Package com.googlecode.javaewah.symmetric

Class EWAHPointer

java.lang.Object

com.googlecode.javaewah.symmetric.EWAHPointer

All Implemented Interfaces:

Comparable<EWAHPointer>

public final class EWAHPointer
extends Object
implements Comparable<EWAHPointer>

Wrapper around an IteratingBufferedRunningLengthWord used by the RunningBitmapMerge class.

Since:

0.8.0

Author:

Daniel Lemire

Field Summary

Fields

Modifier and Type	Field	Description
IteratingBufferedRunningLengthWord	iterator	Underlying iterator

Constructor Summary

Constructors

Constructor	Description
EWAHPointer(int previousEndRun, IteratingBufferedRunningLengthWord rw, int pos)	Construct a pointer over an IteratingBufferedRunningLengthWord.

Method Summary

Modifier and Type	Method	Description
int	beginOfRun()
void	callbackUpdate(UpdateableBitmapFunction f)
int	compareTo(EWAHPointer other)
int	endOfRun()
boolean	hasNoData()
void	parseNextRun()	Process the next run

Methods inherited from class java.lang.Object

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

Field Details

iterator

public final IteratingBufferedRunningLengthWord iterator

Underlying iterator

Constructor Details

EWAHPointer

public EWAHPointer(int previousEndRun,
 IteratingBufferedRunningLengthWord rw,
 int pos)

Construct a pointer over an IteratingBufferedRunningLengthWord.

Parameters:

previousEndRun - word where the previous run ended

rw - the iterator

pos - current position (in word)

Method Details

endOfRun

public int endOfRun()

Returns:

the end of the current run

beginOfRun

public int beginOfRun()

Returns:

the beginning of the current run

parseNextRun

public void parseNextRun()

Process the next run

hasNoData

public boolean hasNoData()

Returns:

true if there is no more data

callbackUpdate

public void callbackUpdate(UpdateableBitmapFunction f)

Parameters:

f - call the function with the current information

compareTo

public int compareTo(EWAHPointer other)

Specified by:

compareTo in interface Comparable<EWAHPointer>