info.johtani.jjug.lucene.sample.TokenizeSample.java Source code

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Here is the source code for info.johtani.jjug.lucene.sample.TokenizeSample.java

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/*
 * Copyright 2013 Jun Ohtani
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package info.johtani.jjug.lucene.sample;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.ja.*;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
import org.apache.lucene.analysis.util.TokenizerFactory;

import java.io.IOException;
import java.io.Reader;

/**
 * Tokenize sample for JJUG Night Seminar
 *
 * Created by johtani on 14/12/16.
 */
public class TokenizeSample {

    public static void main(String[] args) {

        String[] texts = { "johtani talks about lucene and kuromoji.",
                "JJUG?Lucene?????johtani?????",
                //            "JJUG CCC?Elasticsearch?Kibana????johtani?????",
                //            "Elasticsearch?Kibana4????johtani?????"
        };

        Analyzer analyzer = getAnalyzer();

        for (String text : texts) {
            printToken(text, analyzer);
        }
        analyzer.close();
    }

    private static Analyzer getAnalyzer() {
        Analyzer analyzer;

        //??Analyzer
        analyzer = new StandardAnalyzer();

        //Analyzer
        //analyzer = new JapaneseAnalyzer();

        //AnalyzerTokenizer?TokenFilter?????
        //
        //        analyzer = new Analyzer() {
        //
        //            @Override
        //            protected TokenStreamComponents createComponents(String s, Reader reader) {
        //
        //                //Kuromoji?Tokenizer
        //                Tokenizer tokenizer = new JapaneseTokenizer(reader, null, false, JapaneseTokenizer.Mode.NORMAL);
        //                TokenStream tokenStream;
        //                //????TokenFilter
        //                tokenStream = new JapaneseBaseFormFilter(tokenizer);
        //                //???????????TokenFilter
        //                tokenStream = new JapaneseReadingFormFilter(tokenStream);
        //
        //                return new TokenStreamComponents(tokenizer, tokenStream);
        //            }
        //
        //        };

        return analyzer;
    }

    private static void printToken(String text, Analyzer analyzer) {
        System.out.println("--- Original: [" + text + "]");
        try {
            TokenStream tokens = analyzer.tokenStream("content", text);
            tokens.reset();
            CharTermAttribute termAttr = tokens.getAttribute(CharTermAttribute.class);
            while (tokens.incrementToken()) {
                System.out.println("[" + termAttr.toString() + "]");
            }
            tokens.reset();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}