public boolean next()

in cassandra-analytics-common/src/main/java/org/apache/cassandra/spark/sparksql/RowIterator.java [139:187]

• 33 lines of code
• 9 McCabe index (conditional complexity)

    public boolean next() throws IOException
    {
        // We are finished if not already reading a row (if cell != null, it can happen if previous row was incomplete)
        // and SparkCellIterator has no next value
        if (cell == null && !it.hasNextThrows())
        {
            return false;
        }

        // Pivot values to normalize each cell into single SparkSQL or 'CQL' type row
        do
        {
            if (cell == null)
            {
                // Read next cell
                cell = it.next();
            }

            if (builder.isFirstCell())
            {
                // On first iteration, copy all partition keys, clustering keys, static columns
                assert cell.isNewRow;
                builder.copyKeys(cell);
            }
            else if (cell.isNewRow)
            {
                // Current row is incomplete, so we have moved to new row before reaching end
                // break out to return current incomplete row and handle next row in next iteration
                break;
            }

            builder.onCell(cell);

            if (it.hasProjectedValueColumns())
            {
                // If schema has value column
                builder.copyValue(cell);
            }
            cell = null;
            // Keep reading more cells until we read the entire row
        } while (builder.hasMoreCells() && it.hasNextThrows());

        // Build row and reset builder for next row
        row = builder.build();
        builder.reset();

        stats.nextRow();
        return true;
    }