Module org.apache.lucene.core

Package org.apache.lucene.codecs.lucene99

Class Lucene99FlatVectorsReader

java.lang.Object

org.apache.lucene.codecs.hnsw.FlatVectorsReader

org.apache.lucene.codecs.lucene99.Lucene99FlatVectorsReader

All Implemented Interfaces:

Closeable, AutoCloseable, Accountable

public final class Lucene99FlatVectorsReader
extends FlatVectorsReader

Reads vectors from the index segments.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	Lucene99FlatVectorsReader.FieldEntry

Field Summary

Fields

Modifier and Type	Field	Description
private final Map<String,Lucene99FlatVectorsReader.FieldEntry>	fields
private static final long	SHALLOW_SIZE
private final IndexInput	vectorData

Fields inherited from class org.apache.lucene.codecs.hnsw.FlatVectorsReader

vectorScorer

Fields inherited from interface org.apache.lucene.util.Accountable

NULL_ACCOUNTABLE

Constructor Summary

Constructors

Constructor	Description
Lucene99FlatVectorsReader(SegmentReadState state, FlatVectorsScorer scorer)

Method Summary

Modifier and Type	Method	Description
void	checkIntegrity()	Checks consistency of this reader.
void	close()
ByteVectorValues	getByteVectorValues(String field)	Returns the ByteVectorValues for the given field.
FloatVectorValues	getFloatVectorValues(String field)	Returns the FloatVectorValues for the given field.
RandomVectorScorer	getRandomVectorScorer(String field, byte[] target)	Returns a RandomVectorScorer for the given field and target vector.
RandomVectorScorer	getRandomVectorScorer(String field, float[] target)	Returns a RandomVectorScorer for the given field and target vector.
private static IndexInput	openDataInput(SegmentReadState state, int versionMeta, String fileExtension, String codecName, IOContext context)
long	ramBytesUsed()	Return the memory usage of this object in bytes.
private Lucene99FlatVectorsReader.FieldEntry	readField(IndexInput input, FieldInfo info)
private void	readFields(ChecksumIndexInput meta, FieldInfos infos)
private int	readMetadata(SegmentReadState state)
private void	validateFieldEntry(FieldInfo info, Lucene99FlatVectorsReader.FieldEntry fieldEntry)

Methods inherited from class org.apache.lucene.codecs.hnsw.FlatVectorsReader

getFlatVectorScorer

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.lucene.util.Accountable

getChildResources

Field Details

SHALLOW_SIZE

private static final long SHALLOW_SIZE

fields

private final Map<String,Lucene99FlatVectorsReader.FieldEntry> fields

vectorData

private final IndexInput vectorData

Constructor Details

Lucene99FlatVectorsReader

public Lucene99FlatVectorsReader(SegmentReadState state,
 FlatVectorsScorer scorer)
                          throws IOException

Throws:

IOException

Method Details

readMetadata

private int readMetadata(SegmentReadState state)
                  throws IOException

Throws:

IOException

openDataInput

private static IndexInput openDataInput(SegmentReadState state,
 int versionMeta,
 String fileExtension,
 String codecName,
 IOContext context)
                                 throws IOException

Throws:

IOException

readFields

private void readFields(ChecksumIndexInput meta,
 FieldInfos infos)
                 throws IOException

Throws:

IOException

validateFieldEntry

private void validateFieldEntry(FieldInfo info,
 Lucene99FlatVectorsReader.FieldEntry fieldEntry)

readField

private Lucene99FlatVectorsReader.FieldEntry readField(IndexInput input,
 FieldInfo info)
                                                throws IOException

Throws:

IOException

ramBytesUsed

public long ramBytesUsed()

Description copied from interface: Accountable

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

checkIntegrity

public void checkIntegrity()
                    throws IOException

Description copied from class: FlatVectorsReader

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 FlatVectorsReader

Throws:

IOException

getFloatVectorValues

public FloatVectorValues getFloatVectorValues(String field)
                                       throws IOException

Description copied from class: FlatVectorsReader

Returns the FloatVectorValues for the given field. The behavior is undefined if the given field doesn't have KNN vectors enabled on its FieldInfo. The return value is never null.

Specified by:

getFloatVectorValues in class FlatVectorsReader

Throws:

IOException

getByteVectorValues

public ByteVectorValues getByteVectorValues(String field)
                                     throws IOException

Description copied from class: FlatVectorsReader

Returns the ByteVectorValues for the given field. The behavior is undefined if the given field doesn't have KNN vectors enabled on its FieldInfo. The return value is never null.

Specified by:

getByteVectorValues in class FlatVectorsReader

Throws:

IOException

getRandomVectorScorer

public RandomVectorScorer getRandomVectorScorer(String field,
 float[] target)
                                         throws IOException

Description copied from class: FlatVectorsReader

Returns a RandomVectorScorer for the given field and target vector.

Specified by:

getRandomVectorScorer in class FlatVectorsReader

Parameters:

field - the field to search

target - the target vector

Returns:

a RandomVectorScorer for the given field and target vector.

Throws:

IOException - if an I/O error occurs when reading from the index.

getRandomVectorScorer

public RandomVectorScorer getRandomVectorScorer(String field,
 byte[] target)
                                         throws IOException

Description copied from class: FlatVectorsReader

Returns a RandomVectorScorer for the given field and target vector.

Specified by:

getRandomVectorScorer in class FlatVectorsReader

Parameters:

field - the field to search

target - the target vector

Returns:

a RandomVectorScorer for the given field and target vector.

Throws:

IOException - if an I/O error occurs when reading from the index.

close

public void close()
           throws IOException

Throws:

IOException