Package org.apache.lucene.backward_codecs.lucene50.compressing

Class Lucene50CompressingTermVectorsReader

java.lang.Object

org.apache.lucene.codecs.TermVectorsReader

org.apache.lucene.backward_codecs.lucene50.compressing.Lucene50CompressingTermVectorsReader

All Implemented Interfaces:

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

public final class Lucene50CompressingTermVectorsReader
extends TermVectorsReader

TermVectorsReader for Lucene50CompressingTermVectorsFormat.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	Lucene50CompressingTermVectorsReader.TVFields
private static class	Lucene50CompressingTermVectorsReader.TVPostingsEnum
private static class	Lucene50CompressingTermVectorsReader.TVTerms
private static class	Lucene50CompressingTermVectorsReader.TVTermsEnum

Field Summary

Fields

Modifier and Type	Field	Description
private int	chunkSize
private boolean	closed
private CompressionMode	compressionMode
private Decompressor	decompressor
private FieldInfos	fieldInfos
(package private) static int	FLAGS_BITS
(package private) FieldsIndex	indexReader
private long	maxPointer
(package private) static int	META_VERSION_START
private int	numDocs
(package private) static int	OFFSETS
(package private) static int	PACKED_BLOCK_SIZE
private int	packedIntsVersion
(package private) static int	PAYLOADS
(package private) static int	POSITIONS
private BlockPackedReaderIterator	reader
(package private) static java.lang.String	VECTORS_EXTENSION
(package private) static java.lang.String	VECTORS_INDEX_CODEC_NAME
(package private) static java.lang.String	VECTORS_INDEX_EXTENSION
(package private) static java.lang.String	VECTORS_META_EXTENSION
(package private) IndexInput	vectorsStream
private int	version
(package private) static int	VERSION_CURRENT
(package private) static int	VERSION_META	Version where all metadata were moved to the meta file.
(package private) static int	VERSION_NUM_CHUNKS	Version where numChunks is explicitly recorded in meta file
(package private) static int	VERSION_OFFHEAP_INDEX
(package private) static int	VERSION_START

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Lucene50CompressingTermVectorsReader(Lucene50CompressingTermVectorsReader reader)
	Lucene50CompressingTermVectorsReader(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	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.
private int[][]	positionIndex(int skip, int numFields, PackedInts.Reader numTerms, int[] termFreqs)
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

VECTORS_EXTENSION

static final java.lang.String VECTORS_EXTENSION

See Also:

Constant Field Values

VECTORS_INDEX_EXTENSION

static final java.lang.String VECTORS_INDEX_EXTENSION

See Also:

Constant Field Values

VECTORS_META_EXTENSION

static final java.lang.String VECTORS_META_EXTENSION

See Also:

Constant Field Values

VECTORS_INDEX_CODEC_NAME

static final java.lang.String VECTORS_INDEX_CODEC_NAME

See Also:

Constant Field Values

VERSION_START

static final int VERSION_START

See Also:

Constant Field Values

VERSION_OFFHEAP_INDEX

static final int VERSION_OFFHEAP_INDEX

See Also:

Constant Field Values

VERSION_META

static final int VERSION_META

Version where all metadata were moved to the meta file.

See Also:

Constant Field Values

VERSION_NUM_CHUNKS

static final int VERSION_NUM_CHUNKS

Version where numChunks is explicitly recorded in meta file

See Also:

Constant Field Values

VERSION_CURRENT

static final int VERSION_CURRENT

See Also:

Constant Field Values

META_VERSION_START

static final int META_VERSION_START

See Also:

Constant Field Values

PACKED_BLOCK_SIZE

static final int PACKED_BLOCK_SIZE

See Also:

Constant Field Values

POSITIONS

static final int POSITIONS

See Also:

Constant Field Values

OFFSETS

static final int OFFSETS

See Also:

Constant Field Values

PAYLOADS

static final int PAYLOADS

See Also:

Constant Field Values

FLAGS_BITS

static final int FLAGS_BITS

fieldInfos

private final FieldInfos fieldInfos

indexReader

final FieldsIndex 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

maxPointer

private final long maxPointer

Constructor Detail

Lucene50CompressingTermVectorsReader

private Lucene50CompressingTermVectorsReader(Lucene50CompressingTermVectorsReader reader)

Lucene50CompressingTermVectorsReader

public Lucene50CompressingTermVectorsReader(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

ensureOpen

private void ensureOpen()
                 throws AlreadyClosedException

Throws:

AlreadyClosedException - if this TermVectorsReader is closed

close

public void close()
           throws java.io.IOException

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)

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