BitmapBackedSelection (tablesaw-core 0.38.1 API)

java.lang.Object
- tech.tablesaw.selection.BitmapBackedSelection

All Implemented Interfaces:

it.unimi.dsi.fastutil.ints.IntIterable, Iterable<Integer>, Selection
```
public class BitmapBackedSelection
extends Object
implements Selection
```

Constructor Summary

Constructors
Constructor and Description
`BitmapBackedSelection()`
`BitmapBackedSelection(int size)` Returns a selection initialized from 0 to the given size, which cane be used for queries that exclude certain items, by first selecting the items to exclude, then flipping the bits.
`BitmapBackedSelection(int[] arr)`
`BitmapBackedSelection(org.roaringbitmap.RoaringBitmap bitmap)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Selection`	`add(int... ints)` Adds the given integers to the Selection if it is not already present, and does nothing otherwise
`Selection`	`addRange(int start, int end)` Adds to the current bitmap all integers in [rangeStart,rangeEnd)
`Selection`	`and(Selection otherSelection)` Intersects the receiver and `otherSelection`, updating the receiver
`Selection`	`andNot(Selection otherSelection)` Implements the set difference operation between the receiver and `otherSelection`, after updating the receiver
`Selection`	`clear()`
`boolean`	`contains(int i)`
`boolean`	`equals(Object o)`
`Selection`	`flip(int rangeStart, int rangeEnd)` Returns a selection with the bits from this selection flipped over the given range
`int`	`get(int i)` Returns the value of the ith element.
`int`	`hashCode()`
`boolean`	`isEmpty()`
`it.unimi.dsi.fastutil.ints.IntIterator`	`iterator()` Returns a fastUtil intIterator that wraps a bitmap intIterator
`Selection`	`or(Selection otherSelection)` Implements the union of the receiver and `otherSelection`, updating the receiver
`Selection`	`removeRange(long start, long end)`
`protected static Selection`	`selectNRowsAtRandom(int n, int max)` Returns an randomly generated selection of size N where Max is the largest possible value
`int`	`size()`
`int[]`	`toArray()`
`String`	`toString()`
`protected static Selection`	`with(int... rows)`
`protected static Selection`	`withoutRange(int totalRangeStart, int totalRangeEnd, int excludedRangeStart, int excludedRangeEnd)`
`protected static Selection`	`withRange(int start, int end)`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

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

Methods inherited from interface java.lang.Iterable
spliterator

- Constructor Detail
  - BitmapBackedSelection
```
public BitmapBackedSelection(int size)
```
    Returns a selection initialized from 0 to the given size, which cane be used for queries that exclude certain items, by first selecting the items to exclude, then flipping the bits.
    
    Parameters:
    
    size - The size The end point, exclusive
  - BitmapBackedSelection
```
public BitmapBackedSelection(int[] arr)
```
  - BitmapBackedSelection
```
public BitmapBackedSelection(org.roaringbitmap.RoaringBitmap bitmap)
```
  - BitmapBackedSelection
```
public BitmapBackedSelection()
```
- Method Detail
  - removeRange
```
public Selection removeRange(long start,
                             long end)
```
    Specified by:
    
    removeRange in interface Selection
  - flip
```
public Selection flip(int rangeStart,
                      int rangeEnd)
```
    Description copied from interface: Selection
    
    Returns a selection with the bits from this selection flipped over the given range
    
    Specified by:
    
    flip in interface Selection
  - add
```
public Selection add(int... ints)
```
    Description copied from interface: Selection
    
    Adds the given integers to the Selection if it is not already present, and does nothing otherwise
    
    Specified by:
    
    add in interface Selection
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - size
```
public int size()
```
    Specified by:
    
    size in interface Selection
  - toArray
```
public int[] toArray()
```
    Specified by:
    
    toArray in interface Selection
  - and
```
public Selection and(Selection otherSelection)
```
    Intersects the receiver and otherSelection, updating the receiver
    
    Specified by:
    
    and in interface Selection
  - or
```
public Selection or(Selection otherSelection)
```
    Implements the union of the receiver and otherSelection, updating the receiver
    
    Specified by:
    
    or in interface Selection
  - andNot
```
public Selection andNot(Selection otherSelection)
```
    Description copied from interface: Selection
    
    Implements the set difference operation between the receiver and otherSelection, after updating the receiver
    
    Specified by:
    
    andNot in interface Selection
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface Selection
  - clear
```
public Selection clear()
```
    Specified by:
    
    clear in interface Selection
  - contains
```
public boolean contains(int i)
```
    Specified by:
    
    contains in interface Selection
  - addRange
```
public Selection addRange(int start,
                          int end)
```
    Adds to the current bitmap all integers in [rangeStart,rangeEnd)
    
    Specified by:
    
    addRange in interface Selection
    
    Parameters:
    
    start - inclusive beginning of range
    
    end - exclusive ending of range
  - get
```
public int get(int i)
```
    Description copied from interface: Selection
    
    Returns the value of the ith element. For example, if there are three ints {4, 32, 71} in the selection, get(0) returns 4, get(1) returns 32, and get(2) returns 71
    It can be useful if you need to iterate over the data, although there is also an iterator
    
    Specified by:
    
    get in interface Selection
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - iterator
```
public it.unimi.dsi.fastutil.ints.IntIterator iterator()
```
    Returns a fastUtil intIterator that wraps a bitmap intIterator
    
    Specified by:
    
    iterator in interface it.unimi.dsi.fastutil.ints.IntIterable
    
    Specified by:
    
    iterator in interface Iterable<Integer>
  - with
```
protected static Selection with(int... rows)
```
    Specified by:
    
    with in interface Selection
  - withRange
```
protected static Selection withRange(int start,
                                     int end)
```
    Specified by:
    
    withRange in interface Selection
  - withoutRange
```
protected static Selection withoutRange(int totalRangeStart,
                                        int totalRangeEnd,
                                        int excludedRangeStart,
                                        int excludedRangeEnd)
```
    Specified by:
    
    withoutRange in interface Selection
  - selectNRowsAtRandom
```
protected static Selection selectNRowsAtRandom(int n,
                                               int max)
```
    Returns an randomly generated selection of size N where Max is the largest possible value
    
    Specified by:
    
    selectNRowsAtRandom in interface Selection

Class BitmapBackedSelection

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

Constructor Detail

BitmapBackedSelection

BitmapBackedSelection

BitmapBackedSelection

BitmapBackedSelection

Method Detail

removeRange

flip

add

toString

size

toArray

and

or

andNot

isEmpty

clear

contains

addRange

get

equals

hashCode

iterator

with

withRange

withoutRange

selectNRowsAtRandom