/**
* Get database connection
*
* @return \PDO
* @throws \Exception
*/
protected function getDbConnection()
{
if (is_null($this->dbConnection)) {
$dbParameters = $this->_getDatabaseConnectionParameters();
if (!is_array($dbParameters)) {
throw new \Exception('No valid database connection parameters found');
}
$this->dbConnection = \Zettr\DbConnection::getConnection($dbParameters);
}
return $this->dbConnection;
}
/**
* Apply settings to current environment
*
* @throws \Exception
* @return bool
*/
public function apply()
{
foreach ($this->handlerCollection as $handler) {
/* @var $handler Handler\HandlerInterface */
$res = $handler->apply();
if (!$res) {
throw new \Exception('Error in handler: ' . $handler->getLabel());
}
}
DbConnection::commitAllTransactions();
return true;
}
