-c, --count
Only count the triples and produce no other output.
-d, --dump-query FORMAT
Print the parsed query out in a given FORMAT one of 'debug',
'structure' or 'sparql'
-e, --exec QUERY
Execute the query in the argument QUERY instead of reading the
query from a URI.
-f, --feature NAME(=VALUE)
Set query feature NAME to the VALUE or integer 1 if omitted.
The known features can be shown with -f help or --feature help.
-n, --dryrun
Prepare the query but do not execute it.
-q, --quiet
No extra information messages.
-s, --source URI
Query against RDF data at source URI by adding it to the list of
query data source URIs. FORMAT to 'simple' (default) or 'xml'
(an experimental XML format)
-v, --version
Print the rasqal library version and exit.
-w, --walk-query
Walk the query and display it using the API.
CONFORMING TO
SPARQL Query Language for RDF, Eric Prud'hommeaux and Andy Seaborne
(eds), W3C Candidate Recommendation, 6 April 2006.
http://www.w3.org/TR/2006/CR-rdf-sparql-query-20060406/
⟨http://www.w3.org/TR/2006/CR-rdf-sparql-query-20060406/⟩
SPARQL Query Results XML Format, Jeen Broekstra and Dave Beckett (eds),
W3C Candidate Recommendation, 6 April 2006.
http://www.w3.org/TR/2006/CR-rdf-sparql-XMLres-20060406/
⟨http://www.w3.org/TR/2006/CR-rdf-sparql-XMLres-20060406/⟩
SPARQL Query Results XML Format, Edited by Dave Beckett, W3C Working
Draft, 27 May 2005. Work in progress. http://www.w3.org/TR/2005/WD-
rdf-sparql-XMLres-20050527/ ⟨http://www.w3.org/TR/2005/WD-rdf-sparql-
XMLres-20050527/⟩
SPARQL Variable Binding Results XML Format, Edited by Dave Beckett, W3C
Working Draft, 21 December 2004. Work in progress.
http://www.w3.org/TR/2004/WD-rdf-sparql-XMLres-20041221/
⟨http://www.w3.org/TR/2004/WD-rdf-sparql-XMLres-20041221/⟩
RDQL - A Query Language for RDF, Andy Seaborne, W3C Member Submission 9
January 2004 http://www.w3.org/Submission/2004/SUBM-RDQL-20040109/
⟨http://www.w3.org/Submission/2004/SUBM-RDQL-20040109/⟩
SEE ALSOlibrasqal(3),rasqal-config(1),libraptor(3)CHANGESAUTHOR
Dave Beckett - http://purl.org/net/dajobe/
⟨http://purl.org/net/dajobe/⟩
2007-02-17 roqet(1)
