/**
* Retorna uma instância já existente ou nova instância do banco de dados.
*
* @return Zend_Db_Adapter_Abstract $instance
*/
public static function getInstance()
{
if (self::$instance === null) {
$config = Snep_Config::getConfig()->ambiente->db->toArray();
$adapter = array_shift($config);
if (strtoupper($adapter) == "PDO_MYSQL") {
$config["driver_options"] = array(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => true);
}
self::$instance = self::factory($adapter, $config);
Zend_Db_Table_Abstract::setDefaultAdapter(self::$instance);
require_once "Zend/Registry.php";
Zend_Registry::set("db", self::$instance);
}
return self::$instance;
}
