javaewah
Interface BitmapStorage

All Known Implementing Classes:

BitCounter, EWAHCompressedBitmap, NonEmptyVirtualStorage

public interface BitmapStorage

Low level bitset writing methods.

Since:

0.4.0

Author:

David McIntosh

Method Summary

int	add(long newdata) Adding words directly to the bitmap (for expert use).
long	addStreamOfDirtyWords(long[] data, long start, long number) if you have several dirty words to copy over, this might be faster.
int	addStreamOfEmptyWords(boolean v, long number) For experts: You want to add many zeroes or ones? This is the method you use.
long	addStreamOfNegatedDirtyWords(long[] data, long start, long number) Like "addStreamOfDirtyWords" but negates the words being added.
void	setSizeInBits(int bits) directly set the sizeinbits field

Method Detail

add

int add(long newdata)

Adding words directly to the bitmap (for expert use). This is normally how you add data to the array. So you add bits in streams of 8*8 bits.

Parameters:

newdata - the word

Returns:

the number of words added to the buffer

addStreamOfEmptyWords

int addStreamOfEmptyWords(boolean v,
                          long number)

For experts: You want to add many zeroes or ones? This is the method you use.

Parameters:

v - zeros or ones

number - how many to words add

Returns:

the number of words added to the buffer

addStreamOfDirtyWords

long addStreamOfDirtyWords(long[] data,
                           long start,
                           long number)

if you have several dirty words to copy over, this might be faster.

Parameters:

data - the dirty words

start - the starting point in the array

number - the number of dirty words to add

Returns:

how many (compressed) words were added to the bitmap

addStreamOfNegatedDirtyWords

long addStreamOfNegatedDirtyWords(long[] data,
                                  long start,
                                  long number)

Like "addStreamOfDirtyWords" but negates the words being added.

Parameters:

data - the dirty words

start - the starting point in the array

number - the number of dirty words to add

Returns:

how many (compressed) words were added to the bitmap

setSizeInBits

void setSizeInBits(int bits)

directly set the sizeinbits field

Parameters:

bits - number of bits