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BaseBitmap Class Reference
[Bitmap processing]

A simple bitmap class with only uncompressed data for name bitmaps. More...

#include <BaseBitmap.h>

Inheritance diagram for BaseBitmap:

[legend]

Public Methods
	BaseBitmap ()
	Default constructor.
	BaseBitmap (int numBits)
	Allocate the memory for the BaseBitmap.
	BaseBitmap (BaseBitmap &)
	Copy constructor.
	~BaseBitmap ()
	Deallocate memory for the BaseBitmap.
void	FillRand (double prob)
	Fill the BaseBitmap with random data.
void	FillOnes ()
	Fill the BaseBitmap with ones.
int	Count (int &CountCounts)
	Count the ones in the bitmap.
void	Or (const BaseBitmap &b1, const BaseBitmap &b2)
	Bitwise OR 2 bitmaps and store the result.
void	AndOnly (const BaseBitmap &b1, const BaseBitmap &b2, int &CountAnds)
	Bitwise AND 2 bitmaps and store the result.
void	NotAndOnly (const BaseBitmap &b1, const BaseBitmap &b2, int &CountAnds)
	Bitwise AND 2 bitmaps and the negation and store the result.
bool	Superset (const BaseBitmap *subset)
	Determine whether this bitmap is a superset of the parameter.
bool	SupersetEq (const BaseBitmap *subset)
	Determine whether this bitmap is a superset of the parameter or equal to it.
unsigned int	CheckPosition (int bitIndex, int &CountCheckPosition)
	Check position of bit.
unsigned int	CheckPosition (int bitIndex)
	Check position of bit.
void	FillEmptyPosition (int bitIndex)
	Fill in a 1 in a certain position.
Data Fields
int	_size
	in number of INTs
int	_count
	the number of ones in the BaseBitmap
unsigned int *	_memory
	where uncompressed data is stored
Friends
class	Count

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Detailed Description

A simple bitmap class with only uncompressed data for name bitmaps.

Definition at line 53 of file BaseBitmap.h.

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Constructor & Destructor Documentation

BaseBitmap::BaseBitmap (    )  [inline, explicit]

Default constructor. Definition at line 60 of file BaseBitmap.h.

BaseBitmap::~BaseBitmap (    )  [inline]

Deallocate memory for the BaseBitmap. Definition at line 70 of file BaseBitmap.h.

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Member Function Documentation

unsigned int BaseBitmap::CheckPosition (  int    bitIndex )  [inline]

Check position of bit. Parameters: bitIndex  bit position in BaseBitmap to be checked Returns: 0 if bit is 0, 1 otherwise Definition at line 108 of file BaseBitmap.h.

unsigned int BaseBitmap::CheckPosition (  int    bitIndex, int &    CountCheckPosition )  [inline]

Check position of bit. Parameters: CountCheckPosition  # of times this function is called bitIndex  bit position in BaseBitmap to be checked Returns: 0 if bit is 0, 1 otherwise Definition at line 97 of file BaseBitmap.h. Referenced by AddToFI().

void BaseBitmap::FillEmptyPosition (  int    bitIndex )  [inline]

Fill in a 1 in a certain position. Parameters: bitIndex  bit position in BaseBitmap to be changed Definition at line 117 of file BaseBitmap.h.

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Friends And Related Function Documentation

friend class Count [friend]

Reimplemented in Bitmap. Definition at line 85 of file BaseBitmap.h.

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Field Documentation

int BaseBitmap::_count

the number of ones in the BaseBitmap Definition at line 87 of file BaseBitmap.h. Referenced by AddToF1(), AddToFCI(), AddToFI(), AddToMFI(), BaseBitmap(), Bitmap::Bitmap(), Bitmap::BuildSource(), Count(), F1FromFile(), MAFIA(), MergeRepeatedItemsets(), Or(), ReorderTail(), Bitmap::SmallCount(), Superset(), and SupersetEq().

unsigned int* BaseBitmap::_memory

where uncompressed data is stored Definition at line 88 of file BaseBitmap.h. Referenced by AndOnly(), BaseBitmap(), Bitmap::Bitmap(), Bitmap::BuildRelComp(), CheckPosition(), Count(), FillEmptyPosition(), FillOnes(), FillRand(), NotAndOnly(), Or(), Superset(), SupersetEq(), and ~BaseBitmap().

int BaseBitmap::_size

in number of INTs Definition at line 86 of file BaseBitmap.h. Referenced by AndOnly(), BaseBitmap(), Bitmap::Bitmap(), Bitmap::BuildRelComp(), Count(), FillOnes(), FillRand(), NotAndOnly(), Or(), Superset(), and SupersetEq().

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The documentation for this class was generated from the following files:

• BaseBitmap.h
• BaseBitmap.cpp

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