case TRANSACTION_READ_UNCOMMITTED : mc.setTransactionIsolation(GDS.isc_tpb_read_committed); break;
    public void setTransactionIsolation(int level) throws SQLException {        switch (level) {            case TRANSACTION_SERIALIZABLE :                mc.setTransactionIsolation(GDS.isc_tpb_consistency);                break;            case TRANSACTION_REPEATABLE_READ :                mc.setTransactionIsolation(GDS.isc_tpb_concurrency);                break;            case TRANSACTION_READ_COMMITTED :                mc.setTransactionIsolation(GDS.isc_tpb_read_committed);                break;            default: throw new SQLException("Unsupported transaction isolation level");        }    }