/**
* Returns and if needed creates a instance
* Singleton
*
* @access public static
* @return object Instance of the class
**/
public static function getInstance()
{
if (self::$logWriter == null) {
throw new Zend_Log_Exception('Incorrect $writer, check settings, type: ' . gettype($writer));
}
if (self::$instance == null) {
self::$instance = new self(self::$logWriter);
}
return self::$instance;
}
