Package org.apache.lucene.codecs.lucene90.compressing

Class Lucene90CompressingStoredFieldsReader

java.lang.Object

org.apache.lucene.codecs.StoredFieldsReader

org.apache.lucene.codecs.lucene90.compressing.Lucene90CompressingStoredFieldsReader

All Implemented Interfaces:

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

public final class Lucene90CompressingStoredFieldsReader
extends StoredFieldsReader

StoredFieldsReader impl for Lucene90CompressingStoredFieldsFormat.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	Lucene90CompressingStoredFieldsReader.BlockState	Keeps state about the current block of documents.
(package private) static class	Lucene90CompressingStoredFieldsReader.SerializedDocument	A serialized document, you need to decode its input in order to get an actual Document.

Field Summary

Fields

Modifier and Type	Field	Description
private int	chunkSize
private boolean	closed
private CompressionMode	compressionMode
private Decompressor	decompressor
private FieldInfos	fieldInfos
private IndexInput	fieldsStream
private FieldsIndex	indexReader
private long	maxPointer
private boolean	merging
private long	numChunks
private long	numDirtyChunks
private long	numDirtyDocs
private int	numDocs
private Lucene90CompressingStoredFieldsReader.BlockState	state
private int	version

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Lucene90CompressingStoredFieldsReader(Lucene90CompressingStoredFieldsReader reader, boolean merging)
	Lucene90CompressingStoredFieldsReader(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.
StoredFieldsReader	clone()
void	close()	Close the underlying IndexInputs.
(package private) Lucene90CompressingStoredFieldsReader.SerializedDocument	document(int docID)
private void	ensureOpen()
(package private) int	getChunkSize()
(package private) CompressionMode	getCompressionMode()
(package private) IndexInput	getFieldsStream()
(package private) FieldsIndex	getIndexReader()
(package private) long	getMaxPointer()
StoredFieldsReader	getMergeInstance()	Returns an instance optimized for merging.
(package private) long	getNumChunks()
(package private) long	getNumDirtyChunks()
(package private) long	getNumDirtyDocs()
(package private) int	getNumDocs()
(package private) int	getVersion()
(package private) boolean	isLoaded(int docID)	Checks if a given docID was loaded in the current block state.
private static void	readField(DataInput in, StoredFieldVisitor visitor, FieldInfo info, int bits)
(package private) static long	readTLong(DataInput in)	Reads a long in a variable-length format.
(package private) static double	readZDouble(DataInput in)	Reads a double in a variable-length format.
(package private) static float	readZFloat(DataInput in)	Reads a float in a variable-length format.
private static void	skipField(DataInput in, int bits)
java.lang.String	toString()
void	visitDocument(int docID, StoredFieldVisitor visitor)	Visit the stored fields for document docID

Methods inherited from class java.lang.Object

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

Field Detail

version

private final int version

fieldInfos

private final FieldInfos fieldInfos

indexReader

private final FieldsIndex indexReader

maxPointer

private final long maxPointer

fieldsStream

private final IndexInput fieldsStream

chunkSize

private final int chunkSize

compressionMode

private final CompressionMode compressionMode

decompressor

private final Decompressor decompressor

numDocs

private final int numDocs

merging

private final boolean merging

state

private final Lucene90CompressingStoredFieldsReader.BlockState state

numChunks

private final long numChunks

numDirtyChunks

private final long numDirtyChunks

numDirtyDocs

private final long numDirtyDocs

closed

private boolean closed

Constructor Detail

Lucene90CompressingStoredFieldsReader

private Lucene90CompressingStoredFieldsReader(Lucene90CompressingStoredFieldsReader reader,
                                              boolean merging)

Lucene90CompressingStoredFieldsReader

public Lucene90CompressingStoredFieldsReader(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 FieldsReader is closed

close

public void close()
           throws java.io.IOException

Close the underlying IndexInputs.

Throws:

java.io.IOException

readField

private static void readField(DataInput in,
                              StoredFieldVisitor visitor,
                              FieldInfo info,
                              int bits)
                       throws java.io.IOException

Throws:

java.io.IOException

skipField

private static void skipField(DataInput in,
                              int bits)
                       throws java.io.IOException

Throws:

java.io.IOException

readZFloat

static float readZFloat(DataInput in)
                 throws java.io.IOException

Reads a float in a variable-length format. Reads between one and five bytes. Small integral values typically take fewer bytes.

Throws:

java.io.IOException

readZDouble

static double readZDouble(DataInput in)
                   throws java.io.IOException

Reads a double in a variable-length format. Reads between one and nine bytes. Small integral values typically take fewer bytes.

Throws:

java.io.IOException

readTLong

static long readTLong(DataInput in)
               throws java.io.IOException

Reads a long in a variable-length format. Reads between one andCorePropLo nine bytes. Small values typically take fewer bytes.

Throws:

java.io.IOException

document

Lucene90CompressingStoredFieldsReader.SerializedDocument document(int docID)
                                                           throws java.io.IOException

Throws:

java.io.IOException

isLoaded

boolean isLoaded(int docID)

Checks if a given docID was loaded in the current block state.

visitDocument

public void visitDocument(int docID,
                          StoredFieldVisitor visitor)
                   throws java.io.IOException

Description copied from class: StoredFieldsReader

Visit the stored fields for document docID

Specified by:

visitDocument in class StoredFieldsReader

Throws:

java.io.IOException

clone

public StoredFieldsReader clone()

Specified by:

clone in class StoredFieldsReader

getMergeInstance

public StoredFieldsReader getMergeInstance()

Description copied from class: StoredFieldsReader

Returns an instance optimized for merging. This instance may not be cloned.

The default implementation returns this

Overrides:

getMergeInstance in class StoredFieldsReader

getVersion

int getVersion()

getCompressionMode

CompressionMode getCompressionMode()

getIndexReader

FieldsIndex getIndexReader()

getMaxPointer

long getMaxPointer()

getFieldsStream

IndexInput getFieldsStream()

getChunkSize

int getChunkSize()

getNumDirtyDocs

long getNumDirtyDocs()

getNumDirtyChunks

long getNumDirtyChunks()

getNumChunks

long getNumChunks()

getNumDocs

int getNumDocs()

checkIntegrity

public void checkIntegrity()
                    throws java.io.IOException

Description copied from class: StoredFieldsReader

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 StoredFieldsReader

Throws:

java.io.IOException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object