Uses of Package
org.apache.lucene.search

Packages that use org.apache.lucene.search

Package	Description
org.apache.lucene.analysis.boost	Provides various convenience classes for creating boosts on Tokens.
org.apache.lucene.classification	Uses already seen data (the indexed documents) to classify an input ( can be simple text or a structured document).
org.apache.lucene.classification.document	Uses already seen data (the indexed documents) to classify new documents.
org.apache.lucene.classification.utils	Utilities for evaluation, data preparation, etc.
org.apache.lucene.codecs.compressing	StoredFieldsFormat that allows cross-document and cross-field compression of stored fields.
org.apache.lucene.codecs.idversion	A primary-key postings format that associates a version (long) with each term and can provide fail-fast lookups by ID and version.
org.apache.lucene.codecs.lucene50	Components from the Lucene 5.0 index format See org.apache.lucene.codecs.lucene80 for an overview of the index format.
org.apache.lucene.codecs.lucene70	Components from the Lucene 7.0 index format.
org.apache.lucene.codecs.lucene80	Components from the Lucene 8.0 index format See org.apache.lucene.codecs.lucene84 for an overview of the index format.
org.apache.lucene.codecs.lucene84	Components from the Lucene 8.4 index format.
org.apache.lucene.codecs.memory	Term dictionary, DocValues or Postings formats that are read entirely into memory.
org.apache.lucene.codecs.simpletext	Simpletext Codec: writes human readable postings.
org.apache.lucene.codecs.uniformsplit.sharedterms	Pluggable term index / block terms dictionary implementations.
org.apache.lucene.document	The logical representation of a Document for indexing and searching.
org.apache.lucene.expressions	Expressions.
org.apache.lucene.index	Code to maintain and access indices.
org.apache.lucene.index.memory	High-performance single-document main memory Apache Lucene fulltext search index.
org.apache.lucene.monitor	Monitoring framework
org.apache.lucene.payloads	Experimental classes for interacting with payloads
org.apache.lucene.queries	Filters and Queries that add to core Lucene.
org.apache.lucene.queries.function	Queries that compute score based upon a function.
org.apache.lucene.queries.function.docvalues	FunctionValues for different data types.
org.apache.lucene.queries.function.valuesource	A variety of functions to use with FunctionQuery.
org.apache.lucene.queries.intervals	Intervals queries
org.apache.lucene.queries.mlt	Document similarity query generators.
org.apache.lucene.queries.payloads	The payloads package provides Query mechanisms for finding and using payloads.
org.apache.lucene.queryparser.classic	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.ext	Extendable QueryParser provides a simple and flexible extension mechanism by overloading query field names.
org.apache.lucene.queryparser.flexible.standard	Implementation of the Lucene classic query parser using the flexible query parser frameworks
org.apache.lucene.queryparser.flexible.standard.builders	Standard Lucene Query Node Builders.
org.apache.lucene.queryparser.flexible.standard.config	Standard Lucene Query Configuration.
org.apache.lucene.queryparser.simple	A simple query parser for human-entered queries.
org.apache.lucene.queryparser.surround.query	This package contains SrndQuery and its subclasses.
org.apache.lucene.queryparser.xml	Parser that produces Lucene Query objects from XML streams.
org.apache.lucene.queryparser.xml.builders	XML Parser factories for different Lucene Query/Filters.
org.apache.lucene.sandbox.queries	Additional queries (some may have caveats or limitations)
org.apache.lucene.search	Code to search indices.
org.apache.lucene.search.comparators	Comparators, used to compare hits so as to determine their sort order when collecting the top results with TopFieldCollector.
org.apache.lucene.search.grouping	Grouping.
org.apache.lucene.search.highlight	Highlighting search terms.
org.apache.lucene.search.join	Support for index-time and query-time joins.
org.apache.lucene.search.similarities	This package contains the various ranking models that can be used in Lucene.
org.apache.lucene.search.similarity	Misc similarity implementations.
org.apache.lucene.search.spans	The calculus of spans.
org.apache.lucene.search.spell	Suggest alternate spellings for words.
org.apache.lucene.search.suggest	Support for Autocomplete/Autosuggest
org.apache.lucene.search.suggest.analyzing	Analyzer based autosuggest.
org.apache.lucene.search.suggest.document	Support for document suggestion
org.apache.lucene.search.uhighlight	The UnifiedHighlighter -- a flexible highlighter that can get offsets from postings, term vectors, or analysis.
org.apache.lucene.search.vectorhighlight	Another highlighter implementation based on term vectors.
org.apache.lucene.util	Some utility classes.
org.apache.lucene.util.automaton	Finite-state automaton for regular expressions.
org.apache.lucene.util.bkd	Block KD-tree, implementing the generic spatial data structure described in this paper.

Classes in org.apache.lucene.search used by org.apache.lucene.analysis.boost

Class	Description
BoostAttribute	Add this Attribute to a TermsEnum returned by MultiTermQuery.getTermsEnum(Terms,AttributeSource) and update the boost on each returned term.

Classes in org.apache.lucene.search used by org.apache.lucene.classification

Class	Description
IndexSearcher	Implements search over a single IndexReader.
Query	The abstract base class for queries.
TopDocs	Represents hits returned by IndexSearcher.search(Query,int).

Classes in org.apache.lucene.search used by org.apache.lucene.classification.document

Class	Description
Query	The abstract base class for queries.
TopDocs	Represents hits returned by IndexSearcher.search(Query,int).

Classes in org.apache.lucene.search used by org.apache.lucene.classification.utils

Class	Description
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree
ScoreDoc	Holds one hit in TopDocs.

Classes in org.apache.lucene.search used by org.apache.lucene.codecs.compressing

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.

Classes in org.apache.lucene.search used by org.apache.lucene.codecs.idversion

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.

Classes in org.apache.lucene.search used by org.apache.lucene.codecs.lucene50

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.

Classes in org.apache.lucene.search used by org.apache.lucene.codecs.lucene70

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.

Classes in org.apache.lucene.search used by org.apache.lucene.codecs.lucene80

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.

Classes in org.apache.lucene.search used by org.apache.lucene.codecs.lucene84

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.

Classes in org.apache.lucene.search used by org.apache.lucene.codecs.memory

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.

Classes in org.apache.lucene.search used by org.apache.lucene.codecs.simpletext

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.

Classes in org.apache.lucene.search used by org.apache.lucene.codecs.uniformsplit.sharedterms

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.

Classes in org.apache.lucene.search used by org.apache.lucene.document

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
DoubleValues	Per-segment, per-document double values, which can be calculated at search-time
DoubleValuesSource	Base class for producing DoubleValues To obtain a DoubleValues object for a leaf reader, clients should call DoubleValuesSource.rewrite(IndexSearcher) against the top-level searcher, and then call DoubleValuesSource.getValues(LeafReaderContext, DoubleValues) on the resulting DoubleValuesSource.
Explanation	Expert: Describes the score computation for document and query.
FieldComparator	Expert: a FieldComparator compares hits so as to determine their sort order when collecting the top results with TopFieldCollector.
IndexSearcher	Implements search over a single IndexReader.
LeafFieldComparator	Expert: comparator that gets instantiated on each leaf from a top-level FieldComparator instance.
MultiRangeQuery	Abstract class for range queries involving multiple ranges against physical points such as IntPoints All ranges are logically ORed together TODO: Add capability for handling overlapping ranges at rewrite time
MultiRangeQuery.Builder	A builder for multirange queries.
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree
Scorable	Allows access to the score of a Query
ScoreMode	Different modes of search.
Scorer	Expert: Common scoring functionality for different types of queries.
ScorerSupplier	A supplier of Scorer.
SegmentCacheable	Interface defining whether or not an object can be cached against a LeafReader Objects that depend only on segment-immutable structures such as Points or postings lists can just return true from SegmentCacheable.isCacheable(LeafReaderContext) Objects that depend on doc values should return DocValues.isCacheable(LeafReaderContext, String...), which will check to see if the doc values fields have been updated.
SimpleFieldComparator	Base FieldComparator implementation that is used for all contexts.
SortField	Stores information about how to sort documents by terms in an individual field.
TopFieldDocs	Represents hits returned by IndexSearcher.search(Query,int,Sort).
TwoPhaseIterator	Returned by Scorer.twoPhaseIterator() to expose an approximation of a DocIdSetIterator.
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.expressions

Class	Description
DoubleValues	Per-segment, per-document double values, which can be calculated at search-time
DoubleValuesSource	Base class for producing DoubleValues To obtain a DoubleValues object for a leaf reader, clients should call DoubleValuesSource.rewrite(IndexSearcher) against the top-level searcher, and then call DoubleValuesSource.getValues(LeafReaderContext, DoubleValues) on the resulting DoubleValuesSource.
Explanation	Expert: Describes the score computation for document and query.
IndexSearcher	Implements search over a single IndexReader.
Rescorer	Re-scores the topN results (TopDocs) from an original query.
SegmentCacheable	Interface defining whether or not an object can be cached against a LeafReader Objects that depend only on segment-immutable structures such as Points or postings lists can just return true from SegmentCacheable.isCacheable(LeafReaderContext) Objects that depend on doc values should return DocValues.isCacheable(LeafReaderContext, String...), which will check to see if the doc values fields have been updated.
SortField	Stores information about how to sort documents by terms in an individual field.
SortRescorer	A Rescorer that re-sorts according to a provided Sort.

Classes in org.apache.lucene.search used by org.apache.lucene.index

Class	Description
DocIdSet	A DocIdSet contains a set of doc ids.
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
Query	The abstract base class for queries.
ReferenceManager	Utility class to safely share instances of a certain type across multiple threads, while periodically refreshing them.
Scorer	Expert: Common scoring functionality for different types of queries.
Sort	Encapsulates sort criteria for returned hits.
SortField	Stores information about how to sort documents by terms in an individual field.
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.index.memory

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
IndexSearcher	Implements search over a single IndexReader.
Query	The abstract base class for queries.

Classes in org.apache.lucene.search used by org.apache.lucene.monitor

Class	Description
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
BooleanQuery	A Query that matches documents matching boolean combinations of other queries, e.g.
BooleanQuery.Builder	A builder for boolean queries.
BoostQuery	A Query wrapper that allows to give a boost to the wrapped query.
Collector	Expert: Collectors are primarily meant to be used to gather raw results from a search, and implement sorting or custom result filtering, collation, etc.
Explanation	Expert: Describes the score computation for document and query.
IndexSearcher	Implements search over a single IndexReader.
LeafCollector	Collector decouples the score from the collected doc: the score computation is skipped entirely if it's not needed.
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree
Scorable	Allows access to the score of a Query
ScoreMode	Different modes of search.
SearcherFactory	Factory class used by SearcherManager to create new IndexSearchers.
SearcherManager	Utility class to safely share IndexSearcher instances across multiple threads, while periodically reopening.
SimpleCollector	Base Collector implementation that is used to collect all contexts.
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.payloads

Class	Description
Query	The abstract base class for queries.

Classes in org.apache.lucene.search used by org.apache.lucene.queries

Class	Description
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree

Classes in org.apache.lucene.search used by org.apache.lucene.queries.function

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
DoubleValues	Per-segment, per-document double values, which can be calculated at search-time
DoubleValuesSource	Base class for producing DoubleValues To obtain a DoubleValues object for a leaf reader, clients should call DoubleValuesSource.rewrite(IndexSearcher) against the top-level searcher, and then call DoubleValuesSource.getValues(LeafReaderContext, DoubleValues) on the resulting DoubleValuesSource.
Explanation	Expert: Describes the score computation for document and query.
FieldComparator	Expert: a FieldComparator compares hits so as to determine their sort order when collecting the top results with TopFieldCollector.
FieldComparatorSource	Provides a FieldComparator for custom field sorting.
IndexSearcher	Implements search over a single IndexReader.
LeafFieldComparator	Expert: comparator that gets instantiated on each leaf from a top-level FieldComparator instance.
LongValues	Per-segment, per-document long values, which can be calculated at search-time
LongValuesSource	Base class for producing LongValues To obtain a LongValues object for a leaf reader, clients should call LongValuesSource.rewrite(IndexSearcher) against the top-level searcher, and then LongValuesSource.getValues(LeafReaderContext, DoubleValues).
Matches	Reports the positions and optionally offsets of all matching terms in a query for a single document To obtain a MatchesIterator for a particular field, call Matches.getMatches(String).
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree
Scorable	Allows access to the score of a Query
ScoreMode	Different modes of search.
Scorer	Expert: Common scoring functionality for different types of queries.
SegmentCacheable	Interface defining whether or not an object can be cached against a LeafReader Objects that depend only on segment-immutable structures such as Points or postings lists can just return true from SegmentCacheable.isCacheable(LeafReaderContext) Objects that depend on doc values should return DocValues.isCacheable(LeafReaderContext, String...), which will check to see if the doc values fields have been updated.
SimpleFieldComparator	Base FieldComparator implementation that is used for all contexts.
SortField	Stores information about how to sort documents by terms in an individual field.
TwoPhaseIterator	Returned by Scorer.twoPhaseIterator() to expose an approximation of a DocIdSetIterator.
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.queries.function.docvalues

Class	Description
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.queries.function.valuesource

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
IndexSearcher	Implements search over a single IndexReader.
Query	The abstract base class for queries.
Scorer	Expert: Common scoring functionality for different types of queries.
SortedNumericSelector.Type	Type of selection to perform.
SortedSetSelector.Type	Type of selection to perform.
SortField	Stores information about how to sort documents by terms in an individual field.
TwoPhaseIterator	Returned by Scorer.twoPhaseIterator() to expose an approximation of a DocIdSetIterator.
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.queries.intervals

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
Explanation	Expert: Describes the score computation for document and query.
FilterMatchesIterator	A MatchesIterator that delegates all calls to another MatchesIterator
IndexSearcher	Implements search over a single IndexReader.
Matches	Reports the positions and optionally offsets of all matching terms in a query for a single document To obtain a MatchesIterator for a particular field, call Matches.getMatches(String).
MatchesIterator	An iterator over match positions (and optionally offsets) for a single document and field To iterate over the matches, call MatchesIterator.next() until it returns false, retrieving positions and/or offsets after each call.
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree
Scorable	Allows access to the score of a Query
ScoreMode	Different modes of search.
Scorer	Expert: Common scoring functionality for different types of queries.
SegmentCacheable	Interface defining whether or not an object can be cached against a LeafReader Objects that depend only on segment-immutable structures such as Points or postings lists can just return true from SegmentCacheable.isCacheable(LeafReaderContext) Objects that depend on doc values should return DocValues.isCacheable(LeafReaderContext, String...), which will check to see if the doc values fields have been updated.
TwoPhaseIterator	Returned by Scorer.twoPhaseIterator() to expose an approximation of a DocIdSetIterator.
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.queries.mlt

Class	Description
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree

Classes in org.apache.lucene.search used by org.apache.lucene.queries.payloads

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
Explanation	Expert: Describes the score computation for document and query.
IndexSearcher	Implements search over a single IndexReader.
LeafSimScorer	Similarity.SimScorer on a specific LeafReader.
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree
Scorable	Allows access to the score of a Query
ScoreMode	Different modes of search.
Scorer	Expert: Common scoring functionality for different types of queries.
SegmentCacheable	Interface defining whether or not an object can be cached against a LeafReader Objects that depend only on segment-immutable structures such as Points or postings lists can just return true from SegmentCacheable.isCacheable(LeafReaderContext) Objects that depend on doc values should return DocValues.isCacheable(LeafReaderContext, String...), which will check to see if the doc values fields have been updated.
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.queryparser.classic

Class	Description
BooleanClause	A clause in a BooleanQuery.
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
MultiTermQuery.RewriteMethod	Abstract class that defines how the query is rewritten.
PhraseQuery	A Query that matches documents containing a particular sequence of terms.
Query	The abstract base class for queries.

Classes in org.apache.lucene.search used by org.apache.lucene.queryparser.complexPhrase

Class	Description
BooleanQuery	A Query that matches documents matching boolean combinations of other queries, e.g.
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree
SynonymQuery	A query that treats multiple terms as synonyms.

Classes in org.apache.lucene.search used by org.apache.lucene.queryparser.ext

Class	Description
Query	The abstract base class for queries.

Classes in org.apache.lucene.search used by org.apache.lucene.queryparser.flexible.standard

Class	Description
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
MultiTermQuery.RewriteMethod	Abstract class that defines how the query is rewritten.
Query	The abstract base class for queries.

Classes in org.apache.lucene.search used by org.apache.lucene.queryparser.flexible.standard.builders

Class	Description
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
BooleanQuery	A Query that matches documents matching boolean combinations of other queries, e.g.
FuzzyQuery	Implements the fuzzy search query.
MatchAllDocsQuery	A query that matches all documents.
MatchNoDocsQuery	A query that matches no documents.
MultiPhraseQuery	A generalized version of PhraseQuery, with the possibility of adding more than one term at the same position that are treated as a disjunction (OR).
PrefixQuery	A Query that matches documents containing terms with a specified prefix.
Query	The abstract base class for queries.
RegexpQuery	A fast regular expression query based on the org.apache.lucene.util.automaton package.
TermQuery	A Query that matches documents containing a term.
TermRangeQuery	A Query that matches documents within an range of terms.
WildcardQuery	Implements the wildcard search query.

Classes in org.apache.lucene.search used by org.apache.lucene.queryparser.flexible.standard.config

Class	Description
MultiTermQuery.RewriteMethod	Abstract class that defines how the query is rewritten.

Classes in org.apache.lucene.search used by org.apache.lucene.queryparser.simple

Class	Description
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
BooleanQuery	A Query that matches documents matching boolean combinations of other queries, e.g.
Query	The abstract base class for queries.

Classes in org.apache.lucene.search used by org.apache.lucene.queryparser.surround.query

Class	Description
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
BooleanQuery.Builder	A builder for boolean queries.
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree
TermQuery	A Query that matches documents containing a term.

Classes in org.apache.lucene.search used by org.apache.lucene.queryparser.xml

Class	Description
Query	The abstract base class for queries.

Classes in org.apache.lucene.search used by org.apache.lucene.queryparser.xml.builders

Class	Description
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
Query	The abstract base class for queries.

Classes in org.apache.lucene.search used by org.apache.lucene.sandbox.queries

Class	Description
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree

Classes in org.apache.lucene.search used by org.apache.lucene.search

Class	Description
AutomatonQuery	A Query that will match terms against a finite-state machine.
BlendedTermQuery	A Query that blends index statistics across multiple terms.
BlendedTermQuery.Builder	A Builder for BlendedTermQuery.
BlendedTermQuery.RewriteMethod	A BlendedTermQuery.RewriteMethod defines how queries for individual terms should be merged.
BlockMaxDISI	DocIdSetIterator that skips non-competitive docs by checking the max score of the provided Scorer for the current block.
BM25FQuery	A Query that treats multiple fields as a single stream and scores terms as if you had indexed them as a single term in a single field.
BM25FQuery.Builder	A builder for BM25FQuery.
BM25FQuery.FieldAndWeight
BooleanClause	A clause in a BooleanQuery.
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
BooleanQuery	A Query that matches documents matching boolean combinations of other queries, e.g.
BooleanQuery.Builder	A builder for boolean queries.
BooleanScorer.Bucket
BooleanScorer.BulkScorerAndDoc
BooleanScorer.HeadPriorityQueue
BooleanScorer.OrCollector
BooleanScorer.TailPriorityQueue
BooleanWeight	Expert: the Weight for BooleanQuery, used to normalize, score and explain these queries.
BooleanWeight.WeightedBooleanClause
BoostAttribute	Add this Attribute to a TermsEnum returned by MultiTermQuery.getTermsEnum(Terms,AttributeSource) and update the boost on each returned term.
BoostQuery	A Query wrapper that allows to give a boost to the wrapped query.
BulkScorer	This class is used to score a range of documents at once, and is returned by Weight.bulkScorer(org.apache.lucene.index.LeafReaderContext).
CachingCollector	Caches all docs, and optionally also scores, coming from a search, and is then able to replay them to another collector.
CachingCollector.NoScoreCachingCollector
CachingCollector.NoScoreCachingLeafCollector
CollectionStatistics	Contains statistics for a collection (field).
Collector	Expert: Collectors are primarily meant to be used to gather raw results from a search, and implement sorting or custom result filtering, collation, etc.
CollectorManager	A manager of collectors.
ConstantScoreWeight	A Weight that has a constant score equal to the boost of the wrapped query.
DisiPriorityQueue	A priority queue of DocIdSetIterators that orders by current doc ID.
DisiWrapper	Wrapper used in DisiPriorityQueue.
DisjunctionMaxQuery	A query that generates the union of documents produced by its subqueries, and that scores each document with the maximum score for that document as produced by any subquery, plus a tie breaking increment for any additional matching subqueries.
DisjunctionScoreBlockBoundaryPropagator	A helper to propagate block boundaries for disjunctions.
DisjunctionScorer	Base class for Scorers that score disjunctions.
DisjunctionScorer.TwoPhase
DiversifiedTopDocsCollector.ScoreDocKey	An extension to ScoreDoc that includes a key used for grouping purposes
DiversifiedTopDocsCollector.ScoreDocKeyQueue
DocIdSet	A DocIdSet contains a set of doc ids.
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
DocValuesNumbersQuery	Like DocValuesTermsQuery, but this query only runs on a long NumericDocValuesField or a SortedNumericDocValuesField, matching all documents whose value in the specified field is contained in the provided set of long values.
DocValuesStats	Holds statistics for a DocValues field.
DocValuesStats.NumericDocValuesStats	Holds statistics for a numeric DocValues field.
DocValuesStats.SortedNumericDocValuesStats	Holds statistics for a sorted-numeric DocValues field.
DocValuesTermsQuery	A Query that only accepts documents whose term value in the specified field is contained in the provided set of allowed terms.
DoubleValues	Per-segment, per-document double values, which can be calculated at search-time
DoubleValuesSource	Base class for producing DoubleValues To obtain a DoubleValues object for a leaf reader, clients should call DoubleValuesSource.rewrite(IndexSearcher) against the top-level searcher, and then call DoubleValuesSource.getValues(LeafReaderContext, DoubleValues) on the resulting DoubleValuesSource.
DoubleValuesSource.DoubleValuesHolder
ExactPhraseMatcher.PostingsAndPosition
Explanation	Expert: Describes the score computation for document and query.
FieldComparator	Expert: a FieldComparator compares hits so as to determine their sort order when collecting the top results with TopFieldCollector.
FieldComparatorSource	Provides a FieldComparator for custom field sorting.
FieldDoc	Expert: A ScoreDoc which also contains information about how to sort the referenced document.
FieldValueHitQueue	Expert: A hit queue for sorting by hits by terms in more than one field.
FieldValueHitQueue.Entry	Extension of ScoreDoc to also store the FieldComparator slot.
FilterCollector	Collector delegator.
FilterLeafCollector	LeafCollector delegator.
FilterScorable	Filter a Scorable, intercepting methods and optionally changing their return values The default implementation simply passes all calls to its delegate, with the exception of Scorable.setMinCompetitiveScore(float) which defaults to a no-op.
FilterScorer	A FilterScorer contains another Scorer, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
FuzzyAutomatonBuilder	Builds a set of CompiledAutomaton for fuzzy matching on a given term, with specified maximum edit distance, fixed prefix and whether or not to allow transpositions.
FuzzyTermsEnum.AutomatonAttribute	Used for sharing automata between segments Levenshtein automata are large and expensive to build; we don't want to build them directly on the query because this can blow up caches that use queries as keys; we also don't want to rebuild them for every segment.
HitQueue
HitsThresholdChecker	Used for defining custom algorithms to allow searches to early terminate
ImpactsDISI	DocIdSetIterator that skips non-competitive docs thanks to the indexed impacts.
IndexSearcher	Implements search over a single IndexReader.
IndexSearcher.LeafSlice	A class holding a subset of the IndexSearchers leaf contexts to be executed within a single thread.
IndexSortSortedNumericDocValuesRangeQuery.ValueComparator	Compares the given document's value with a stored reference value.
LeafCollector	Collector decouples the score from the collected doc: the score computation is skipped entirely if it's not needed.
LeafFieldComparator	Expert: comparator that gets instantiated on each leaf from a top-level FieldComparator instance.
LeafSimScorer	Similarity.SimScorer on a specific LeafReader.
LongHashSet
LongValues	Per-segment, per-document long values, which can be calculated at search-time
LongValuesSource	Base class for producing LongValues To obtain a LongValues object for a leaf reader, clients should call LongValuesSource.rewrite(IndexSearcher) against the top-level searcher, and then LongValuesSource.getValues(LeafReaderContext, DoubleValues).
LongValuesSource.LongValuesHolder
LRUQueryCache.LeafCache
Matches	Reports the positions and optionally offsets of all matching terms in a query for a single document To obtain a MatchesIterator for a particular field, call Matches.getMatches(String).
MatchesIterator	An iterator over match positions (and optionally offsets) for a single document and field To iterate over the matches, call MatchesIterator.next() until it returns false, retrieving positions and/or offsets after each call.
MaxNonCompetitiveBoostAttribute	Add this Attribute to a fresh AttributeSource before calling MultiTermQuery.getTermsEnum(Terms,AttributeSource).
MaxScoreAccumulator	Maintains the maximum score and its corresponding document id concurrently
MaxScoreAccumulator.DocAndScore
MaxScoreCache	Compute maximum scores based on Impacts and keep them in a cache in order not to run expensive similarity score computations multiple times on the same data.
MaxScoreSumPropagator	Utility class to propagate scoring information in BooleanQuery, which compute the score as the sum of the scores of its matching clauses.
MultiCollectorManager.Collectors
MultiNormsLeafSimScorer	Copy of LeafSimScorer that sums document's norms from multiple fields.
MultiPhraseQuery	A generalized version of PhraseQuery, with the possibility of adding more than one term at the same position that are treated as a disjunction (OR).
MultiPhraseQuery.Builder	A builder for multi-phrase queries
MultiPhraseQuery.PostingsAndPosition
MultiPhraseQuery.UnionPostingsEnum	Takes the logical union of multiple PostingsEnum iterators.
MultiPhraseQuery.UnionPostingsEnum.DocsQueue	disjunction of postings ordered by docid.
MultiPhraseQuery.UnionPostingsEnum.PositionsQueue	queue of terms for a single document.
MultiRangeQuery	Abstract class for range queries involving multiple ranges against physical points such as IntPoints All ranges are logically ORed together TODO: Add capability for handling overlapping ranges at rewrite time
MultiRangeQuery.Builder	A builder for multirange queries.
MultiRangeQuery.RangeClause	Representation of a single clause in a MultiRangeQuery
MultiTermQuery	An abstract Query that matches documents containing a subset of terms provided by a FilteredTermsEnum enumeration.
MultiTermQuery.RewriteMethod	Abstract class that defines how the query is rewritten.
NamedMatches	Utility class to help extract the set of sub queries that have matched from a larger query.
NearestNeighbor.Cell
NearestNeighbor.NearestHit	Holds one hit from NearestNeighbor.nearest(double, double, java.util.List<org.apache.lucene.util.bkd.BKDReader>, java.util.List<org.apache.lucene.util.Bits>, java.util.List<java.lang.Integer>, int)
NGramPhraseQuery	This is a PhraseQuery which is optimized for n-gram phrase query.
PhraseMatcher	Base class for exact and sloppy phrase matching To find matches on a document, first advance PhraseMatcher.approximation() to the relevant document, then call PhraseMatcher.reset().
PhrasePositions	Position of a term in a document that takes into account the term offset within the phrase.
PhraseQuery	A Query that matches documents containing a particular sequence of terms.
PhraseQuery.Builder	A builder for phrase queries.
PhraseQuery.PostingsAndFreq
PhraseQueue
PhraseWeight
PhraseWildcardQuery	A generalized version of PhraseQuery, built with one or more MultiTermQuery that provides term expansions for multi-terms (one of the expanded terms must match).
PhraseWildcardQuery.Builder	Builds a PhraseWildcardQuery.
PhraseWildcardQuery.MultiTerm	Phrase term with expansions.
PhraseWildcardQuery.PhraseTerm	All PhraseWildcardQuery.PhraseTerm are light and immutable.
PhraseWildcardQuery.SingleTerm	Phrase term with no expansion.
PhraseWildcardQuery.TermBytesTermState	Holds a pair of term bytes - term state.
PhraseWildcardQuery.TermData	Holds the TermState for all the collected Term, for a specific phrase term, for all segments.
PhraseWildcardQuery.TermsData	Holds the TermState and TermStatistics for all the matched and collected Term, for all phrase terms, for all segments.
PhraseWildcardQuery.TermStats	Accumulates the doc freq and total term freq.
PhraseWildcardQuery.TestCounters	Test counters incremented when assertions are enabled.
PointInSetQuery	Abstract query class to find all documents whose single or multi-dimensional point values, previously indexed with e.g.
PointInSetQuery.Stream	Iterator of encoded point values.
PointRangeQuery	Abstract class for range queries against single or multidimensional points such as IntPoint.
Query	The abstract base class for queries.
QueryCache	A cache for queries.
QueryCachingPolicy	A policy defining which filters should be cached.
QueryVisitor	Allows recursion through a query tree
ReferenceManager	Utility class to safely share instances of a certain type across multiple threads, while periodically refreshing them.
ReferenceManager.RefreshListener	Use to receive notification when a refresh has finished.
Rescorer	Re-scores the topN results (TopDocs) from an original query.
Scorable	Allows access to the score of a Query
Scorable.ChildScorable	A child Scorer and its relationship to its parent.
ScoreAndDoc	Used by BulkScorers that need to pass a Scorable to LeafCollector.setScorer(org.apache.lucene.search.Scorable).
ScoreDoc	Holds one hit in TopDocs.
ScoreMode	Different modes of search.
Scorer	Expert: Common scoring functionality for different types of queries.
ScorerSupplier	A supplier of Scorer.
ScoringRewrite	Base rewrite method that translates each term into a query, and keeps the scores as computed by the query.
ScoringRewrite.TermFreqBoostByteStart	Special implementation of BytesStartArray that keeps parallel arrays for boost and docFreq
SearcherFactory	Factory class used by SearcherManager to create new IndexSearchers.
SearcherLifetimeManager.Pruner	See SearcherLifetimeManager.prune(org.apache.lucene.search.SearcherLifetimeManager.Pruner).
SearcherLifetimeManager.SearcherTracker
SegmentCacheable	Interface defining whether or not an object can be cached against a LeafReader Objects that depend only on segment-immutable structures such as Points or postings lists can just return true from SegmentCacheable.isCacheable(LeafReaderContext) Objects that depend on doc values should return DocValues.isCacheable(LeafReaderContext, String...), which will check to see if the doc values fields have been updated.
SimpleCollector	Base Collector implementation that is used to collect all contexts.
Sort	Encapsulates sort criteria for returned hits.
SortedNumericSelector.Type	Type of selection to perform.
SortedSetSelector.Type	Type of selection to perform.
SortField	Stores information about how to sort documents by terms in an individual field.
SortField.Type	Specifies the type of the terms to be sorted, or special types such as CUSTOM
SynonymQuery	A query that treats multiple terms as synonyms.
SynonymQuery.Builder	A builder for SynonymQuery.
SynonymQuery.TermAndBoost
TermAutomatonQuery	A proximity query that lets you express an automaton, whose transitions are terms, to match documents.
TermAutomatonQuery.EnumAndScorer
TermAutomatonQuery.TermAutomatonWeight
TermAutomatonScorer.PosState
TermCollectingRewrite
TermCollectingRewrite.TermCollector
TermInSetQuery	Specialization for a disjunction over many terms that behaves like a ConstantScoreQuery over a BooleanQuery containing only BooleanClause.Occur.SHOULD clauses.
TermRangeQuery	A Query that matches documents within an range of terms.
TermScorer	Expert: A Scorer for documents matching a Term.
TermStatistics	Contains statistics for a specific term
TimeLimitingCollector.TimerThread	Thread used to timeout search requests.
TopDocs	Represents hits returned by IndexSearcher.search(Query,int).
TopDocs.ShardRef
TopDocsCollector	A base class for all collectors that return a TopDocs output.
TopFieldCollector	A Collector that sorts by SortField using FieldComparators.
TopFieldDocs	Represents hits returned by IndexSearcher.search(Query,int,Sort).
TopScoreDocCollector	A Collector implementation that collects the top-scoring hits, returning them as a TopDocs.
TopTermsRewrite	Base rewrite method for collecting only the top terms via a priority queue.
TopTermsRewrite.ScoreTerm
TotalHits	Description of the total number of hits of a query.
TotalHits.Relation	How the TotalHits.value should be interpreted.
TwoPhaseIterator	Returned by Scorer.twoPhaseIterator() to expose an approximation of a DocIdSetIterator.
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.search.comparators

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
FieldComparator	Expert: a FieldComparator compares hits so as to determine their sort order when collecting the top results with TopFieldCollector.
LeafFieldComparator	Expert: comparator that gets instantiated on each leaf from a top-level FieldComparator instance.
Scorable	Allows access to the score of a Query

Classes in org.apache.lucene.search used by org.apache.lucene.search.grouping

Class	Description
Collector	Expert: Collectors are primarily meant to be used to gather raw results from a search, and implement sorting or custom result filtering, collation, etc.
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
DoubleValues	Per-segment, per-document double values, which can be calculated at search-time
DoubleValuesSource	Base class for producing DoubleValues To obtain a DoubleValues object for a leaf reader, clients should call DoubleValuesSource.rewrite(IndexSearcher) against the top-level searcher, and then call DoubleValuesSource.getValues(LeafReaderContext, DoubleValues) on the resulting DoubleValuesSource.
FieldComparator	Expert: a FieldComparator compares hits so as to determine their sort order when collecting the top results with TopFieldCollector.
FilterCollector	Collector delegator.
IndexSearcher	Implements search over a single IndexReader.
LeafCollector	Collector decouples the score from the collected doc: the score computation is skipped entirely if it's not needed.
LeafFieldComparator	Expert: comparator that gets instantiated on each leaf from a top-level FieldComparator instance.
LongValues	Per-segment, per-document long values, which can be calculated at search-time
LongValuesSource	Base class for producing LongValues To obtain a LongValues object for a leaf reader, clients should call LongValuesSource.rewrite(IndexSearcher) against the top-level searcher, and then LongValuesSource.getValues(LeafReaderContext, DoubleValues).
Query	The abstract base class for queries.
Scorable	Allows access to the score of a Query
ScoreDoc	Holds one hit in TopDocs.
ScoreMode	Different modes of search.
SimpleCollector	Base Collector implementation that is used to collect all contexts.
Sort	Encapsulates sort criteria for returned hits.
SortField	Stores information about how to sort documents by terms in an individual field.
TopDocsCollector	A base class for all collectors that return a TopDocs output.
TotalHits	Description of the total number of hits of a query.
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.search.highlight

Class	Description
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
IndexSearcher	Implements search over a single IndexReader.
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree

Classes in org.apache.lucene.search used by org.apache.lucene.search.join

Class	Description
Collector	Expert: Collectors are primarily meant to be used to gather raw results from a search, and implement sorting or custom result filtering, collation, etc.
ConstantScoreWeight	A Weight that has a constant score equal to the boost of the wrapped query.
DocIdSet	A DocIdSet contains a set of doc ids.
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
Explanation	Expert: Describes the score computation for document and query.
FieldComparator	Expert: a FieldComparator compares hits so as to determine their sort order when collecting the top results with TopFieldCollector.
FilterWeight	A FilterWeight contains another Weight and implements all abstract methods by calling the contained weight's method.
IndexSearcher	Implements search over a single IndexReader.
LeafCollector	Collector decouples the score from the collected doc: the score computation is skipped entirely if it's not needed.
Matches	Reports the positions and optionally offsets of all matching terms in a query for a single document To obtain a MatchesIterator for a particular field, call Matches.getMatches(String).
MultiTermQuery	An abstract Query that matches documents containing a subset of terms provided by a FilteredTermsEnum enumeration.
PointInSetQuery.Stream	Iterator of encoded point values.
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree
Scorable	Allows access to the score of a Query
Scorable.ChildScorable	A child Scorer and its relationship to its parent.
ScoreMode	Different modes of search.
Scorer	Expert: Common scoring functionality for different types of queries.
ScorerSupplier	A supplier of Scorer.
SegmentCacheable	Interface defining whether or not an object can be cached against a LeafReader Objects that depend only on segment-immutable structures such as Points or postings lists can just return true from SegmentCacheable.isCacheable(LeafReaderContext) Objects that depend on doc values should return DocValues.isCacheable(LeafReaderContext, String...), which will check to see if the doc values fields have been updated.
SimpleCollector	Base Collector implementation that is used to collect all contexts.
SortField	Stores information about how to sort documents by terms in an individual field.
SortField.Type	Specifies the type of the terms to be sorted, or special types such as CUSTOM
TwoPhaseIterator	Returned by Scorer.twoPhaseIterator() to expose an approximation of a DocIdSetIterator.
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.search.similarities

Class	Description
CollectionStatistics	Contains statistics for a collection (field).
Explanation	Expert: Describes the score computation for document and query.
TermStatistics	Contains statistics for a specific term

Classes in org.apache.lucene.search used by org.apache.lucene.search.similarity

Class	Description
CollectionStatistics	Contains statistics for a collection (field).
TermStatistics	Contains statistics for a specific term

Classes in org.apache.lucene.search used by org.apache.lucene.search.spans

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
Explanation	Expert: Describes the score computation for document and query.
IndexSearcher	Implements search over a single IndexReader.
LeafSimScorer	Similarity.SimScorer on a specific LeafReader.
Matches	Reports the positions and optionally offsets of all matching terms in a query for a single document To obtain a MatchesIterator for a particular field, call Matches.getMatches(String).
MultiTermQuery	An abstract Query that matches documents containing a subset of terms provided by a FilteredTermsEnum enumeration.
MultiTermQuery.RewriteMethod	Abstract class that defines how the query is rewritten.
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree
Scorable	Allows access to the score of a Query
ScoreMode	Different modes of search.
Scorer	Expert: Common scoring functionality for different types of queries.
SegmentCacheable	Interface defining whether or not an object can be cached against a LeafReader Objects that depend only on segment-immutable structures such as Points or postings lists can just return true from SegmentCacheable.isCacheable(LeafReaderContext) Objects that depend on doc values should return DocValues.isCacheable(LeafReaderContext, String...), which will check to see if the doc values fields have been updated.
TopTermsRewrite	Base rewrite method for collecting only the top terms via a priority queue.
TwoPhaseIterator	Returned by Scorer.twoPhaseIterator() to expose an approximation of a DocIdSetIterator.
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.search.spell

Class	Description
BooleanQuery.Builder	A builder for boolean queries.
IndexSearcher	Implements search over a single IndexReader.

Classes in org.apache.lucene.search used by org.apache.lucene.search.suggest

Class	Description
BooleanQuery	A Query that matches documents matching boolean combinations of other queries, e.g.
LongValues	Per-segment, per-document long values, which can be calculated at search-time
LongValuesSource	Base class for producing LongValues To obtain a LongValues object for a leaf reader, clients should call LongValuesSource.rewrite(IndexSearcher) against the top-level searcher, and then LongValuesSource.getValues(LeafReaderContext, DoubleValues).

Classes in org.apache.lucene.search used by org.apache.lucene.search.suggest.analyzing

Class	Description
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
BooleanQuery	A Query that matches documents matching boolean combinations of other queries, e.g.
BooleanQuery.Builder	A builder for boolean queries.
IndexSearcher	Implements search over a single IndexReader.
Query	The abstract base class for queries.
SearcherManager	Utility class to safely share IndexSearcher instances across multiple threads, while periodically reopening.
Sort	Encapsulates sort criteria for returned hits.
TopFieldDocs	Represents hits returned by IndexSearcher.search(Query,int,Sort).

Classes in org.apache.lucene.search used by org.apache.lucene.search.suggest.document

Class	Description
BulkScorer	This class is used to score a range of documents at once, and is returned by Weight.bulkScorer(org.apache.lucene.index.LeafReaderContext).
Collector	Expert: Collectors are primarily meant to be used to gather raw results from a search, and implement sorting or custom result filtering, collation, etc.
Explanation	Expert: Describes the score computation for document and query.
IndexSearcher	Implements search over a single IndexReader.
LeafCollector	Collector decouples the score from the collected doc: the score computation is skipped entirely if it's not needed.
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree
ScoreDoc	Holds one hit in TopDocs.
ScoreMode	Different modes of search.
Scorer	Expert: Common scoring functionality for different types of queries.
SegmentCacheable	Interface defining whether or not an object can be cached against a LeafReader Objects that depend only on segment-immutable structures such as Points or postings lists can just return true from SegmentCacheable.isCacheable(LeafReaderContext) Objects that depend on doc values should return DocValues.isCacheable(LeafReaderContext, String...), which will check to see if the doc values fields have been updated.
SimpleCollector	Base Collector implementation that is used to collect all contexts.
TopDocs	Represents hits returned by IndexSearcher.search(Query,int).
TotalHits	Description of the total number of hits of a query.
Weight	Expert: Calculate query weights and build query scorers.

Classes in org.apache.lucene.search used by org.apache.lucene.search.uhighlight

Class	Description
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
IndexSearcher	Implements search over a single IndexReader.
MatchesIterator	An iterator over match positions (and optionally offsets) for a single document and field To iterate over the matches, call MatchesIterator.next() until it returns false, retrieving positions and/or offsets after each call.
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree
TopDocs	Represents hits returned by IndexSearcher.search(Query,int).

Classes in org.apache.lucene.search used by org.apache.lucene.search.vectorhighlight

Class	Description
PhraseQuery	A Query that matches documents containing a particular sequence of terms.
Query	The abstract base class for queries.

Classes in org.apache.lucene.search used by org.apache.lucene.util

Class	Description
BooleanClause.Occur	Specifies how clauses are to occur in matching documents.
BooleanQuery	A Query that matches documents matching boolean combinations of other queries, e.g.
BooleanQuery.Builder	A builder for boolean queries.
DocIdSet	A DocIdSet contains a set of doc ids.
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.
MultiPhraseQuery.Builder	A builder for multi-phrase queries
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree

Classes in org.apache.lucene.search used by org.apache.lucene.util.automaton

Class	Description
Query	The abstract base class for queries.
QueryVisitor	Allows recursion through a query tree

Classes in org.apache.lucene.search used by org.apache.lucene.util.bkd

Class	Description
DocIdSetIterator	This abstract class defines methods to iterate over a set of non-decreasing doc ids.