private Optional<T> fetchRow() {
        if (this.row != null) {
            // already fetched
            return Optional.of(this.row);
        }

        this.hasReachedEos = hasReachedEos || ! wrapSqlException(() -> rs.next());
        if (this.hasReachedEos) {
            return Optional.empty();
        }

        this.row = wrapSqlException(() -> mapper.mapRow(rs, 1));
        return Optional.ofNullable(this.row);
    }
private Optional<T> fetchRow() {
        if (this.row != null) {
            
            return Optional.of(this.row);
        }

        this.hasReachedEos = hasReachedEos || ! wrapSqlException(() -> rs.next());
        if (this.hasReachedEos) {
            return Optional.empty();
        }

        this.row = wrapSqlException(() -> mapper.mapRow(rs, 1));
        return Optional.ofNullable(this.row);
    }
private Optional < T > fetchRow ( ) { if ( this . row != null ) { // already fetched return Optional . of ( this . row ) ; } this . hasReachedEos = hasReachedEos || ! wrapSqlException ( ( ) -> rs . next ( ) ) ; if ( this . hasReachedEos ) { return Optional . empty ( ) ; } this . row = wrapSqlException ( ( ) -> mapper . mapRow ( rs , 1 ) ) ; return Optional . ofNullable ( this . row ) ; }
Fetches a row if not fetched yet.
Fetches a row if not fetched yet .