public function EasyRdf_Sparql_Client::listNamedGraphs in Zircon Profile 8
Same name and namespace in other branches
- 8.0 vendor/easyrdf/easyrdf/lib/EasyRdf/Sparql/Client.php \EasyRdf_Sparql_Client::listNamedGraphs()
Get a list of named graphs from a SPARQL 1.1 endpoint
Performs a SELECT query to get a list of the named graphs
Parameters
string $limit Optional limit to the number of results:
Return value
array Array of EasyRdf_Resource objects for each named graph
File
- vendor/
easyrdf/ easyrdf/ lib/ EasyRdf/ Sparql/ Client.php, line 152
Class
- EasyRdf_Sparql_Client
- Class for making SPARQL queries using the SPARQL 1.1 Protocol
Code
public function listNamedGraphs($limit = null) {
$query = "SELECT DISTINCT ?g WHERE {GRAPH ?g {?s ?p ?o}}";
if (!is_null($limit)) {
$query .= " LIMIT " . (int) $limit;
}
$result = $this
->query($query);
// Convert the result object into an array of resources
$graphs = array();
foreach ($result as $row) {
array_push($graphs, $row->g);
}
return $graphs;
}