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CentOS 7.0 - man page for roqet (centos section 1)

roqet(1)										 roqet(1)

       roqet - Rasqal RDF query utility

       roqet [OPTIONS] <query-URI> [base-URI]
       roqet [OPTIONS]-e query-string [base-URI]
       roqet [OPTIONS]-p sparql-protocol-service-URI [-e query-string ] [base-URI]

       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.

       roqet  uses  the usual GNU command line syntax, with long options starting with two dashes
       (`-') if supported by the getopt_long function.	Otherwise  only  the  short  options  are

       -e, --exec QUERY
	      Execute  the  query  in  the argument QUERY instead of reading the query from a URI
	      (when -e / --exec is not given).

       -i, --input LANGUAGE
	      Set the input query LANGUAGE to one  of  the  supported  languages  which  includes
	      'sparql'	(SPARQL  Query	Language  for RDF, default), 'sparql11' and 'laqrs'.  The
	      full list of supported languages and subsets is given in the help summary with  the
	      -h / --help option.

       -p, --protocol SERVICE-URI
	      Call the SPARQL HTTP protocol SERVICE-URI to execute the query instead of executing
	      it inside the Rasqal query engine locally.

       -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, 'rdfxml' and 'turtle' for RDF syntax formats, and 'json' for	a
	      JSON version of the results.

	      For  RDF	graph  results, the values of FORMAT are 'ntriples' (N-Triples, default),
	      'rdfxml-abbrev'  (RDF/XML  Abbreviated),	'rdfxml'  (RDF/XML),  'turtle'	(Turtle),
	      'json'  (RDF/JSON resource centric), 'json-triples' (RDF/JSON triples) or 'rss-1.0'
	      (RSS 1.0, also an RDF/XML syntax).

	      The exact list of formats depends on what libraptor2(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 'none' (default), 'debug',
	      'structure' or 'sparql'

       -D, --data URI
	      Add RDF data source URI (not a named graph).  If no data	sources  are  given,  the
	      query itself must point to the data such as via SPARQL FROM uri statements.

       -E, --ignore-errors
	      Do not print error messages and do not exit with a non-0 status.

       -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.

       -F, --format NAME
	      Set the data source format name for subsequent data graphs called with -D /  --data
	      or  -G  / --named.  The default if this is not specified is for the query engine to
	      guess.  The name is a Raptor parser name.

       -G, --named URI
	      Add RDF data source URI (named graph)

       -h, --help
	      Show a summary of the options.

       -n, --dryrun
	      Prepare the query but do not execute it.

       -q, --quiet
	      No extra information messages.

       -s, --source URI
	      Add RDF data source URI (named graph) 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, --warnings LEVEL
	      Set  the	warning  LEVEL	in  the range 0 (do not warn about anything) to 100 (show
	      every warning). The Rasqal default is in the middle (50).

	      roqet sparql-query-file.rq

       Run a SPARQL query contained in the local file sparql-query-file.rq.  The data used  would
       be described in FROM statements in the query file.

	      roqet -q -i sparql http://example.org/sparql-query.rq

       Run a SPARQL query that is in the web at URI http://example.org/sparql-query.rq without an
       extra messages (quiet, -q).

	      roqet -q query-file.rq http://example.org/base/

       Run an query (default languge SPARQL) from a local file query-file.rq but using	base  URI
       http://example.org/base/ to resolve any relative URIs.

	      roqet -q -i sparql -r xml http://example.org/sparql-query.rq

       Run a SPARQL query that is in the web at URI http://example.org/sparql-query.rq and format
       the results in the SPARQL Query Results XML format with no extra messages.

	      roqet -i sparql -e 'SELECT * WHERE { ?s ?p ?o }' -D stuff.rdf

       Run a SPARQL query given on the command line against data in the file stuff.rdf.  The type
       of the file will be guessed and likely is of format RDF/XML.

       SPARQL Query Language for RDF, Eric Prud'hommeaux and Andy Seaborne (eds), W3C Recommenda-
       tion,   15   January    2008.	 http://www.w3.org/TR/2008/REC-rdf-sparql-query-20080115/

       SPARQL  Query  Results  XML Format, Jeen Broekstra and Dave Beckett (eds), W3C Recommenda-
       tion,   15   January   2008.	http://www.w3.org/TR/2008/REC-rdf-sparql-XMLres-20080115/


       Dave Beckett - http://www.dajobe.org/ <http://www.dajobe.org/>

					    2011-06-11					 roqet(1)

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