Package it.unimi.di.big.mg4j.index

Class SkipBitStreamIndexWriter.TowerData

java.lang.Object

it.unimi.di.big.mg4j.index.SkipBitStreamIndexWriter.TowerData

Enclosing class:

SkipBitStreamIndexWriter

public static class SkipBitStreamIndexWriter.TowerData
extends Object

A structure maintaining statistical data about tower construction.

Field Summary

Fields

Modifier and Type	Field	Description
long	bitsForLowerBitSkips	The number of bits written for bit skips in the lower part of a tower.
long	bitsForLowerSkipPointers	The number of bits written for skip pointers in the lower part of a tower.
long	bitsForTopBitSkips	The number of bits written for bit skips at the top of a tower.
long	bitsForTopSkipPointers	The number of bits written for skip pointers at the top of a tower.
long	bitsForTowerLengths	The number of bits written for tower lengths.
long	numberOfLowerEntries	The number of written lower skip entries.
long	numberOfSkipTowers	The number of written skip towers.
long	numberOfTopEntries	The number of written top skip entries.

Constructor Summary

Constructors

Constructor	Description
TowerData()

Method Summary

Modifier and Type	Method	Description
long	bitsForBitSkips()	Returns the overall number of bits used for bit skips.
long	bitsForEntries()	Returns the overall number of bits used for tower entries (bits for tower lengths are not included).
long	bitsForSkipPointers()	Returns the overall number of bits used for skip pointers.
long	bitsForTowers()	Returns the overall number of bits used for towers.
long	numberOfEntries()	Returns the overall number of entries.

Methods inherited from class java.lang.Object

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

Field Detail

bitsForTopBitSkips

public long bitsForTopBitSkips

The number of bits written for bit skips at the top of a tower.

bitsForTopSkipPointers

public long bitsForTopSkipPointers

The number of bits written for skip pointers at the top of a tower.

bitsForLowerBitSkips

public long bitsForLowerBitSkips

The number of bits written for bit skips in the lower part of a tower.

bitsForLowerSkipPointers

public long bitsForLowerSkipPointers

The number of bits written for skip pointers in the lower part of a tower.

bitsForTowerLengths

public long bitsForTowerLengths

The number of bits written for tower lengths.

numberOfSkipTowers

public long numberOfSkipTowers

The number of written skip towers.

numberOfTopEntries

public long numberOfTopEntries

The number of written top skip entries.

numberOfLowerEntries

public long numberOfLowerEntries

The number of written lower skip entries.

Constructor Detail

TowerData

public TowerData()

Method Detail

bitsForSkipPointers

public long bitsForSkipPointers()

Returns the overall number of bits used for skip pointers.

Returns:

the overall number of bits used for skip pointers.

bitsForBitSkips

public long bitsForBitSkips()

Returns the overall number of bits used for bit skips.

Returns:

the overall number of bits used for bit skips.

bitsForEntries

public long bitsForEntries()

Returns the overall number of bits used for tower entries (bits for tower lengths are not included).

Returns:

the overall number of bits used for tower entries.

bitsForTowers

public long bitsForTowers()

Returns the overall number of bits used for towers.

Returns:

the overall number of bits used for towers.

numberOfEntries

public long numberOfEntries()

Returns the overall number of entries.

Returns:

the overall number of entries.