public function getInstance()
{
if (self::$instance === NULL) {
$argv = func_get_args();
$class = __CLASS__;
self::$instance = new $class($argv[0]);
}
return self::$instance;
}
/**
* @access public
* @param array structure defines correlatio between catalog & source fields
* @param string could be 'CSV' or (not implemented so far) 'DB'
*/
public static function createCatalogProvider($structure, $source_type)
{
try {
switch ($source_type) {
case 'CSV':
return CatalogCSV::getInstance($structure);
break;
default:
return new NullCatalog();
}
} catch (Exception $e) {
self::log($e->getMessage(), 'err');
}
}
