Package org.apache.lucene.search

Class FuzzyAutomatonBuilder

java.lang.Object

org.apache.lucene.search.FuzzyAutomatonBuilder

class FuzzyAutomatonBuilder
extends java.lang.Object

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.

Field Summary

Fields

Modifier and Type	Field	Description
private LevenshteinAutomata	levBuilder
private int	maxEdits
private java.lang.String	prefix
private java.lang.String	term
private int	termLength

Constructor Summary

Constructors

Constructor	Description
FuzzyAutomatonBuilder(java.lang.String term, int maxEdits, int prefixLength, boolean transpositions)

Method Summary

Modifier and Type	Method	Description
(package private) CompiledAutomaton[]	buildAutomatonSet()
(package private) CompiledAutomaton	buildMaxEditAutomaton()
(package private) int	getTermLength()
private static int[]	stringToUTF32(java.lang.String text)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

term

private final java.lang.String term

maxEdits

private final int maxEdits

levBuilder

private final LevenshteinAutomata levBuilder

prefix

private final java.lang.String prefix

termLength

private final int termLength

Constructor Detail

FuzzyAutomatonBuilder

FuzzyAutomatonBuilder(java.lang.String term,
                      int maxEdits,
                      int prefixLength,
                      boolean transpositions)

Method Detail

buildAutomatonSet

CompiledAutomaton[] buildAutomatonSet()

buildMaxEditAutomaton

CompiledAutomaton buildMaxEditAutomaton()

getTermLength

int getTermLength()

stringToUTF32

private static int[] stringToUTF32(java.lang.String text)