protected IColumn computeNext() { if (reader == null) return endOfData(); while (true) { IColumn column = reader.pollColumn(); if (column == null) return endOfData(); if (isColumnNeeded(column)) return column; } }
public void close() throws IOException { if (reader != null) reader.close(); }
public ColumnFamily getColumnFamily() { return reader == null ? null : reader.getEmptyColumnFamily(); }