org.apache.parquet.internal.filter2.columnindex

Class RowRanges

java.lang.Object

org.apache.parquet.internal.filter2.columnindex.RowRanges

public class RowRanges
extends Object

Class representing row ranges in a row-group. These row ranges are calculated as a result of the column index based filtering. To be used iterate over the matching row indexes to be read from a row-group, retrieve the count of the matching rows or check overlapping of a row index range.

See Also:

ColumnIndexFilter#calculateRowRanges(Filter, ColumnIndexStore, Set, long)

Method Summary

Modifier and Type	Method and Description
boolean	isOverlapping(long from, long to)
PrimitiveIterator.OfLong	iterator()
long	rowCount()
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

rowCount

public long rowCount()

Returns:

the number of rows in the ranges

iterator

public PrimitiveIterator.OfLong iterator()

Returns:

the ascending iterator of the row indexes contained in the ranges

isOverlapping

public boolean isOverlapping(long from,
                             long to)

Parameters:

from - the first row of the range to be checked for connection

to - the last row of the range to be checked for connection

Returns:

true if the specified range is overlapping (have common elements) with one of the ranges

toString

public String toString()

Overrides:

toString in class Object