All Classes Interface Summary Class Summary Enum Summary 
| Class | Description | 
| BlockDecoder | Decodes the raw bytes of a block when the index is read, according to the  BlockEncoder
 used during the writing of the index. | 
| BlockEncoder | Encodes the raw bytes of a block when the index is written. | 
| BlockEncoder.WritableBytes | Writable byte buffer. | 
| BlockHeader | Block header containing block metadata. | 
| BlockHeader.Serializer | Reads/writes block header. | 
| BlockLine | One term block line. | 
| BlockLine.Serializer | Reads/writes block lines with terms encoded incrementally inside a block. | 
| BlockReader | Seeks the block corresponding to a given term, read the block bytes, and scans the block terms. | 
| BlockTermsReader | Handles a terms dict, but decouples all details of doc/freqs/positions reading to an instance of
  PostingsReaderBase. | 
| BlockTermsWriter | Writes terms dict, block-encoding (column stride) each term's metadata for each set of terms
 between two index terms. | 
| BlockTreeOrdsPostingsFormat |  | 
| BlockWriter | Writes blocks in the block file. | 
| BloomFilterFactory | Class used to create index-time  FuzzySet appropriately configured for each field. | 
| BloomFilteringPostingsFormat | A  PostingsFormat useful for low doc-frequency fields such as primary keys. | 
| DefaultBloomFilterFactory | Default policy is to allocate a bitset with 10% saturation given a unique term per document. | 
| DeltaBaseTermStateSerializer | TermState serializer which encodes each file pointer as a delta relative to a base file
 pointer. | 
| DirectPostingsFormat | Wraps  Lucene90PostingsFormat format for on-disk storage, but then at read time loads and
 stores all terms and postings directly in RAM as byte[], int[]. | 
| FieldMetadata | Metadata and stats for one field in the index. | 
| FieldMetadata.Serializer | Reads/writes field metadata. | 
| FieldMetadataTermState |  | 
| FixedGapTermsIndexReader | TermsIndexReader for simple every Nth terms indexes. | 
| FixedGapTermsIndexWriter | Selects every Nth term as and index term, and hold term bytes (mostly) fully expanded in memory. | 
| FSTDictionary | Immutable stateless  FST-based index dictionary kept in memory. | 
| FSTDictionary.BrowserSupplier |  | 
| FSTDictionary.Builder |  | 
| FSTPostingsFormat | FST term dict + Lucene50PBF | 
| FSTTermsReader | FST-based terms dictionary reader. | 
| FSTTermsWriter | FST-based term dict, using metadata as FST output. | 
| FuzzySet | A class used to represent a set of many, potentially large, values (e.g. | 
| FuzzySet.ContainsResult |  | 
| HashFunction | Base class for hashing functions that can be referred to by name. | 
| IndexDictionary | Immutable stateless index dictionary kept in RAM. | 
| IndexDictionary.Browser |  | 
| IndexDictionary.BrowserSupplier |  | 
| IndexDictionary.Builder |  | 
| IntersectBlockReader |  | 
| IntersectBlockReader.BlockIteration | Block iteration order. | 
| MurmurHash64 | This is a very fast, non-cryptographic hash suitable for general hash-based lookup. | 
| OrdsBlockTreeTermsReader |  | 
| OrdsBlockTreeTermsWriter | This is just like  Lucene90BlockTreeTermsWriter, except it also stores a version per term,
 and adds a method to its TermsEnum implementation to seekExact only if the version is >= the
 specified version. | 
| OrdsSegmentTermsEnum | Iterates through terms in this field. | 
| RamUsageUtil | Utility methods to estimate the RAM usage of objects. | 
| SimpleTextCodec | plain text index format. | 
| SimpleTextCompoundFormat | plain text compound format. | 
| SimpleTextFieldInfosFormat | plaintext field infos format | 
| SimpleTextKnnVectorsFormat | For debugging, curiosity, transparency only!! Do not use this codec in production. | 
| SimpleTextKnnVectorsReader | Reads vector values from a simple text format. | 
| SimpleTextKnnVectorsWriter | Writes vector-valued fields in a plain text format | 
| SimpleTextLiveDocsFormat | reads/writes plaintext live docs | 
| SimpleTextNormsFormat | plain-text norms format. | 
| SimpleTextNormsFormat.SimpleTextNormsConsumer | Writes plain-text norms. | 
| SimpleTextNormsFormat.SimpleTextNormsProducer | Reads plain-text norms. | 
| SimpleTextPointsFormat | For debugging, curiosity, transparency only!! Do not use this codec in production. | 
| SimpleTextSegmentInfoFormat | plain text segments file format. | 
| SimpleTextStoredFieldsFormat | plain text stored fields format. | 
| SimpleTextStoredFieldsReader | reads plaintext stored fields | 
| SimpleTextStoredFieldsWriter | Writes plain-text stored fields. | 
| SimpleTextTermVectorsFormat | plain text term vectors format. | 
| SimpleTextTermVectorsReader | Reads plain-text term vectors. | 
| SimpleTextTermVectorsWriter | Writes plain-text term vectors. | 
| STBlockLine |  | 
| STBlockLine.Serializer | Reads block lines encoded incrementally, with all fields corresponding to the term of the line. | 
| STBlockReader | Reads terms blocks with the Shared Terms format. | 
| STBlockWriter | Writes terms blocks with the Shared Terms format. | 
| STIntersectBlockReader |  | 
| STMergingBlockReader | TermsEnum used when merging segments, to enumerate the terms of
 an input segment and get all the fields  TermStates of each term. | 
| STUniformSplitPostingsFormat | PostingsFormat based on the Uniform Split technique and supporting Shared Terms. | 
| STUniformSplitTerms | Extends  UniformSplitTerms for a shared-terms dictionary, with all the fields of a term in
 the same block line. | 
| STUniformSplitTermsReader | 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. | 
| STUniformSplitTermsWriter | Extends  UniformSplitTermsWriter by sharing all the fields terms in the same dictionary
 and by writing all the fields of a term in the same block line. | 
| TermBytes | Term of a block line. | 
| TermsIndexReaderBase | BlockTermsReader interacts with an instance of this class to manage its terms index. | 
| TermsIndexReaderBase.FieldIndexEnum | Similar to TermsEnum, except, the only "metadata" it reports for a given indexed term is the
 long fileOffset into the main terms dictionary file. | 
| TermsIndexWriterBase |  | 
| UniformSplitPostingsFormat |  | 
| UniformSplitTerms | Terms based on the Uniform Split technique. | 
| UniformSplitTermsReader | A block-based terms index and dictionary based on the Uniform Split technique. | 
| UniformSplitTermsWriter | A block-based terms index and dictionary that assigns terms to nearly uniform length blocks. | 
| UnionFieldMetadataBuilder |  | 
| VariableGapTermsIndexReader |  | 
| VariableGapTermsIndexWriter |  | 
| VariableGapTermsIndexWriter.EveryNOrDocFreqTermSelector | Sets an index term when docFreq >= docFreqThresh, or every interval terms. | 
| VariableGapTermsIndexWriter.EveryNTermSelector |  | 
| VariableGapTermsIndexWriter.IndexTermSelector | Hook for selecting which terms should be placed in the terms index. |