Examples of org.apache.lucene.search.spell.DirectSpellChecker

org.apache.lucene.search.spell.DirectSpellChecker
Simple automaton-based spellchecker.
Candidates are presented directly from the term dictionary, based on Levenshtein distance. This is an alternative to {@link SpellChecker}if you are using an edit-distance-like metric such as Levenshtein or {@link JaroWinklerDistance}.
A practical benefit of this spellchecker is that it requires no additional datastructures (neither in RAM nor on disk) to do its work. @see LevenshteinAutomata @see FuzzyTermsEnum @lucene.experimental

                    break;
                default:
                    sort = Sort.RELEVANCE;
                    break;
            }
      checker=new DirectSpellChecker();
        } catch (ParseException e) {
            errorMsg = PARSE_ERROR_MSG + e.getMessage();
        } catch (FileNotFoundException e) {
//          errorMsg = "Index database(s) not found: " + e.getMessage();
            errorMsg = "Index database(s) not found.";

View Full Code Here


public final class TermSuggester extends Suggester<TermSuggestionContext> {


    @Override
    public TermSuggestion innerExecute(String name, TermSuggestionContext suggestion, IndexReader indexReader, CharsRefBuilder spare) throws IOException {
        DirectSpellChecker directSpellChecker = SuggestUtils.getDirectSpellChecker(suggestion.getDirectSpellCheckerSettings());


        TermSuggestion response = new TermSuggestion(
                name, suggestion.getSize(), suggestion.getDirectSpellCheckerSettings().sort()
        );
        List<Token> tokens = queryTerms(suggestion, spare);
        for (Token token : tokens) {
            // TODO: Extend DirectSpellChecker in 4.1, to get the raw suggested words as BytesRef
            SuggestWord[] suggestedWords = directSpellChecker.suggestSimilar(
                    token.term, suggestion.getShardSize(), indexReader, suggestion.getDirectSpellCheckerSettings().suggestMode()
            );
            Text key = new BytesText(new BytesArray(token.term.bytes()));
            TermSuggestion.Entry resultEntry = new TermSuggestion.Entry(key, token.startOffset, token.endOffset - token.startOffset);
            for (SuggestWord suggestWord : suggestedWords) {

View Full Code Here

        List<PhraseSuggestionContext.DirectCandidateGenerator>  generators = suggestion.generators();
        final int numGenerators = generators.size();
        final List<CandidateGenerator> gens = new ArrayList<>(generators.size());
        for (int i = 0; i < numGenerators; i++) {
            PhraseSuggestionContext.DirectCandidateGenerator generator = generators.get(i);
            DirectSpellChecker directSpellChecker = SuggestUtils.getDirectSpellChecker(generator);
            Terms terms = MultiFields.getTerms(indexReader, generator.field());
            if (terms !=  null) {
                gens.add(new DirectCandidateGenerator(directSpellChecker, generator.field(), generator.suggestMode(), 
                        indexReader, realWordErrorLikelihood, generator.size(), generator.preFilter(), generator.postFilter(), terms));    
            }

View Full Code Here

TOP

Related Classes of org.apache.lucene.search.spell.DirectSpellChecker

org.apache.lucene.index.Term

org.apache.lucene.index.Terms

org.apache.lucene.search.BoostAttribute

org.apache.lucene.search.FuzzyTermsEnum

org.apache.lucene.search.MaxNonCompetitiveBoostAttribute

org.apache.lucene.util.AttributeSource

org.apache.lucene.util.BytesRef

org.apache.lucene.util.CharsRef

org.elasticsearch.search.suggest.phrase.PhraseSuggester

org.elasticsearch.search.suggest.term.TermSuggester

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.