org.apache.lucene.index

Class ReadersAndUpdates

java.lang.Object

org.apache.lucene.index.ReadersAndUpdates

class ReadersAndUpdates
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
SegmentCommitInfo	info
private boolean	isMerging
private Bits	liveDocs
private boolean	liveDocsShared
private java.util.Map<java.lang.String,DocValuesFieldUpdates>	mergingDVUpdates
private int	pendingDeleteCount
private SegmentReader	reader
private java.util.concurrent.atomic.AtomicInteger	refCount
private IndexWriter	writer

Constructor Summary

Constructors

Constructor and Description
ReadersAndUpdates(IndexWriter writer, SegmentCommitInfo info)
ReadersAndUpdates(IndexWriter writer, SegmentReader reader) Init from a previously opened SegmentReader.

Method Summary

Modifier and Type	Method and Description
void	decRef()
boolean	delete(int docID)
void	dropChanges()
void	dropMergingUpdates() Drops all merging updates.
void	dropReaders()
Bits	getLiveDocs()
java.util.Map<java.lang.String,DocValuesFieldUpdates>	getMergingFieldUpdates() Returns updates that came in while this segment was merging.
int	getPendingDeleteCount()
SegmentReader	getReader(IOContext context) Returns a SegmentReader.
(package private) SegmentReader	getReaderForMerge(IOContext context) Returns a reader for merge.
SegmentReader	getReadOnlyClone(IOContext context) Returns a ref to a clone.
Bits	getReadOnlyLiveDocs()
private void	handleBinaryDVUpdates(FieldInfos infos, java.util.Map<java.lang.String,BinaryDocValuesFieldUpdates> updates, TrackingDirectoryWrapper dir, DocValuesFormat dvFormat, SegmentReader reader, java.util.Map<java.lang.Integer,java.util.Set<java.lang.String>> fieldFiles)
private void	handleNumericDVUpdates(FieldInfos infos, java.util.Map<java.lang.String,NumericDocValuesFieldUpdates> updates, Directory dir, DocValuesFormat dvFormat, SegmentReader reader, java.util.Map<java.lang.Integer,java.util.Set<java.lang.String>> fieldFiles)
void	incRef()
void	initWritableLiveDocs()
int	refCount()
void	release(SegmentReader sr)
java.lang.String	toString()
boolean	verifyDocCounts()
private java.util.Set<java.lang.String>	writeFieldInfosGen(FieldInfos fieldInfos, Directory dir, DocValuesFormat dvFormat, FieldInfosFormat infosFormat)
void	writeFieldUpdates(Directory dir, DocValuesFieldUpdates.Container dvUpdates)
boolean	writeLiveDocs(Directory dir)

Methods inherited from class java.lang.Object

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

Field Detail

info

public final SegmentCommitInfo info

refCount

private final java.util.concurrent.atomic.AtomicInteger refCount

writer

private final IndexWriter writer

reader

private SegmentReader reader

liveDocs

private Bits liveDocs

pendingDeleteCount

private int pendingDeleteCount

liveDocsShared

private boolean liveDocsShared

isMerging

private boolean isMerging

mergingDVUpdates

private final java.util.Map<java.lang.String,DocValuesFieldUpdates> mergingDVUpdates

Constructor Detail

ReadersAndUpdates

public ReadersAndUpdates(IndexWriter writer,
                         SegmentCommitInfo info)

ReadersAndUpdates

public ReadersAndUpdates(IndexWriter writer,
                         SegmentReader reader)

Init from a previously opened SegmentReader.

NOTE: steals incoming ref from reader.

Method Detail

incRef

public void incRef()

decRef

public void decRef()

refCount

public int refCount()

getPendingDeleteCount

public int getPendingDeleteCount()

verifyDocCounts

public boolean verifyDocCounts()

getReader

public SegmentReader getReader(IOContext context)
                        throws java.io.IOException

Returns a SegmentReader.

Throws:

java.io.IOException

release

public void release(SegmentReader sr)
             throws java.io.IOException

Throws:

java.io.IOException

delete

public boolean delete(int docID)

dropReaders

public void dropReaders()
                 throws java.io.IOException

Throws:

java.io.IOException

getReadOnlyClone

public SegmentReader getReadOnlyClone(IOContext context)
                               throws java.io.IOException

Returns a ref to a clone. NOTE: you should decRef() the reader when you're done (ie do not call close()).

Throws:

java.io.IOException

initWritableLiveDocs

public void initWritableLiveDocs()
                          throws java.io.IOException

Throws:

java.io.IOException

getLiveDocs

public Bits getLiveDocs()

getReadOnlyLiveDocs

public Bits getReadOnlyLiveDocs()

dropChanges

public void dropChanges()

writeLiveDocs

public boolean writeLiveDocs(Directory dir)
                      throws java.io.IOException

Throws:

java.io.IOException

handleNumericDVUpdates

private void handleNumericDVUpdates(FieldInfos infos,
                                    java.util.Map<java.lang.String,NumericDocValuesFieldUpdates> updates,
                                    Directory dir,
                                    DocValuesFormat dvFormat,
                                    SegmentReader reader,
                                    java.util.Map<java.lang.Integer,java.util.Set<java.lang.String>> fieldFiles)
                             throws java.io.IOException

Throws:

java.io.IOException

handleBinaryDVUpdates

private void handleBinaryDVUpdates(FieldInfos infos,
                                   java.util.Map<java.lang.String,BinaryDocValuesFieldUpdates> updates,
                                   TrackingDirectoryWrapper dir,
                                   DocValuesFormat dvFormat,
                                   SegmentReader reader,
                                   java.util.Map<java.lang.Integer,java.util.Set<java.lang.String>> fieldFiles)
                            throws java.io.IOException

Throws:

java.io.IOException

writeFieldInfosGen

private java.util.Set<java.lang.String> writeFieldInfosGen(FieldInfos fieldInfos,
                                                           Directory dir,
                                                           DocValuesFormat dvFormat,
                                                           FieldInfosFormat infosFormat)
                                                    throws java.io.IOException

Throws:

java.io.IOException

writeFieldUpdates

public void writeFieldUpdates(Directory dir,
                              DocValuesFieldUpdates.Container dvUpdates)
                       throws java.io.IOException

Throws:

java.io.IOException

getReaderForMerge

SegmentReader getReaderForMerge(IOContext context)
                         throws java.io.IOException

Returns a reader for merge. This method applies field updates if there are any and marks that this segment is currently merging.

Throws:

java.io.IOException

dropMergingUpdates

public void dropMergingUpdates()

Drops all merging updates. Called from IndexWriter after this segment finished merging (whether successfully or not).

getMergingFieldUpdates

public java.util.Map<java.lang.String,DocValuesFieldUpdates> getMergingFieldUpdates()

Returns updates that came in while this segment was merging.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object