Example #1
0
print "Redland storage created\n";
$model = librdf_new_model($world, $storage, '');
print "Redland model created\n";
$parser = librdf_new_parser($world, 'rdfxml', 'application/rdf+xml', null);
print "Redland parser created\n";
$uri = librdf_new_uri($world, 'file:../data/dc.rdf');
print "Parsing...\n";
librdf_parser_parse_into_model($parser, $uri, $uri, $model);
print "Done...\n";
librdf_free_uri($uri);
librdf_free_parser($parser);
$query = librdf_new_query($world, 'sparql', null, "PREFIX dc: <http://purl.org/dc/elements/1.1/> SELECT ?a ?c ?d WHERE { ?a dc:title ?c . OPTIONAL { ?a dc:related ?d } }", null);
print "Querying for dc:titles:\n";
$results = librdf_model_query_execute($model, $query);
$count = 1;
while ($results && !librdf_query_results_finished($results)) {
    print "result {$count}: {\n";
    for ($i = 0; $i < librdf_query_results_get_bindings_count($results); $i++) {
        $val = librdf_query_results_get_binding_value($results, $i);
        if ($val) {
            $nval = librdf_node_to_string($val);
        } else {
            $nval = '(unbound)';
        }
        print "  " . librdf_query_results_get_binding_name($results, $i) . "=" . $nval . "\n";
    }
    print "}\n";
    librdf_query_results_next($results);
    $count++;
}
if ($results) {
Example #2
0
 /**
  * Return whether the iterator is still valid.
  *
  * @return  boolean     Whether the iterator is valid
  * @access  public
  */
 public function valid()
 {
     if ($this->isvalid and !librdf_query_results_finished($this->query_results)) {
         return true;
     } else {
         return false;
     }
 }