org.apache.lucene.index

Class FilterCodecReader

java.lang.Object

org.apache.lucene.index.IndexReader

org.apache.lucene.index.LeafReader

org.apache.lucene.index.CodecReader

org.apache.lucene.index.FilterCodecReader

All Implemented Interfaces:

Closeable, AutoCloseable, Accountable

public class FilterCodecReader
extends CodecReader

A FilterCodecReader contains another CodecReader, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.index.LeafReader

LeafReader.CoreClosedListener

Nested classes/interfaces inherited from class org.apache.lucene.index.IndexReader

IndexReader.ReaderClosedListener

Field Summary

Fields

Modifier and Type	Field and Description
protected CodecReader	in The underlying CodecReader instance.

Constructor Summary

Constructors

Constructor and Description
FilterCodecReader(CodecReader in) Creates a new FilterCodecReader.

Method Summary

Methods

Modifier and Type	Method and Description
void	addCoreClosedListener(LeafReader.CoreClosedListener listener) Expert: adds a CoreClosedListener to this reader's shared core
DocValuesProducer	getDocValuesReader() Expert: retrieve underlying DocValuesProducer
FieldInfos	getFieldInfos() Get the FieldInfos describing all fields in this reader.
StoredFieldsReader	getFieldsReader() Expert: retrieve thread-private StoredFieldsReader
Bits	getLiveDocs() Returns the Bits representing live (not deleted) docs.
NormsProducer	getNormsReader() Expert: retrieve underlying NormsProducer
FieldsProducer	getPostingsReader() Expert: retrieve underlying FieldsProducer
TermVectorsReader	getTermVectorsReader() Expert: retrieve thread-private TermVectorsReader
int	maxDoc() Returns one greater than the largest possible document number.
int	numDocs() Returns the number of documents in this index.
void	removeCoreClosedListener(LeafReader.CoreClosedListener listener) Expert: removes a CoreClosedListener from this reader's shared core

Methods inherited from class org.apache.lucene.index.CodecReader

checkIntegrity, doClose, document, fields, getBinaryDocValues, getChildResources, getDocsWithField, getNormValues, getNumericDocValues, getSortedDocValues, getSortedNumericDocValues, getSortedSetDocValues, getTermVectors, ramBytesUsed

Methods inherited from class org.apache.lucene.index.LeafReader

addCoreClosedListenerAsReaderClosedListener, docFreq, getContext, getDocCount, getSumDocFreq, getSumTotalTermFreq, postings, postings, removeCoreClosedListenerAsReaderClosedListener, termDocsEnum, termPositionsEnum, terms, totalTermFreq

Methods inherited from class org.apache.lucene.index.IndexReader

addReaderClosedListener, close, decRef, document, document, ensureOpen, equals, getCombinedCoreAndDeletesKey, getCoreCacheKey, getRefCount, getTermVector, hasDeletions, hashCode, incRef, leaves, numDeletedDocs, registerParentReader, removeReaderClosedListener, tryIncRef

Methods inherited from class java.lang.Object

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

Field Detail

in

protected final CodecReader in

The underlying CodecReader instance.

Constructor Detail

FilterCodecReader

public FilterCodecReader(CodecReader in)

Creates a new FilterCodecReader.

Parameters:

in - the underlying CodecReader instance.

Method Detail

getFieldsReader

public StoredFieldsReader getFieldsReader()

Description copied from class: CodecReader

Expert: retrieve thread-private StoredFieldsReader

Specified by:

getFieldsReader in class CodecReader

getTermVectorsReader

public TermVectorsReader getTermVectorsReader()

Description copied from class: CodecReader

Expert: retrieve thread-private TermVectorsReader

Specified by:

getTermVectorsReader in class CodecReader

getNormsReader

public NormsProducer getNormsReader()

Description copied from class: CodecReader

Expert: retrieve underlying NormsProducer

Specified by:

getNormsReader in class CodecReader

getDocValuesReader

public DocValuesProducer getDocValuesReader()

Description copied from class: CodecReader

Expert: retrieve underlying DocValuesProducer

Specified by:

getDocValuesReader in class CodecReader

getPostingsReader

public FieldsProducer getPostingsReader()

Description copied from class: CodecReader

Expert: retrieve underlying FieldsProducer

Specified by:

getPostingsReader in class CodecReader

getLiveDocs

public Bits getLiveDocs()

Description copied from class: LeafReader

Returns the Bits representing live (not deleted) docs. A set bit indicates the doc ID has not been deleted. If this method returns null it means there are no deleted documents (all documents are live). The returned instance has been safely published for use by multiple threads without additional synchronization.

Specified by:

getLiveDocs in class LeafReader

getFieldInfos

public FieldInfos getFieldInfos()

Description copied from class: LeafReader

Get the FieldInfos describing all fields in this reader.

Specified by:

getFieldInfos in class LeafReader

numDocs

public int numDocs()

Description copied from class: IndexReader

Returns the number of documents in this index.

Specified by:

numDocs in class IndexReader

maxDoc

public int maxDoc()

Description copied from class: IndexReader

Returns one greater than the largest possible document number. This may be used to, e.g., determine how big to allocate an array which will have an element for every document number in an index.

Specified by:

maxDoc in class IndexReader

addCoreClosedListener

public void addCoreClosedListener(LeafReader.CoreClosedListener listener)

Description copied from class: LeafReader

Expert: adds a CoreClosedListener to this reader's shared core

Specified by:

addCoreClosedListener in class LeafReader

removeCoreClosedListener

public void removeCoreClosedListener(LeafReader.CoreClosedListener listener)

Description copied from class: LeafReader

Expert: removes a CoreClosedListener from this reader's shared core

Specified by:

removeCoreClosedListener in class LeafReader