Package org.apache.lucene.util

Some utility classes.

See:
Description

Class Summary

ArrayUtil	Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
BitUtil	A variety of high efficiencly bit twiddling routines.
BitVector	Optimized implementation of a vector of bits.
CloseableThreadLocal	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.
Constants	Some useful constants.
DocIdBitSet	Simple DocIdSet and DocIdSetIterator backed by a BitSet
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	A serializable Enum class.
PriorityQueue	A PriorityQueue maintains a partial ordering of its elements such that the least element can always be found in constant time.
ScorerDocQueue	A ScorerDocQueue maintains a partial ordering of its Scorers such that the least Scorer can always be found in constant time.
SmallFloat	Floating point numbers smaller than 32 bits.
SortedVIntList	Store and iterate sorted integers in compressed form in RAM.
StringHelper	Methods for manipulating strings.
ToStringUtils	Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
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

Package org.apache.lucene.util Description

Some utility classes.