org.datavec.dataframe.util

Interface Selection

All Superinterfaces:

it.unimi.dsi.fastutil.ints.IntIterable, java.lang.Iterable<java.lang.Integer>

All Known Implementing Classes:

BitmapBackedSelection

public interface Selection
extends it.unimi.dsi.fastutil.ints.IntIterable

A selection maintains an ordered set of ints that can be used to select rows from a table or column

Method Summary

Modifier and Type	Method and Description
void	add(int i) Adds the given integer to the Selection if it is not already present, and does nothing otherwise
void	addRange(int start, int end) Adds to the current bitmap all integers in [rangeStart,rangeEnd)
void	and(Selection otherSelection) Intersects the receiver and otherSelection, updating the receiver
void	andNot(Selection otherSelection) Implements the set difference operation between the receiver and otherSelection, updating the receiver
void	clear()
boolean	contains(int i)
int	get(int i)
boolean	isEmpty()
void	or(Selection otherSelection) Implements the union of the receiver and otherSelection, updating the receiver
int	size()
int[]	toArray()
org.roaringbitmap.RoaringBitmap	toBitmap() Returns an IntArrayList containing the ints in this selection
it.unimi.dsi.fastutil.ints.IntArrayList	toIntArrayList()

Methods inherited from interface it.unimi.dsi.fastutil.ints.IntIterable

iterator

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Detail

toArray

int[] toArray()

toBitmap

org.roaringbitmap.RoaringBitmap toBitmap()

Returns an IntArrayList containing the ints in this selection

toIntArrayList

it.unimi.dsi.fastutil.ints.IntArrayList toIntArrayList()

add

void add(int i)

Adds the given integer to the Selection if it is not already present, and does nothing otherwise

size

int size()

and

void and(Selection otherSelection)

Intersects the receiver and otherSelection, updating the receiver

or

void or(Selection otherSelection)

Implements the union of the receiver and otherSelection, updating the receiver

andNot

void andNot(Selection otherSelection)

Implements the set difference operation between the receiver and otherSelection, updating the receiver

isEmpty

boolean isEmpty()

clear

void clear()

contains

boolean contains(int i)

addRange

void addRange(int start,
              int end)

Adds to the current bitmap all integers in [rangeStart,rangeEnd)

Parameters:

start - inclusive beginning of range

end - exclusive ending of range

get

int get(int i)