/**
* This function parse a SPARQL query, send the query and parse the SPARQL result in a array.
* You can custom the result with the parameter $result_format :
* <ul>
* <li>rows to return array of results
* <li>row to return array of first result
* <li>raw to return boolean for request ask, insert and delete
* </ul>
* @param string $q : Query SPARQL
* @param string $result_format : Optional, rows, row or raw
* @return array|boolean in function of parameter $result_format
* @access public
*/
public function query($q, $result_format = '')
{
$t1 = Endpoint::mtime();
$response = $this->queryRead($q);
xml_parse($this->_parserSparqlResult->getParser(), $response, true);
$result = $this->_parserSparqlResult->getResult();
$result['query_time'] = Endpoint::mtime() - $t1;
return $result;
}
/**
* This function parse a SPARQL query, send the query and parse the SPARQL result in a array.
* You can custom the result with the parameter $result_format :
* <ul>
* <li>rows to return array of results
* <li>row to return array of first result
* <li>raw to return boolean for request ask, insert and delete
* </ul>
* @param string $q : Query SPARQL
* @param string $result_format : Optional, rows, row or raw
* @return array|boolean in function of parameter $result_format
* @access public
*/
public function query($q, $result_format = 'rows')
{
$t1 = Endpoint::mtime();
$result = null;
switch ($result_format) {
case "json":
$response = $this->queryRead($q, "application/sparql-results+json");
$result = json_decode($response);
break;
case "row":
case "raw":
default:
//rows
$response = "";
if (preg_match("/(INSERT|DELETE|CLEAR|LOAD)/i", $q)) {
$response = $this->queryUpdate($q);
} else {
$response = $this->queryRead($q);
}
$parser = $this->_parserSparqlResult->getParser();
$success = xml_parse($parser, $response, true);
$result = $this->_parserSparqlResult->getResult();
if (!$success) {
//if(! array_key_exists("result",$result)){
$message = "Error parsing XML result:" . xml_error_string(xml_get_error_code($parser)) . ' Response : ' . $response . "\n";
$error = $this->errorLog($q, null, $this->_endpoint, 200, $message);
$this->addError($error);
return false;
}
}
$result['query_time'] = Endpoint::mtime() - $t1;
switch ($result_format) {
case "row":
return $result["result"]["rows"][0];
case "raw":
return $result["result"]["rows"][0][$result["result"]["variables"][0]];
case "json":
default:
//rows
return $result;
}
}
