## Uses of Package
org.apache.lucene.index

Packages that use org.apache.lucene.index
org.apache.lucene.analysis: API and code to convert text into indexable/searchable tokens.
org.apache.lucene.analysis.payloads: Provides various convenience classes for creating payloads on Tokens.
org.apache.lucene.analysis.query: Automatically filter high-frequency stopwords.
org.apache.lucene.analysis.tokenattributes: Useful `Attribute`s for text analysis.
org.apache.lucene.benchmark.byTask: Benchmarking Lucene By Tasks.
org.apache.lucene.benchmark.byTask.tasks: Extendable benchmark tasks.
org.apache.lucene.document: The logical representation of a `Document` for indexing and searching.
org.apache.lucene.facet.enhancements: Enhanced category features
org.apache.lucene.facet.enhancements.association: Association category enhancements
org.apache.lucene.facet.index: Indexing of document categories
org.apache.lucene.facet.index.params: Indexing-time specifications for handling facets
org.apache.lucene.facet.index.streaming: Expert: attributes streaming definition for indexing facets
org.apache.lucene.facet.search: Faceted Search API
org.apache.lucene.facet.search.aggregator.association: Association-based aggregators.
org.apache.lucene.facet.search.cache: Caching to speed up facets accumulation.
org.apache.lucene.facet.search.params: Parameters for Faceted Search
org.apache.lucene.facet.search.params.association: Association-based Parameters for Faceted Search.
org.apache.lucene.facet.search.sampling: Sampling for facets accumulation
org.apache.lucene.facet.taxonomy.directory: Taxonomy implemented using a Lucene-Index
org.apache.lucene.facet.util: Various utilities for faceted search
org.apache.lucene.index: Code to maintain and access indices.
org.apache.lucene.index.pruning: Static Index Pruning Tools
org.apache.lucene.misc: Miscellaneous index tools.
org.apache.lucene.queryParser: A simple query parser implemented with JavaCC.
org.apache.lucene.queryParser.complexPhrase: QueryParser which permits complex phrase query syntax eg "(john jon jonathan~) peters*"
org.apache.lucene.queryParser.surround.query: This package contains SrndQuery and its subclasses.
org.apache.lucene.search: Code to search indices.
org.apache.lucene.search.function: Programmatic control over documents scores.
org.apache.lucene.search.grouping: This module enables search result grouping with Lucene, where hits with the same value in the specified single-valued group field are grouped together.
org.apache.lucene.search.highlight: The highlight package contains classes to provide "keyword in context" features typically used to highlight search terms in the text of results pages.
org.apache.lucene.search.join: This modules support index-time and query-time joins.
org.apache.lucene.search.payloads: The payloads package provides Query mechanisms for finding and using payloads.
org.apache.lucene.search.regex: Regular expression Query.
org.apache.lucene.search.similar: Document similarity query generators.
org.apache.lucene.search.spans: The calculus of spans.
org.apache.lucene.search.spell: Suggest alternate spellings for words.
org.apache.lucene.search.vectorhighlight: This is an another highlighter implementation.
org.apache.lucene.spatial.geohash: Support for Geohash encoding, decoding, and filtering.
org.apache.lucene.spatial.tier: Support for filtering based upon geographic location.
org.apache.lucene.store: Binary i/o API, used for all index data.
org.apache.lucene.store.instantiated: InstantiatedIndex, alternative RAM store for small corpora.
org.apache.lucene.util: Some utility classes.

Classes in org.apache.lucene.index used by org.apache.lucene.analysis
Payload A Payload is metadata that can be stored together with each occurrence of a term.

Classes in org.apache.lucene.index used by org.apache.lucene.analysis.payloads
Payload A Payload is metadata that can be stored together with each occurrence of a term.

Classes in org.apache.lucene.index used by org.apache.lucene.analysis.query
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.

Classes in org.apache.lucene.index used by org.apache.lucene.analysis.tokenattributes
Payload A Payload is metadata that can be stored together with each occurrence of a term.

Classes in org.apache.lucene.index used by org.apache.lucene.benchmark.byTask
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
IndexWriter An `IndexWriter` creates and maintains an index.

Classes in org.apache.lucene.index used by org.apache.lucene.benchmark.byTask.tasks
CorruptIndexException This exception is thrown when Lucene detects an inconsistency in the index.
IndexCommit Expert: represents a single commit into an index as seen by the `IndexDeletionPolicy` or `IndexReader`.
IndexDeletionPolicy Expert: policy for deletion of stale `index commits`.
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
IndexWriter An `IndexWriter` creates and maintains an index.
IndexWriterConfig Holds all the configuration of `IndexWriter`.
IndexWriterConfig.OpenMode Specifies the open mode for `IndexWriter`: `IndexWriterConfig.OpenMode.CREATE` - creates a new index or overwrites an existing one.

Classes in org.apache.lucene.index used by org.apache.lucene.document
FieldInfo.IndexOptions Controls how much information is stored in the postings lists.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.enhancements
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.enhancements.association
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.index
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
PayloadProcessorProvider Provides a `PayloadProcessorProvider.ReaderPayloadProcessor` to be used for a `Directory`.
PayloadProcessorProvider.PayloadProcessor Processes the given payload.
PayloadProcessorProvider.ReaderPayloadProcessor Returns a `PayloadProcessorProvider.ReaderPayloadProcessor` for a given `Term` which allows processing the payloads of different terms differently.
Term A Term represents a word from text.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.index.params
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.index.streaming
Payload A Payload is metadata that can be stored together with each occurrence of a term.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.search
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.search.aggregator.association
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.search.cache
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.search.params
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.search.params.association
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.search.sampling
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.taxonomy.directory
CorruptIndexException This exception is thrown when Lucene detects an inconsistency in the index.
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
IndexWriter An `IndexWriter` creates and maintains an index.
IndexWriterConfig Holds all the configuration of `IndexWriter`.
IndexWriterConfig.OpenMode Specifies the open mode for `IndexWriter`: `IndexWriterConfig.OpenMode.CREATE` - creates a new index or overwrites an existing one.

Classes in org.apache.lucene.index used by org.apache.lucene.facet.util
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.

Classes in org.apache.lucene.index used by org.apache.lucene.index
BalancedSegmentMergePolicy.MergePolicyParams Deprecated. Specifies configuration parameters for BalancedSegmentMergePolicy.
CheckIndex.Status Returned from `CheckIndex.checkIndex()` detailing the health and status of the index.
CheckIndex.Status.FieldNormStatus Status from testing field norms.
CheckIndex.Status.SegmentInfoStatus Holds the status of each segment in the index.
CheckIndex.Status.StoredFieldStatus Status from testing stored fields.
CheckIndex.Status.TermIndexStatus Status from testing term index.
CheckIndex.Status.TermVectorStatus Status from testing stored fields.
ConcurrentMergeScheduler.MergeThread
CorruptIndexException This exception is thrown when Lucene detects an inconsistency in the index.
FieldInfo Access to the Fieldable Info file that describes document fields and whether or not they are indexed.
FieldInfo.IndexOptions Controls how much information is stored in the postings lists.
FieldInfos Collection of `FieldInfo`s (accessible by number or by name).
FilterIndexReader A `FilterIndexReader` contains another IndexReader, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
FilterIndexReader.FilterTermDocs Base class for filtering `TermDocs` implementations.
IndexCommit Expert: represents a single commit into an index as seen by the `IndexDeletionPolicy` or `IndexReader`.
IndexDeletionPolicy Expert: policy for deletion of stale `index commits`.
IndexFileNameFilter Filename filter that accept filenames and extensions only created by Lucene.
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
IndexReader.ReaderClosedListener A custom listener that's invoked when the IndexReader is closed.
IndexWriter An `IndexWriter` creates and maintains an index.
IndexWriter.IndexReaderWarmer If `IndexWriter.getReader()` has been called (ie, this writer is in near real-time mode), then after a merge completes, this class can be invoked to warm the reader on the newly merged segment, before the merge commits.
IndexWriter.MaxFieldLength Deprecated. use `LimitTokenCountAnalyzer` instead.
IndexWriterConfig Holds all the configuration of `IndexWriter`.
IndexWriterConfig.OpenMode Specifies the open mode for `IndexWriter`: `IndexWriterConfig.OpenMode.CREATE` - creates a new index or overwrites an existing one.
LogByteSizeMergePolicy This is a `LogMergePolicy` that measures size of a segment as the total byte size of the segment's files.
LogMergePolicy This class implements a `MergePolicy` that tries to merge segments into levels of exponentially increasing size, where each level has fewer segments than the value of the merge factor.
MergePolicy Expert: a MergePolicy determines the sequence of primitive merge operations.
MergePolicy.MergeSpecification A MergeSpecification instance provides the information necessary to perform multiple merges.
MergePolicy.OneMerge OneMerge provides the information necessary to perform an individual primitive merge operation, resulting in a single new segment.
MergeScheduler Expert: `IndexWriter` uses an instance implementing this interface to execute the merges selected by a `MergePolicy`.
MultiReader An IndexReader which reads multiple indexes, appending their content.
PayloadProcessorProvider Provides a `PayloadProcessorProvider.ReaderPayloadProcessor` to be used for a `Directory`.
PayloadProcessorProvider.DirPayloadProcessor Deprecated. Use `PayloadProcessorProvider.ReaderPayloadProcessor` instead.
PayloadProcessorProvider.PayloadProcessor Processes the given payload.
PayloadProcessorProvider.ReaderPayloadProcessor Returns a `PayloadProcessorProvider.ReaderPayloadProcessor` for a given `Term` which allows processing the payloads of different terms differently.
PositionBasedTermVectorMapper.TVPositionInfo Container for a term at a position
SegmentInfo Information about a segment such as it's name, directory, and files related to the segment.
SegmentInfos A collection of segmentInfo objects with methods for operating on those segments in relation to the file system.
SegmentReader IndexReader implementation over a single segment.
SegmentReader.CoreClosedListener Called when the shared core for this SegmentReader is closed.
SnapshotDeletionPolicy An `IndexDeletionPolicy` that wraps around any other `IndexDeletionPolicy` and adds the ability to hold and later release snapshots of an index.
StaleReaderException This exception is thrown when an `IndexReader` tries to make changes to the index (via `IndexReader.deleteDocument(int)`, `IndexReader.undeleteAll()` or `IndexReader.setNorm(int, java.lang.String, byte)`) but changes have already been committed to the index since this reader was instantiated.
Term A Term represents a word from text.
TermDocs TermDocs provides an interface for enumerating <document, frequency> pairs for a term.
TermEnum Abstract class for enumerating terms.
TermFreqVector Provides access to stored term vector of a document field.
TermPositions TermPositions provides an interface for enumerating the <document, frequency, <position>* > tuples for a term.
TermVectorEntry Convenience class for holding TermVector information.
TermVectorMapper The TermVectorMapper can be used to map Term Vectors into your own structure instead of the parallel array structure used by `IndexReader.getTermFreqVector(int,String)`.
TermVectorOffsetInfo The TermVectorOffsetInfo class holds information pertaining to a Term in a `TermPositionVector`'s offset information.
TieredMergePolicy Merges segments of approximately equal size, subject to an allowed number of segments per tier.
TieredMergePolicy.MergeScore Holds score and explanation for a single candidate merge.

Classes in org.apache.lucene.index used by org.apache.lucene.index.pruning
FieldInfos Collection of `FieldInfo`s (accessible by number or by name).
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.
TermEnum Abstract class for enumerating terms.
TermFreqVector Provides access to stored term vector of a document field.
TermPositions TermPositions provides an interface for enumerating the <document, frequency, <position>* > tuples for a term.

Classes in org.apache.lucene.index used by org.apache.lucene.misc
FieldInvertState This class tracks the number and position / offset parameters of terms being added to the index.
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.

Classes in org.apache.lucene.index used by org.apache.lucene.queryParser
Term A Term represents a word from text.

Classes in org.apache.lucene.index used by org.apache.lucene.queryParser.complexPhrase
Term A Term represents a word from text.

Classes in org.apache.lucene.index used by org.apache.lucene.queryParser.surround.query
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.
TermEnum Abstract class for enumerating terms.

Classes in org.apache.lucene.index used by org.apache.lucene.search
CorruptIndexException This exception is thrown when Lucene detects an inconsistency in the index.
FieldInvertState This class tracks the number and position / offset parameters of terms being added to the index.
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
IndexWriter An `IndexWriter` creates and maintains an index.
Term A Term represents a word from text.
TermEnum Abstract class for enumerating terms.
TermFreqVector Provides access to stored term vector of a document field.

Classes in org.apache.lucene.index used by org.apache.lucene.search.function
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.

Classes in org.apache.lucene.index used by org.apache.lucene.search.grouping
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.

Classes in org.apache.lucene.index used by org.apache.lucene.search.highlight
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
TermPositionVector Extends `TermFreqVector` to provide additional information about positions in which each of the terms is found.

Classes in org.apache.lucene.index used by org.apache.lucene.search.join
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.

Classes in org.apache.lucene.index used by org.apache.lucene.search.payloads
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.
TermPositions TermPositions provides an interface for enumerating the <document, frequency, <position>* > tuples for a term.

Classes in org.apache.lucene.index used by org.apache.lucene.search.regex
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.
TermEnum Abstract class for enumerating terms.

Classes in org.apache.lucene.index used by org.apache.lucene.search.similar
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.

Classes in org.apache.lucene.index used by org.apache.lucene.search.spans
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.
TermPositions TermPositions provides an interface for enumerating the <document, frequency, <position>* > tuples for a term.

Classes in org.apache.lucene.index used by org.apache.lucene.search.spell
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
IndexWriterConfig Holds all the configuration of `IndexWriter`.

Classes in org.apache.lucene.index used by org.apache.lucene.search.vectorhighlight
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.

Classes in org.apache.lucene.index used by org.apache.lucene.spatial.geohash
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.

Classes in org.apache.lucene.index used by org.apache.lucene.spatial.tier
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.

Classes in org.apache.lucene.index used by org.apache.lucene.store
MergeScheduler Expert: `IndexWriter` uses an instance implementing this interface to execute the merges selected by a `MergePolicy`.

Classes in org.apache.lucene.index used by org.apache.lucene.store.instantiated
CorruptIndexException This exception is thrown when Lucene detects an inconsistency in the index.
FieldInfos Collection of `FieldInfo`s (accessible by number or by name).
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
Term A Term represents a word from text.
TermDocs TermDocs provides an interface for enumerating <document, frequency> pairs for a term.
TermEnum Abstract class for enumerating terms.
TermFreqVector Provides access to stored term vector of a document field.
TermPositions TermPositions provides an interface for enumerating the <document, frequency, <position>* > tuples for a term.
TermPositionVector Extends `TermFreqVector` to provide additional information about positions in which each of the terms is found.
TermVectorMapper The TermVectorMapper can be used to map Term Vectors into your own structure instead of the parallel array structure used by `IndexReader.getTermFreqVector(int,String)`.
TermVectorOffsetInfo The TermVectorOffsetInfo class holds information pertaining to a Term in a `TermPositionVector`'s offset information.

Classes in org.apache.lucene.index used by org.apache.lucene.util
CheckIndex.Status Returned from `CheckIndex.checkIndex()` detailing the health and status of the index.
FieldInfos Collection of `FieldInfo`s (accessible by number or by name).
IndexReader IndexReader is an abstract class, providing an interface for accessing an index.
IndexWriter An `IndexWriter` creates and maintains an index.
IndexWriterConfig Holds all the configuration of `IndexWriter`.
LogMergePolicy This class implements a `MergePolicy` that tries to merge segments into levels of exponentially increasing size, where each level has fewer segments than the value of the merge factor.
MergePolicy Expert: a MergePolicy determines the sequence of primitive merge operations.
MergeScheduler Expert: `IndexWriter` uses an instance implementing this interface to execute the merges selected by a `MergePolicy`.
TieredMergePolicy Merges segments of approximately equal size, subject to an allowed number of segments per tier.