001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.search.suggest;
016    
017    /**
018     * @author Michael C. Han
019     */
020    public interface Suggester {
021    
022            public <T> T accept(SuggesterVisitor<T> suggesterVisitor);
023    
024            public String getName();
025    
026            public enum Sort {
027    
028                    FREQUENCY, SCORE
029    
030            }
031    
032            public enum StringDistance {
033    
034                    DAMERAU_LEVENSHTEIN, INTERNAL, JAROWINKLER, LEVENSTEIN, NGRAM
035    
036            }
037    
038            public enum SuggestMode {
039    
040                    ALWAYS, MISSING, POPULAR
041    
042            }
043    
044    }