C++ (Cpp) Bounds::left_infinite Beispiele

Beispiel #1

Datei: cursor.cpp Projekt: BohuTANG/ft-index

    bool DBC::set_range(const IterationStrategy &strategy, const Bounds &bounds, YDB_CALLBACK_FUNCTION callback, void *extra) const {
        int r = dbc()->c_set_bounds(dbc(), bounds.left_dbt(), bounds.right_dbt(), strategy.prelock, 0);
        handle_ft_retval(r);

        if (strategy.forward) {
            if (bounds.left_infinite()) {
                r = dbc()->c_getf_first(dbc(), strategy.getf_flags(), callback, extra);
            } else {
                r = dbc()->c_getf_set_range(dbc(), strategy.getf_flags(), const_cast<DBT *>(bounds.left_dbt()), callback, extra);
            }
        } else {
            if (bounds.right_infinite()) {
                r = dbc()->c_getf_last(dbc(), strategy.getf_flags(), callback, extra);
            } else {
                r = dbc()->c_getf_set_range_reverse(dbc(), strategy.getf_flags(), const_cast<DBT *>(bounds.right_dbt()), callback, extra);
            }
        }
        if (r == DB_NOTFOUND) {
            return false;
        } else if (r != 0 && r != -1) {
            handle_ft_retval(r);
        }
        return true;
    }