From ca32b189529ffc7c1d42af85f005dea54189218f Mon Sep 17 00:00:00 2001 From: David Robillard Date: Sat, 20 Jan 2007 02:35:34 +0000 Subject: Added Machina. Moved some Jack and RDF functionality down to RAUL from Ingen, for use by Machina. git-svn-id: http://svn.drobilla.net/lad/raul@263 a436a847-0d15-0410-975c-d299462d15a1 --- src/RDFQuery.cpp | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 src/RDFQuery.cpp (limited to 'src/RDFQuery.cpp') diff --git a/src/RDFQuery.cpp b/src/RDFQuery.cpp new file mode 100644 index 0000000..f92ca89 --- /dev/null +++ b/src/RDFQuery.cpp @@ -0,0 +1,71 @@ +/* This file is part of Ingen. Copyright (C) 2006 Dave Robillard. + * + * Ingen is free software; you can redistribute it and/or modify it under the + * terms of the GNU General Public License as published by the Free Software + * Foundation; either version 2 of the License, or (at your option) any later + * version. + * + * Ingen is distributed in the hope that it will be useful, but WITHOUT ANY + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include +#include +#include "raul/RDFQuery.h" + + +RDFQuery::Results +RDFQuery::run(const Glib::ustring base_uri_str) const +{ + Results result; + + rasqal_init(); + + rasqal_query *rq = rasqal_new_query("sparql", NULL); + + raptor_uri* base_uri = NULL; + if (base_uri_str != "") + base_uri = raptor_new_uri((const unsigned char*)base_uri_str.c_str()); + rasqal_query_prepare(rq, (unsigned char*)_query.c_str(), base_uri); + + rasqal_query_results* results = rasqal_query_execute(rq); + assert(results); + + while (!rasqal_query_results_finished(results)) { + + Bindings bindings; + + for (int i=0; i < rasqal_query_results_get_bindings_count(results); i++) { + const unsigned char* rname = rasqal_query_results_get_binding_name(results, i); + rasqal_literal* rvalue = rasqal_query_results_get_binding_value(results, i); + Glib::ustring name((const char*)rname); + + const unsigned char* str = rasqal_literal_as_string(rvalue); + + if (str) { + Glib::ustring value((const char*)str); + bindings.insert(std::make_pair(name, value)); + } + } + + result.push_back(bindings); + rasqal_query_results_next(results); + } + + rasqal_free_query_results(results); + rasqal_free_query(rq); + + if (base_uri) + raptor_free_uri(base_uri); + + rasqal_finish(); + + return result; +} + -- cgit v1.2.1