json = new HTML_AJAX_JSON(SERVICES_JSON_LOOSE_TYPE); #WILL: corrected class name
}
// This method submits a query and synchronously returns its result.
// If authentication credentials are passed, it uses them as an HTTP Cookie.
function read($queryobj, $credentials) {
global $debug; //WILL: to show query and response
// Put the query into an envelope object
$envelope = array("qname" => array("query" => $queryobj));
// Serialize the envelope object to JSON text
$querytext = $this->json->encode($envelope);
if ($debug) { print "Query:
$querytext
"; } //WILL: show query
// Then URL encode the serialized text
$encoded = urlencode($querytext);
// Now build the URL that represents the query
// Note that we use an HTTP GET request for read queries
$url = $this->URL . "?queries=" . $encoded;
// Use the curl library to send the query and get response text
$request = curl_init($url);
// Return the result instead of printing it out.
curl_setopt($request, CURLOPT_RETURNTRANSFER, TRUE);
// If we have credentials, send them with the request as a cookie
if ($credentials) curl_setopt($request, CURLOPT_COOKIE, $credentials);
// Now fetch the URL
$responsetext = curl_exec($request);
curl_close($request);
// Parse the server's response from JSON text into a PHP array
$response = $this->json->decode($responsetext);
// Return null if the query was not successful
if ($response["qname"]["code"] != "/api/status/ok") { //WILL: Database API has changed since example was written
echo "Query Failure:
$responsetext
";
return null;
}
if ($debug) echo "Query Result:
$responsetext
"; //WILL: Show the response
// Otherwise, open the envelope and just return the actual result object
return $response["qname"]["result"];
}
}
?>