Set Time Stamp Example

This example scans MapR Database binary tables and sets the time stamp.

int32_t scanWithTimestamp( std::string table_name, int32_t num_versions, uint64_t max_num_rows, std::string start_row_key,
                std::string end_row_key, int64_t ts, std::string name_space, std::string column_name) {
        hb_scanner_t scanner = NULL;
        int32_t retCode;
        
        scan_num_rows = 0;
        scan_cell_count = 0;
        scan_done = false;

        // scanner object create 
        hb_scanner_create(client, &scanner);

        scan_data_t *scan_data = (scan_data_t *) calloc(1, sizeof(scan_data_t));
        
        // set the table to scan   
        scan_data->table_name_ = bytebuffer_printf("%s", table_name.c_str());
        hb_scanner_set_table(scanner, (char *) scan_data->table_name_->buffer, scan_data->table_name_->length));

        // start and end row - optional
        scan_data->start_row_key_ = bytebuffer_printf("%s", start_row_key.c_str());
        hb_scanner_set_start_row(scanner, scan_data->start_row_key_->buffer,
                        scan_data->start_row_key_->length);

        scan_data->end_row_key_ = bytebuffer_printf("%s", end_row_key.c_str());
        hb_scanner_set_end_row(scanner, scan_data->end_row_key_->buffer,
                        scan_data->end_row_key_->length);

        // add columns
        bytebuffer cfName   = bytebuffer_printf("%s", data_qualifier[0].c_str());
        bytebuffer columnName   = bytebuffer_printf("%s", data_qualifier[1].c_str());
        retCode=hb_scanner_add_column(scanner,(byte_t *)cfName->buffer,cfName->length,columnName->buffer,columnName->length);

        // set versions    
        hb_scanner_set_num_versions(scanner, num_versions);

        // set timestamp
        hb_scanner_set_timestamp(scanner, ts);

        // scan data
        retCode = hb_scanner_next(scanner, scan_callback, scan_data);
        return retCode;
}