/**
* returns instance of the class (Singleton Design Pattern)
* @return <type>
*/
public static function get_instance()
{
if (!isset(self::$instance)) {
self::$instance = new UPCompDatabase();
}
return self::$instance;
}
protected function usersToObjectRate($dbQuery)
{
$database = UPCompDatabase::get_instance();
$qr = $database->executeQuery($dbQuery);
$eventsList = $qr->getResponseList();
//rating objects
if (!$eventsList) {
//wrong query
$errLog = ErrorLog::get_instance();
$errLog->logError("No events of the specified type found, no prediction made", "Standard");
return false;
} else {
while ($record = $database->getNextRow($eventsList)) {
if (array_key_exists($record["objectID"], $this->objectToScoreArray)) {
$objectRating = $this->objectToScoreArray[$record["objectID"]];
} else {
$objectRating = 0;
}
if (is_array($this->users) and array_key_exists($record["userID"], $this->users)) {
$userImportance = $this->users[$record["userID"]];
} else {
$userImportance = 0;
}
$objectRating = $this->ratingAggregation($objectRating, $record["eventValue"], $record["eventType"], $this->eventImportance, $userImportance);
$this->objectToScoreArray[$record["objectID"]] = $objectRating;
}
}
}