Package org.apache.lucene.codecs.uniformsplit.sharedterms

Class STUniformSplitTermsReader

java.lang.Object

org.apache.lucene.index.Fields

org.apache.lucene.codecs.FieldsProducer

org.apache.lucene.codecs.uniformsplit.UniformSplitTermsReader

org.apache.lucene.codecs.uniformsplit.sharedterms.STUniformSplitTermsReader

All Implemented Interfaces:

Closeable, AutoCloseable, Iterable<String>

public class STUniformSplitTermsReader
extends UniformSplitTermsReader

A block-based terms index and dictionary based on the Uniform Split technique, and sharing all the fields terms in the same dictionary, with all the fields of a term in the same block line.

See Also:

• STUniformSplitTermsWriter

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

Field Summary

Fields inherited from class org.apache.lucene.codecs.uniformsplit.UniformSplitTermsReader

blockInput, dictionaryInput, fieldToTermsMap, postingsReader, sortedFieldNames, version

Fields inherited from class org.apache.lucene.index.Fields

EMPTY_ARRAY

Constructor Summary

Constructors

Modifier	Constructor	Description
	STUniformSplitTermsReader(PostingsReaderBase postingsReader, SegmentReadState state, BlockDecoder blockDecoder, boolean dictionaryOnHeap)
protected	STUniformSplitTermsReader(PostingsReaderBase postingsReader, SegmentReadState state, BlockDecoder blockDecoder, boolean dictionaryOnHeap, FieldMetadata.Serializer fieldMetadataReader, String codecName, int versionStart, int versionCurrent, String termsBlocksExtension, String dictionaryExtension)

Method Summary

Modifier and Type	Method	Description
protected FieldMetadata	createUnionFieldMetadata(Iterable<FieldMetadata> fieldMetadataIterable)	Creates a virtual FieldMetadata that is the union of the given FieldMetadatas.
protected void	fillFieldMap(PostingsReaderBase postingsReader, SegmentReadState state, BlockDecoder blockDecoder, boolean dictionaryOnHeap, IndexInput dictionaryInput, IndexInput blockInput, Collection<FieldMetadata> fieldMetadataCollection, FieldInfos fieldInfos)

Methods inherited from class org.apache.lucene.codecs.uniformsplit.UniformSplitTermsReader

checkIntegrity, close, createDictionaryBrowserSupplier, iterator, readEncodedFieldsMetadata, readFieldsMetadata, readUnencodedFieldsMetadata, seekFieldsMetadata, size, terms

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

getMergeInstance

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Details

STUniformSplitTermsReader

public STUniformSplitTermsReader(PostingsReaderBase postingsReader,
 SegmentReadState state,
 BlockDecoder blockDecoder,
 boolean dictionaryOnHeap)
                          throws IOException

Throws:

IOException

See Also:

• UniformSplitTermsReader(PostingsReaderBase, SegmentReadState, BlockDecoder, boolean)

STUniformSplitTermsReader

protected STUniformSplitTermsReader(PostingsReaderBase postingsReader,
 SegmentReadState state,
 BlockDecoder blockDecoder,
 boolean dictionaryOnHeap,
 FieldMetadata.Serializer fieldMetadataReader,
 String codecName,
 int versionStart,
 int versionCurrent,
 String termsBlocksExtension,
 String dictionaryExtension)
                             throws IOException

Throws:

IOException

See Also:

• UniformSplitTermsReader(PostingsReaderBase, SegmentReadState, BlockDecoder, boolean)

Method Details

fillFieldMap

protected void fillFieldMap(PostingsReaderBase postingsReader,
 SegmentReadState state,
 BlockDecoder blockDecoder,
 boolean dictionaryOnHeap,
 IndexInput dictionaryInput,
 IndexInput blockInput,
 Collection<FieldMetadata> fieldMetadataCollection,
 FieldInfos fieldInfos)
                     throws IOException

Overrides:

fillFieldMap in class UniformSplitTermsReader

Throws:

IOException

createUnionFieldMetadata

protected FieldMetadata createUnionFieldMetadata(Iterable<FieldMetadata> fieldMetadataIterable)

Creates a virtual FieldMetadata that is the union of the given FieldMetadatas. Its FieldMetadata.getFirstBlockStartFP(), FieldMetadata.getLastBlockStartFP() and FieldMetadata.getLastTerm() are respectively the min and max among the FieldMetadatas provided as parameter.