TrigramAutomaton

java.lang.Object

org.apache.lucene.analysis.hunspell.TrigramAutomaton

class TrigramAutomaton extends 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 final CharacterRunAutomaton

automaton

private final FixedBitSet

countedSubstrings

private final char

maxChar

private final char

minChar

private static final int

N

private final int[]

state2Score
Constructor Summary

Constructors

Constructor

Description

TrigramAutomaton(String s1)
Method Summary

Modifier and Type

Method

Description

(package private) int

ngramScore(CharsRef s2)

private int

runAutomatonOnStringChars(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 Details
- 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
- maxChar
  
  private final char maxChar
Constructor Details
- TrigramAutomaton
  
  TrigramAutomaton(String s1)
Method Details
- runAutomatonOnStringChars
  
  private int runAutomatonOnStringChars(String s)
- ngramScore
  
  int ngramScore(CharsRef s2)
- transformChar
  
  char transformChar(char c)
- substringScore
  
  private int substringScore(int state, FixedBitSet countedSubstrings)