ArrayUtil |
Methods for manipulating arrays. |
AttributeImpl |
Base class for Attributes that can be added to a
AttributeSource . |
AttributeSource |
An AttributeSource contains a list of different AttributeImpl s,
and methods to add and get them. |
AttributeSource.AttributeFactory |
An AttributeFactory creates instances of AttributeImpl s. |
AttributeSource.State |
This class holds the state of an AttributeSource. |
AverageGuessMemoryModel |
An average, best guess, MemoryModel that should work okay on most systems. |
BitUtil |
A variety of high efficiency bit twiddling routines. |
BitVector |
Optimized implementation of a vector of bits. |
CharacterUtils |
CharacterUtils provides a unified interface to Character-related
operations to implement backwards compatible character operations based on a
Version instance. |
CharacterUtils.CharacterBuffer |
A simple IO buffer to use with
fill(CharacterBuffer, Reader) . |
CloseableThreadLocal<T> |
Java's builtin ThreadLocal has a serious flaw:
it can take an arbitrarily long amount of time to
dereference the things you had stored in it, even once the
ThreadLocal instance itself is no longer referenced. |
CollectionUtil |
Methods for manipulating (sorting) collections. |
Constants |
Some useful constants. |
DocIdBitSet |
Simple DocIdSet and DocIdSetIterator backed by a BitSet |
DoubleBarrelLRUCache<K extends DoubleBarrelLRUCache.CloneableKey, V> |
Simple concurrent LRU cache, using a "double barrel"
approach where two ConcurrentHashMaps record entries. |
DoubleBarrelLRUCache.CloneableKey |
|
DummyConcurrentLock |
A dummy lock as a replacement for ReentrantLock to disable locking |
English |
|
FieldCacheSanityChecker |
Provides methods for sanity checking that entries in the FieldCache
are not wasteful or inconsistent. |
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. |
IndexableBinaryStringTools |
Provides support for converting byte sequences to Strings and back again. |
IOUtils |
|
MapBackedSet<E> |
A Set implementation that wraps an actual Map based
implementation. |
MapOfSets<K, V> |
Helper class for keeping Lists of Objects associated with keys. |
MemoryModel |
Returns primitive memory sizes for estimating RAM usage. |
NamedThreadFactory |
A default ThreadFactory implementation that accepts the name prefix
of the created threads as a constructor argument. |
NumericUtils |
This is a helper class to generate prefix-encoded representations for numerical values
and supplies converters to represent float/double values as sortable integers/longs. |
NumericUtils.IntRangeBuilder |
Expert: Callback for splitIntRange(NumericUtils.IntRangeBuilder, int, int, int) . |
NumericUtils.LongRangeBuilder |
Expert: Callback for splitLongRange(NumericUtils.LongRangeBuilder, int, long, long) . |
OpenBitSet |
An "open" BitSet implementation that allows direct access to the array of words
storing the bits. |
OpenBitSetDISI |
|
OpenBitSetIterator |
An iterator to iterate over set bits in an OpenBitSet. |
Parameter |
This class is deprecated.
Use Java 5 enum, will be removed in a later Lucene 3.x release. |
PriorityQueue<T> |
A PriorityQueue maintains a partial ordering of its elements such that the
least element can always be found in constant time. |
RamUsageEstimator |
Estimates the size of a given Object using a given MemoryModel for primitive
size information. |
ReaderUtil |
Common util methods for dealing with IndexReader s. |
ReaderUtil.Gather |
Recursively visits all sub-readers of a reader. |
ScorerDocQueue |
A ScorerDocQueue maintains a partial ordering of its Scorers such that the
least Scorer can always be found in constant time. |
SetOnce<T> |
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. |
SimpleStringInterner |
Simple lockless and memory barrier free String intern cache that is guaranteed
to return the same String instance as String.intern()
does. |
SmallFloat |
Floating point numbers smaller than 32 bits. |
SortedVIntList |
Stores and iterate on sorted integers in compressed form in RAM. |
SorterTemplate |
This class was inspired by CGLIB, but provides a better
QuickSort algorithm without additional InsertionSort
at the end. |
StringHelper |
Methods for manipulating strings. |
StringInterner |
Subclasses of StringInterner are required to
return the same single String object for all equal strings. |
ToStringUtils |
Helper methods to ease implementing toString() . |
UnicodeUtil |
Class to encode java's UTF16 char[] into UTF8 byte[]
without always allocating a new byte[] as
String.getBytes("UTF-8") does. |
UnicodeUtil.UTF16Result |
|
UnicodeUtil.UTF8Result |
|
VirtualMethod<C> |
A utility for keeping backwards compatibility on previously abstract methods
(or similar replacements). |