/**
* Returns an instance of class (singleton pattern implementation).
*
* @return USEARCH_BOL_SearchDao
*/
public static function getInstance()
{
if (self::$classInstance === null) {
self::$classInstance = new self();
}
return self::$classInstance;
}
/**
* Class constructor
*/
private function __construct()
{
$this->listingDao = LOOVLISTING_BOL_ListingDao::getInstance();
}