Package org.apache.lucene.analysis.hunspell

Class TrigramAutomaton

java.lang.Object

org.apache.lucene.analysis.hunspell.TrigramAutomaton

class TrigramAutomaton
extends java.lang.Object

An automaton allowing to achieve the same results as non-weighted GeneratingSuggester.ngramScore(int, java.lang.String, java.lang.String, boolean), but faster (in O(s2.length) time).

Field Summary

Fields

Modifier and Type	Field	Description
private CharacterRunAutomaton	automaton
private FixedBitSet	countedSubstrings
private char	minChar
private static int	N
private int[]	state2Score

Constructor Summary

Constructors

Constructor	Description
TrigramAutomaton(java.lang.String s1)

Method Summary

Modifier and Type	Method	Description
(package private) int	ngramScore(CharsRef s2)
private int	runAutomatonOnStringChars(java.lang.String s)
private int	substringScore(int state, FixedBitSet countedSubstrings)
(package private) char	transformChar(char c)

Methods inherited from class java.lang.Object

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

Field Detail

N

private static final int N

See Also:

Constant Field Values

automaton

private final CharacterRunAutomaton automaton

state2Score

private final int[] state2Score

countedSubstrings

private final FixedBitSet countedSubstrings

minChar

private final char minChar

Constructor Detail

TrigramAutomaton

TrigramAutomaton(java.lang.String s1)

Method Detail

runAutomatonOnStringChars

private int runAutomatonOnStringChars(java.lang.String s)

ngramScore

int ngramScore(CharsRef s2)

transformChar

char transformChar(char c)

substringScore

private int substringScore(int state,
                           FixedBitSet countedSubstrings)