java.lang.Object
- com.googlecode.javaewah.symmetric.UpdateableBitmapFunction

Direct Known Subclasses:

ThresholdFuncBitmap
```
public abstract class UpdateableBitmapFunction
extends java.lang.Object
```
This is a Java specification for an "updatable" Boolean function meant to run over EWAH bitmaps. Reference: Daniel Lemire, Owen Kaser, Kamel Aouiche, Sorting improves word-aligned bitmap indexes. Data & Knowledge Engineering 69 (1), pages 3-28, 2010.

Since:

0.8.0

Field Summary

Fields
Modifier and Type	Field	Description
`(package private) boolean[]`	`b`
`(package private) int`	`hammingWeight`
`(package private) int`	`litWeight`
`(package private) BitSet`	`litwlist`
`(package private) EWAHPointer[]`	`rw`

Constructor Summary

Constructors
Constructor Description

UpdateableBitmapFunction()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`clearLiteral(int pos)`
`abstract void`	`dispatch(BitmapStorage out, int runBegin, int runEnd)`	Writes out the answer.
`void`	`fillWithLiterals(java.util.List<EWAHPointer> container)`	append to the list the literal words as EWAHPointer
`java.lang.Iterable<EWAHPointer>`	`getLiterals()`	Goes through the literals.
`int`	`getNumberOfLiterals()`
`void`	`resize(int newsize)`
`void`	`setLiteral(int pos)`
`void`	`setOne(int pos)`
`void`	`setZero(int pos)`

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

- Field Detail
  - rw
```
EWAHPointer[] rw
```
  - hammingWeight
```
int hammingWeight
```
  - litWeight
```
int litWeight
```
  - b
```
boolean[] b
```
  - litwlist
```
final BitSet litwlist
```
- Constructor Detail
  - UpdateableBitmapFunction
```
UpdateableBitmapFunction()
```
- Method Detail
  - getNumberOfLiterals
```
public final int getNumberOfLiterals()
```
    Returns:
    
    the current number of literal words
  - getLiterals
```
public final java.lang.Iterable<EWAHPointer> getLiterals()
```
    Goes through the literals.
    
    Returns:
    
    an iterator
  - fillWithLiterals
```
public final void fillWithLiterals(java.util.List<EWAHPointer> container)
```
    append to the list the literal words as EWAHPointer
    
    Parameters:
    
    container - where we write
  - resize
```
public final void resize(int newsize)
```
    Parameters:
    
    newsize - the number of inputs
  - setLiteral
```
public void setLiteral(int pos)
```
    Parameters:
    
    pos - position of a literal
  - clearLiteral
```
public void clearLiteral(int pos)
```
    Parameters:
    
    pos - position where a literal was removed
  - setZero
```
public final void setZero(int pos)
```
    Parameters:
    
    pos - position where a zero word was added
  - setOne
```
public final void setOne(int pos)
```
    Parameters:
    
    pos - position were a 11...1 word was added
  - dispatch
```
public abstract void dispatch(BitmapStorage out,
                              int runBegin,
                              int runEnd)
```
    Writes out the answer.
    
    Parameters:
    
    out - output buffer
    
    runBegin - beginning of the run
    
    runEnd - end of the run

Class UpdateableBitmapFunction

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

rw

hammingWeight

litWeight

b

litwlist

Constructor Detail

UpdateableBitmapFunction

Method Detail

getNumberOfLiterals

getLiterals

fillWithLiterals

resize

setLiteral

clearLiteral

setZero

setOne

dispatch