Package org.apache.lucene.codecs.lucene99

Class Lucene99PostingsFormat.IntBlockTermState

java.lang.Object

org.apache.lucene.index.TermState

org.apache.lucene.index.OrdTermState

org.apache.lucene.codecs.BlockTermState

org.apache.lucene.codecs.lucene99.Lucene99PostingsFormat.IntBlockTermState

All Implemented Interfaces:

Cloneable

Enclosing class:

Lucene99PostingsFormat

public static final class Lucene99PostingsFormat.IntBlockTermState
extends BlockTermState

Holds all state required for Lucene99PostingsReader to produce a PostingsEnum without re-seeking the terms dict.

NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

Field Summary

Fields

Modifier and Type	Field	Description
long	docStartFP	file pointer to the start of the doc ids enumeration, in Lucene99PostingsFormat.DOC_EXTENSION file
long	lastPosBlockOffset	file offset for the last position in the last block, if there are more than ForUtil.BLOCK_SIZE positions; otherwise -1
long	payStartFP	file pointer to the start of the payloads enumeration, in Lucene99PostingsFormat.PAY_EXTENSION file
long	posStartFP	file pointer to the start of the positions enumeration, in Lucene99PostingsFormat.POS_EXTENSION file
int	singletonDocID	docid when there is a single pulsed posting, otherwise -1.
long	skipOffset	file offset for the start of the skip list, relative to docStartFP, if there are more than ForUtil.BLOCK_SIZE docs; otherwise -1

Fields inherited from class org.apache.lucene.codecs.BlockTermState

blockFilePointer, docFreq, termBlockOrd, totalTermFreq

Fields inherited from class org.apache.lucene.index.OrdTermState

ord

Constructor Summary

Constructors

Constructor	Description
IntBlockTermState()	Sole constructor.

Method Summary

Modifier and Type	Method	Description
Lucene99PostingsFormat.IntBlockTermState	clone()
void	copyFrom(TermState _other)	Copies the content of the given TermState to this instance
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

docStartFP

public long docStartFP

file pointer to the start of the doc ids enumeration, in Lucene99PostingsFormat.DOC_EXTENSION file

posStartFP

public long posStartFP

file pointer to the start of the positions enumeration, in Lucene99PostingsFormat.POS_EXTENSION file

payStartFP

public long payStartFP

file pointer to the start of the payloads enumeration, in Lucene99PostingsFormat.PAY_EXTENSION file

skipOffset

public long skipOffset

file offset for the start of the skip list, relative to docStartFP, if there are more than ForUtil.BLOCK_SIZE docs; otherwise -1

lastPosBlockOffset

public long lastPosBlockOffset

file offset for the last position in the last block, if there are more than ForUtil.BLOCK_SIZE positions; otherwise -1

One might think to use total term frequency to track how many positions are left to read as we decode the blocks, and decode the last block differently when num_left_positions < BLOCK_SIZE. Unfortunately this won't work since the tracking will be messed up when we skip blocks as the skipper will only tell us new position offset (start of block) and number of positions to skip for that block, without telling us how many positions it has skipped.

singletonDocID

public int singletonDocID

docid when there is a single pulsed posting, otherwise -1. freq is always implicitly totalTermFreq in this case.

Constructor Details

IntBlockTermState

public IntBlockTermState()

Sole constructor.

Method Details

clone

public Lucene99PostingsFormat.IntBlockTermState clone()

Overrides:

clone in class TermState

copyFrom

public void copyFrom(TermState _other)

Description copied from class: TermState

Copies the content of the given TermState to this instance

Overrides:

copyFrom in class BlockTermState

Parameters:

_other - the TermState to copy

toString

public String toString()

Overrides:

toString in class BlockTermState