com.googlecode.javaewah

Interface LogicalElement<T>

Type Parameters:

T - the type of element (e.g., a bitmap class)

All Known Implementing Classes:

EWAHCompressedBitmap, EWAHCompressedBitmap32

public interface LogicalElement<T>

A prototypical model for bitmaps. Used by the class FastAggregation. Users should probably not be concerned by this class.

Author:

Daniel Lemire

Method Summary

Modifier and Type	Method and Description
T	and(T le) Compute the bitwise logical and
T	andNot(T le) Compute the bitwise logical and not
T	compose(T le) Compute the composition
void	not() Compute the bitwise logical not (in place)
T	or(T le) Compute the bitwise logical or
int	sizeInBits() How many logical bits does this element represent?
int	sizeInBytes() Should report the storage requirement
T	xor(T le) Compute the bitwise logical Xor

Method Detail

and

T and(T le)

Compute the bitwise logical and

Parameters:

le - element

Returns:

the result of the operation

andNot

T andNot(T le)

Compute the bitwise logical and not

Parameters:

le - element

Returns:

the result of the operation

not

void not()

Compute the bitwise logical not (in place)

or

T or(T le)

Compute the bitwise logical or

Parameters:

le - another element

Returns:

the result of the operation

sizeInBits

int sizeInBits()

How many logical bits does this element represent?

Returns:

the number of bits represented by this element

sizeInBytes

int sizeInBytes()

Should report the storage requirement

Returns:

How many bytes

Since:

0.6.2

xor

T xor(T le)

Compute the bitwise logical Xor

Parameters:

le - element

Returns:

the result of the operation

compose

T compose(T le)

Compute the composition

Parameters:

le - another element

Returns:

the result of the operation