it.unimi.di.mg4j.index
Class BitStreamHPIndexWriter.TowerData

java.lang.Object
  it.unimi.di.mg4j.index.BitStreamHPIndexWriter.TowerData

Enclosing class:

BitStreamHPIndexWriter

public static class BitStreamHPIndexWriter.TowerData
extends Object

A structure maintaining statistical data about tower construction.

Field Summary

long	bitsForLowerBitSkips The number of bits written for bit skips in the lower part of a tower.
long	bitsForLowerPositionsBitSkips The number of bits written for positions 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	bitsForTopPositionsBitSkips The number of bits written for positions 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

BitStreamHPIndexWriter.TowerData()

Method Summary

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	bitsForPositionsBitSkips() Returns the overall number of bits used for bit skips.
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.

bitsForTopPositionsBitSkips

public long bitsForTopPositionsBitSkips

The number of bits written for positions 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.

bitsForLowerPositionsBitSkips

public long bitsForLowerPositionsBitSkips

The number of bits written for positions 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

BitStreamHPIndexWriter.TowerData

public BitStreamHPIndexWriter.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.

bitsForPositionsBitSkips

public long bitsForPositionsBitSkips()

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.