code: public void doRollback(DefaultTransactionStatus status) throws TransactionException {
  		CompensatingTransactionObject txObject = (CompensatingTransactionObject) status.getTransaction();
  		txObject.getHolder().getTransactionOperationManager().rollback();
  	}
docs: /*
  @see
  org.springframework.jdbc.datasource.DataSourceTransactionManager#doRollback
  (org.springframework.transaction.support.DefaultTransactionStatus)