Package org.apache.lucene.codecs

Class FlatVectorsWriter

java.lang.Object

org.apache.lucene.codecs.FlatVectorsWriter

All Implemented Interfaces:

Closeable, AutoCloseable, Accountable

Direct Known Subclasses:

Lucene99FlatVectorsWriter, Lucene99ScalarQuantizedVectorsWriter

public abstract class FlatVectorsWriter
extends Object
implements Accountable, Closeable

Vectors' writer for a field that allows additional indexing logic to be implemented by the caller

WARNING: This API is experimental and might change in incompatible ways in the next release.

Field Summary

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

NULL_ACCOUNTABLE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	FlatVectorsWriter()	Sole constructor

Method Summary

Modifier and Type	Method	Description
abstract FlatFieldVectorsWriter<?>	addField(FieldInfo fieldInfo, KnnFieldVectorsWriter<?> indexWriter)	Add a new field for indexing, allowing the user to provide a writer that the flat vectors writer can delegate to if additional indexing logic is required.
abstract void	finish()	Called once at the end before close
abstract void	flush(int maxDoc, Sorter.DocMap sortMap)	Flush all buffered data on disk *
void	mergeOneField(FieldInfo fieldInfo, MergeState mergeState)	Write field for merging
abstract CloseableRandomVectorScorerSupplier	mergeOneFieldToIndex(FieldInfo fieldInfo, MergeState mergeState)	Write the field for merging, providing a scorer over the newly merged flat vectors.

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, ramBytesUsed

Methods inherited from interface java.io.Closeable

close

Constructor Detail

FlatVectorsWriter

protected FlatVectorsWriter()

Sole constructor

Method Detail

addField

public abstract FlatFieldVectorsWriter<?> addField(FieldInfo fieldInfo,
                                                   KnnFieldVectorsWriter<?> indexWriter)
                                            throws IOException

Add a new field for indexing, allowing the user to provide a writer that the flat vectors writer can delegate to if additional indexing logic is required.

Parameters:

fieldInfo - fieldInfo of the field to add

indexWriter - the writer to delegate to, can be null

Returns:

a writer for the field

Throws:

IOException - if an I/O error occurs when adding the field

mergeOneFieldToIndex

public abstract CloseableRandomVectorScorerSupplier mergeOneFieldToIndex(FieldInfo fieldInfo,
                                                                         MergeState mergeState)
                                                                  throws IOException

Write the field for merging, providing a scorer over the newly merged flat vectors. This way any additional merging logic can be implemented by the user of this class.

Parameters:

fieldInfo - fieldInfo of the field to merge

mergeState - mergeState of the segments to merge

Returns:

a scorer over the newly merged flat vectors, which should be closed as it holds a temporary file handle to read over the newly merged vectors

Throws:

IOException - if an I/O error occurs when merging

mergeOneField

public void mergeOneField(FieldInfo fieldInfo,
                          MergeState mergeState)
                   throws IOException

Write field for merging

Throws:

IOException

finish

public abstract void finish()
                     throws IOException

Called once at the end before close

Throws:

IOException

flush

public abstract void flush(int maxDoc,
                           Sorter.DocMap sortMap)
                    throws IOException

Flush all buffered data on disk *

Throws:

IOException