roqet − Rasqal RDF parser utility |
roqet [OPTIONS] <query-URI> [base-URI] |
roqet example.rdql roqet -q x.rdql http://example.org/base/ roqet -i sparql -o xml http://example.org/query.rq |
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 available. |
−h, −−help |
Show a summary of the options. |
−f, −−format FORMAT |
Set the graph query result output FORMAT to ’ntriples’ (N-Triples, default), ’rdfxml’ (RDF/XML) or ’rss-1.0’ (RSS 1.0, also an RDF/XML syntax). |
The list of formats depends on what libraptor(3) was built with. −i, −−input LANGUAGE Set the input query LANGUAGE to one of ’rdql’ (RDF Data Query Language, default) and ’sparql’ (SPARQL Query Language for RDF). The list of supported languages is given in the help summary given by −h. |
−o, −−output FORMAT |
Set the variable bindings query result output FORMAT to ’simple’ for a simpel text format (default) or ’xml’ for the SPARQL variable bindings XML result format. |
−c, −−count |
Only count the triples and produce no other output. |
−d, −−dump-query |
Print a debugging dump of the constructed query. |
−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. |
RDQL RDF Data Query Language, HP Labs, http://www.w3.org/Submission/2004/SUBM-RDQL-20040109/ |
librasqal(3),rasqal-config(1),libraptor(3) |
Dave Beckett |
Copyright 2002-2005 Dave Beckett, Institute for Learning and Research Technology, University of Bristol