org.apache.lucene.codecs.compressing

Class CompressingTermVectorsReader

java.lang.Object

org.apache.lucene.codecs.TermVectorsReader

org.apache.lucene.codecs.compressing.CompressingTermVectorsReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Cloneable, Accountable

public final class CompressingTermVectorsReader
extends TermVectorsReader
implements java.io.Closeable

TermVectorsReader for CompressingTermVectorsFormat.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	CompressingTermVectorsReader.TVFields
private static class	CompressingTermVectorsReader.TVPostingsEnum
private static class	CompressingTermVectorsReader.TVTerms
private static class	CompressingTermVectorsReader.TVTermsEnum

Field Summary

Fields

Modifier and Type	Field and Description
private int	chunkSize
private boolean	closed
private CompressionMode	compressionMode
private Decompressor	decompressor
private FieldInfos	fieldInfos
(package private) CompressingStoredFieldsIndexReader	indexReader
private long	maxPointer
private long	numChunks
private long	numDirtyChunks
private int	numDocs
private int	packedIntsVersion
private BlockPackedReaderIterator	reader
(package private) IndexInput	vectorsStream
private int	version

Constructor Summary

Constructors

Modifier	Constructor and Description
private	CompressingTermVectorsReader(CompressingTermVectorsReader reader)
	CompressingTermVectorsReader(Directory d, SegmentInfo si, java.lang.String segmentSuffix, FieldInfos fn, IOContext context, java.lang.String formatName, CompressionMode compressionMode) Sole constructor.

Method Summary

Modifier and Type	Method and Description
void	checkIntegrity() Checks consistency of this reader.
TermVectorsReader	clone() Create a clone that one caller at a time may use to read term vectors.
void	close()
private void	ensureOpen()
Fields	get(int doc) Returns term vectors for this document, or null if term vectors were not indexed.
java.util.Collection<Accountable>	getChildResources() Returns nested resources of this class.
(package private) int	getChunkSize()
(package private) CompressionMode	getCompressionMode()
(package private) CompressingStoredFieldsIndexReader	getIndexReader()
(package private) long	getMaxPointer()
(package private) long	getNumChunks()
(package private) long	getNumDirtyChunks()
(package private) int	getPackedIntsVersion()
(package private) IndexInput	getVectorsStream()
(package private) int	getVersion()
private int[][]	positionIndex(int skip, int numFields, PackedInts.Reader numTerms, int[] termFreqs)
long	ramBytesUsed() Return the memory usage of this object in bytes.
private int[][]	readPositions(int skip, int numFields, PackedInts.Reader flags, PackedInts.Reader numTerms, int[] termFreqs, int flag, int totalPositions, int[][] positionIndex)
private static int	sum(int[] arr)
java.lang.String	toString()

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

getMergeInstance

Methods inherited from class java.lang.Object

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

Field Detail

fieldInfos

private final FieldInfos fieldInfos

indexReader

final CompressingStoredFieldsIndexReader indexReader

vectorsStream

final IndexInput vectorsStream

version

private final int version

packedIntsVersion

private final int packedIntsVersion

compressionMode

private final CompressionMode compressionMode

decompressor

private final Decompressor decompressor

chunkSize

private final int chunkSize

numDocs

private final int numDocs

closed

private boolean closed

reader

private final BlockPackedReaderIterator reader

numChunks

private final long numChunks

numDirtyChunks

private final long numDirtyChunks

maxPointer

private final long maxPointer

Constructor Detail

CompressingTermVectorsReader

private CompressingTermVectorsReader(CompressingTermVectorsReader reader)

CompressingTermVectorsReader

public CompressingTermVectorsReader(Directory d,
                                    SegmentInfo si,
                                    java.lang.String segmentSuffix,
                                    FieldInfos fn,
                                    IOContext context,
                                    java.lang.String formatName,
                                    CompressionMode compressionMode)
                             throws java.io.IOException

Sole constructor.

Throws:

java.io.IOException

Method Detail

getCompressionMode

CompressionMode getCompressionMode()

getChunkSize

int getChunkSize()

getPackedIntsVersion

int getPackedIntsVersion()

getVersion

int getVersion()

getIndexReader

CompressingStoredFieldsIndexReader getIndexReader()

getVectorsStream

IndexInput getVectorsStream()

getMaxPointer

long getMaxPointer()

getNumChunks

long getNumChunks()

getNumDirtyChunks

long getNumDirtyChunks()

ensureOpen

private void ensureOpen()
                 throws AlreadyClosedException

Throws:

AlreadyClosedException - if this TermVectorsReader is closed

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Throws:

java.io.IOException

clone

public TermVectorsReader clone()

Description copied from class: TermVectorsReader

Create a clone that one caller at a time may use to read term vectors.

Specified by:

clone in class TermVectorsReader

get

public Fields get(int doc)
           throws java.io.IOException

Description copied from class: TermVectorsReader

Returns term vectors for this document, or null if term vectors were not indexed. If offsets are available they are in an OffsetAttribute available from the PostingsEnum.

Specified by:

get in class TermVectorsReader

Throws:

java.io.IOException

positionIndex

private int[][] positionIndex(int skip,
                              int numFields,
                              PackedInts.Reader numTerms,
                              int[] termFreqs)

readPositions

private int[][] readPositions(int skip,
                              int numFields,
                              PackedInts.Reader flags,
                              PackedInts.Reader numTerms,
                              int[] termFreqs,
                              int flag,
                              int totalPositions,
                              int[][] positionIndex)
                       throws java.io.IOException

Throws:

java.io.IOException

sum

private static int sum(int[] arr)

ramBytesUsed

public long ramBytesUsed()

Description copied from interface: Accountable

Return the memory usage of this object in bytes. Negative values are illegal.

Specified by:

ramBytesUsed in interface Accountable

getChildResources

public java.util.Collection<Accountable> getChildResources()

Description copied from interface: Accountable

Returns nested resources of this class. The result should be a point-in-time snapshot (to avoid race conditions).

Specified by:

getChildResources in interface Accountable

See Also:

Accountables

checkIntegrity

public void checkIntegrity()
                    throws java.io.IOException

Description copied from class: TermVectorsReader

Checks consistency of this reader.

Note that this may be costly in terms of I/O, e.g. may involve computing a checksum value against large data files.

Specified by:

checkIntegrity in class TermVectorsReader

Throws:

java.io.IOException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object