Module org.apache.lucene.codecs

Package org.apache.lucene.codecs.simpletext

Class SimpleTextSkipWriter

java.lang.Object

org.apache.lucene.codecs.MultiLevelSkipListWriter

org.apache.lucene.codecs.simpletext.SimpleTextSkipWriter

class SimpleTextSkipWriter
extends MultiLevelSkipListWriter

plain text skip data.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final int	BLOCK_SIZE
(package private) static final BytesRef	CHILD_POINTER
private CompetitiveImpactAccumulator[]	curCompetitiveFreqNorms
private int	curDoc
private long	curDocFilePointer
(package private) static final BytesRef	FREQ
(package private) static final BytesRef	IMPACT
(package private) static final BytesRef	IMPACTS
(package private) static final BytesRef	IMPACTS_END
(package private) static final BytesRef	LEVEL
(package private) static final BytesRef	LEVEL_LENGTH
(package private) static final int	maxSkipLevels
(package private) static final BytesRef	NORM
private final BytesRefBuilder	scratch
(package private) static final BytesRef	SKIP_DOC
(package private) static final BytesRef	SKIP_DOC_FP
(package private) static final BytesRef	SKIP_LIST
(package private) static final int	skipMultiplier
private Map<Integer,Boolean>	wroteHeaderPerLevelMap

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

numberOfSkipLevels

Constructor Summary

Constructors

Constructor	Description
SimpleTextSkipWriter(SegmentWriteState writeState)

Method Summary

Modifier and Type	Method	Description
(package private) void	bufferSkip(int doc, long docFilePointer, int numDocs, CompetitiveImpactAccumulator competitiveImpactAccumulator)
protected void	resetSkip()	Creates new buffers or empties the existing ones
protected void	writeChildPointer(long childPointer, DataOutput skipBuffer)	Writes the child pointer of a block to the given output.
protected void	writeLevelLength(long levelLength, IndexOutput output)	Writes the length of a level to the given output.
long	writeSkip(IndexOutput output)	Writes the buffered skip lists to the given output.
protected void	writeSkipData(int level, DataOutput skipBuffer)	Subclasses must implement the actual skip data encoding in this method.

Methods inherited from class org.apache.lucene.codecs.MultiLevelSkipListWriter

bufferSkip, init

Methods inherited from class java.lang.Object

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

Field Details

skipMultiplier

static final int skipMultiplier

See Also:

• Constant Field Values

maxSkipLevels

static final int maxSkipLevels

See Also:

• Constant Field Values

BLOCK_SIZE

static final int BLOCK_SIZE

See Also:

• Constant Field Values

wroteHeaderPerLevelMap

private Map<Integer,Boolean> wroteHeaderPerLevelMap

curDoc

private int curDoc

curDocFilePointer

private long curDocFilePointer

curCompetitiveFreqNorms

private CompetitiveImpactAccumulator[] curCompetitiveFreqNorms

scratch

private final BytesRefBuilder scratch

SKIP_LIST

static final BytesRef SKIP_LIST

LEVEL_LENGTH

static final BytesRef LEVEL_LENGTH

LEVEL

static final BytesRef LEVEL

SKIP_DOC

static final BytesRef SKIP_DOC

SKIP_DOC_FP

static final BytesRef SKIP_DOC_FP

IMPACTS

static final BytesRef IMPACTS

IMPACT

static final BytesRef IMPACT

FREQ

static final BytesRef FREQ

NORM

static final BytesRef NORM

IMPACTS_END

static final BytesRef IMPACTS_END

CHILD_POINTER

static final BytesRef CHILD_POINTER

Constructor Details

SimpleTextSkipWriter

SimpleTextSkipWriter(SegmentWriteState writeState)
              throws IOException

Throws:

IOException

Method Details

writeSkipData

protected void writeSkipData(int level,
 DataOutput skipBuffer)
                      throws IOException

Description copied from class: MultiLevelSkipListWriter

Subclasses must implement the actual skip data encoding in this method.

Specified by:

writeSkipData in class MultiLevelSkipListWriter

Parameters:

level - the level skip data shall be writing for

skipBuffer - the skip buffer to write to

Throws:

IOException

resetSkip

protected void resetSkip()

Description copied from class: MultiLevelSkipListWriter

Creates new buffers or empties the existing ones

Overrides:

resetSkip in class MultiLevelSkipListWriter

writeSkip

public long writeSkip(IndexOutput output)
               throws IOException

Description copied from class: MultiLevelSkipListWriter

Writes the buffered skip lists to the given output.

Overrides:

writeSkip in class MultiLevelSkipListWriter

Parameters:

output - the IndexOutput the skip lists shall be written to

Returns:

the pointer the skip list starts

Throws:

IOException

bufferSkip

void bufferSkip(int doc,
 long docFilePointer,
 int numDocs,
 CompetitiveImpactAccumulator competitiveImpactAccumulator)
         throws IOException

Throws:

IOException

writeLevelLength

protected void writeLevelLength(long levelLength,
 IndexOutput output)
                         throws IOException

Description copied from class: MultiLevelSkipListWriter

Writes the length of a level to the given output.

Overrides:

writeLevelLength in class MultiLevelSkipListWriter

Parameters:

levelLength - the length of a level

output - the IndexOutput the length shall be written to

Throws:

IOException

writeChildPointer

protected void writeChildPointer(long childPointer,
 DataOutput skipBuffer)
                          throws IOException

Description copied from class: MultiLevelSkipListWriter

Writes the child pointer of a block to the given output.

Overrides:

writeChildPointer in class MultiLevelSkipListWriter

Parameters:

childPointer - block of higher level point to the lower level

skipBuffer - the skip buffer to write to

Throws:

IOException