Abort a transaction.
MCO_RET mco_trans_rollback( /*IN*/ mco_trans_h t );
|
t |
The |
This function aborts a transaction. Any changes to the database are discarded. Any object handles scoped to the transaction become invalid.
| MCO_S_OK | The transaction was committed successfully |
| MCO_ERR_TRN |
A database transaction error occurred |
Application snippet:
const char * dbname = "SimpleDb";
int main(int argc, char* argv[])
{
mco_db_h db;
MCO_RET rc;
mco_device_t dev;
mco_db_params_t db_params;
mco_trans_h t;
...
rc = mco_db_open_dev( dbname, simple_get_dictionary(), &dev, 1, &db_params );
if ( MCO_S_OK != rc )
{
rc = mco_db_connect( dbname, &db );
...
rc = mco_trans_start(db, MCO_READ_ONLY, MCO_TRANS_FOREGROUND, &t);
if ( MCO_S_OK == rc )
{
...
rc = mco_trans_rollback( t );
...
}
}
...
}