Package org.apache.parquet.column.page

Interface PageReadStore

  • All Superinterfaces:
    AutoCloseable
    public interface PageReadStore
extends AutoCloseable
    contains all the readers for all the columns of the corresponding row group

    TODO: rename to RowGroup?

    • Method Detail

      • getPageReader

        PageReader getPageReader​(ColumnDescriptor descriptor)
        Parameters:
        descriptor - the descriptor of the column
        Returns:
        the page reader for that column

      • getRowCount

        long getRowCount()
        Returns:
        the total number of rows in that row group

      • getRowIndexOffset

        default Optional<Long> getRowIndexOffset()
        Returns:
        the optional of the long representing the row index offset of this row group or an empty optional if the related data is not available

      • getRowIndexes

        default Optional<PrimitiveIterator.OfLong> getRowIndexes()
        Returns the indexes of the rows to be read/built if the related data is available. All the rows which index is not returned shall be skipped.
        Returns:
        the optional of the incremental iterator of the row indexes or an empty optional if the related data is not available