Uses of Package
org.apache.lucene.util

Packages that use org.apache.lucene.util

org.apache.lucene.analysis	API and code to convert text into indexable/searchable tokens.
org.apache.lucene.analysis.tokenattributes	General-purpose attributes for text analysis.
org.apache.lucene.codecs	Codecs API: API for customization of the encoding and structure of the index.
org.apache.lucene.codecs.compressing	StoredFieldsFormat that allows cross-document and cross-field compression of stored fields.
org.apache.lucene.codecs.lucene3x	Codec to support Lucene 3.x indexes (readonly)
org.apache.lucene.codecs.lucene40	Lucene 4.0 file format.
org.apache.lucene.codecs.lucene41	Lucene 4.1 file format.
org.apache.lucene.codecs.lucene42	Lucene 4.2 file format.
org.apache.lucene.codecs.perfield	Postings format that can delegate to different formats per-field.
org.apache.lucene.document	The logical representation of a Document for indexing and searching.
org.apache.lucene.index	Code to maintain and access indices.
org.apache.lucene.search	Code to search indices.
org.apache.lucene.search.payloads	The payloads package provides Query mechanisms for finding and using payloads.
org.apache.lucene.search.similarities	This package contains the various ranking models that can be used in Lucene.
org.apache.lucene.search.spans	The calculus of spans.
org.apache.lucene.util	Some utility classes.
org.apache.lucene.util.automaton	Finite-state automaton for regular expressions.
org.apache.lucene.util.fst	Finite state transducers
org.apache.lucene.util.mutable	Comparable object wrappers
org.apache.lucene.util.packed	Packed integer arrays and streams.

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

Attribute
Base interface for attributes.

AttributeImpl
Base class for Attributes that can be added to a AttributeSource.

AttributeReflector
This interface is used to reflect contents of AttributeSource or AttributeImpl.

AttributeSource
An AttributeSource contains a list of different AttributeImpls, and methods to add and get them.

AttributeSource.AttributeFactory
An AttributeFactory creates instances of AttributeImpls.

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

Classes in org.apache.lucene.util used by org.apache.lucene.analysis.tokenattributes

Attribute
Base interface for attributes.

AttributeImpl
Base class for Attributes that can be added to a AttributeSource.

AttributeReflector
This interface is used to reflect contents of AttributeSource or AttributeImpl.

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

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

Bits
Interface for Bitset-like structures.

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

FixedBitSet
BitSet of fixed length (numBits), backed by accessible (FixedBitSet.getBits()) long[], accessed with an int index, implementing Bits and DocIdSet.

MutableBits
Extension of Bits for live documents.

NamedSPILoader.NamedSPI
Interface to support NamedSPILoader.lookup(String) by name.

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

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

Classes in org.apache.lucene.util used by org.apache.lucene.codecs.lucene3x

NamedSPILoader.NamedSPI
Interface to support NamedSPILoader.lookup(String) by name.

Classes in org.apache.lucene.util used by org.apache.lucene.codecs.lucene40

Bits
Interface for Bitset-like structures.

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

MutableBits
Extension of Bits for live documents.

NamedSPILoader.NamedSPI
Interface to support NamedSPILoader.lookup(String) by name.

Classes in org.apache.lucene.util used by org.apache.lucene.codecs.lucene41

Bits
Interface for Bitset-like structures.

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

NamedSPILoader.NamedSPI
Interface to support NamedSPILoader.lookup(String) by name.

Classes in org.apache.lucene.util used by org.apache.lucene.codecs.lucene42

NamedSPILoader.NamedSPI
Interface to support NamedSPILoader.lookup(String) by name.

Classes in org.apache.lucene.util used by org.apache.lucene.codecs.perfield

NamedSPILoader.NamedSPI
Interface to support NamedSPILoader.lookup(String) by name.

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

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

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

AttributeSource
An AttributeSource contains a list of different AttributeImpls, and methods to add and get them.

Bits
Interface for Bitset-like structures.

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

BytesRefIterator
A simple iterator interface for BytesRef iteration.

InfoStream
Debugging API for Lucene classes such as IndexWriter and SegmentInfos.

MutableBits
Extension of Bits for live documents.

SetOnce
A convenient class which offers a semi-immutable object wrapper implementation which allows one to set the value of an object exactly once, and retrieve it many times.

Version
Use by certain classes to match version compatibility across releases of Lucene.

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

Attribute
Base interface for attributes.

AttributeImpl
Base class for Attributes that can be added to a AttributeSource.

AttributeSource
An AttributeSource contains a list of different AttributeImpls, and methods to add and get them.

Bits
Interface for Bitset-like structures.

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

BytesRefIterator
A simple iterator interface for BytesRef iteration.

Counter
Simple counter class

PriorityQueue
A PriorityQueue maintains a partial ordering of its elements such that the least element can always be found in constant time.

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

Bits
Interface for Bitset-like structures.

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

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

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

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

Bits
Interface for Bitset-like structures.

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

Attribute
Base interface for attributes.

AttributeImpl
Base class for Attributes that can be added to a AttributeSource.

AttributeReflector
This interface is used to reflect contents of AttributeSource or AttributeImpl.

AttributeSource
An AttributeSource contains a list of different AttributeImpls, and methods to add and get them.

AttributeSource.AttributeFactory
An AttributeFactory creates instances of AttributeImpls.

AttributeSource.State
This class holds the state of an AttributeSource.

Bits
Interface for Bitset-like structures.

ByteBlockPool
Class that Posting and PostingVector use to write byte streams into shared fixed-size byte[] arrays.

ByteBlockPool.Allocator
Abstract class for allocating and freeing byte blocks.

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

BytesRefHash.BytesStartArray
Manages allocation of the per-term addresses.

BytesRefIterator
A simple iterator interface for BytesRef iteration.

CharsRef
Represents char[], as a slice (offset + length) into an existing char[].

Counter
Simple counter class

DoubleBarrelLRUCache.CloneableKey
Object providing clone(); the key class must subclass this.

FieldCacheSanityChecker.Insanity
Simple container for a collection of related CacheEntry objects that in conjunction with each other represent some "insane" usage of the FieldCache.

FieldCacheSanityChecker.InsanityType
An Enumeration of the different types of "insane" behavior that may be detected in a FieldCache.

FixedBitSet
BitSet of fixed length (numBits), backed by accessible (FixedBitSet.getBits()) long[], accessed with an int index, implementing Bits and DocIdSet.

InfoStream
Debugging API for Lucene classes such as IndexWriter and SegmentInfos.

IntBlockPool
A pool for int blocks similar to ByteBlockPool

IntBlockPool.Allocator
Abstract class for allocating and freeing int blocks.

IntsRef
Represents int[], as a slice (offset + length) into an existing int[].

LongsRef
Represents long[], as a slice (offset + length) into an existing long[].

NamedSPILoader.NamedSPI
Interface to support NamedSPILoader.lookup(String) by name.

NumericUtils.IntRangeBuilder
Callback for NumericUtils.splitIntRange(org.apache.lucene.util.NumericUtils.IntRangeBuilder, int, int, int).

NumericUtils.LongRangeBuilder
Callback for NumericUtils.splitLongRange(org.apache.lucene.util.NumericUtils.LongRangeBuilder, int, long, long).

OpenBitSet
An "open" BitSet implementation that allows direct access to the array of words storing the bits.

PagedBytes.PagedBytesDataInput

PagedBytes.PagedBytesDataOutput

PagedBytes.Reader
Provides methods to read BytesRefs from a frozen PagedBytes.

RamUsageEstimator.JvmFeature
JVM diagnostic features.

RollingBuffer.Resettable
Implement to reset an instance

SPIClassIterator
Helper class for loading SPI classes from classpath (META-INF files).

Version
Use by certain classes to match version compatibility across releases of Lucene.

VirtualMethod
A utility for keeping backwards compatibility on previously abstract methods (or similar replacements).

WeakIdentityMap
Implements a combination of WeakHashMap and IdentityHashMap.

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

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

IntsRef
Represents int[], as a slice (offset + length) into an existing int[].

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

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

CharsRef
Represents char[], as a slice (offset + length) into an existing char[].

IntsRef
Represents int[], as a slice (offset + length) into an existing int[].

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

BytesRef
Represents byte[], as a slice (offset + length) into an existing byte[].

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

LongsRef
Represents long[], as a slice (offset + length) into an existing long[].