jp.mwsoft.cjkanalyzers.CJKAnalyzerNoSplitKatakana.java Source code

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Here is the source code for jp.mwsoft.cjkanalyzers.CJKAnalyzerNoSplitKatakana.java

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package jp.mwsoft.cjkanalyzers;

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.StopFilter;
import org.apache.lucene.analysis.StopwordAnalyzerBase;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.cjk.CJKAnalyzer;
import org.apache.lucene.util.Version;

import java.io.Reader;
import java.util.HashSet;
import java.util.Set;

import jp.mwsoft.cjkanalyzers.CJKAnalyzerBase.DefaultSetHolder;

/**
 * An {@link Analyzer} that tokenizes text with
 * {@link CJKTokenizer} and filters with {@link StopFilter}
 * 
 */
public final class CJKAnalyzerNoSplitKatakana extends StopwordAnalyzerBase {

    public static void main(String[] args) throws Exception {

        Set<String> stopWords = new HashSet<String>();
        stopWords.add("??");
        stopWords.add("??");

        java.io.StringReader reader = new java.io.StringReader("??????");

        CJKAnalyzer analyzer = new CJKAnalyzer(Version.LUCENE_35);
        TokenStream stream = analyzer.tokenStream("test", reader);

        for (int i = 0; i < 10; i++) {
            stream.incrementToken();
            System.out.println(stream);
        }
    }

    // ~ Constructors
    // -----------------------------------------------------------

    /**
     * Builds an analyzer which removes words in {@link #getDefaultStopSet()}.
     */
    public CJKAnalyzerNoSplitKatakana(Version matchVersion) {
        this(matchVersion, DefaultSetHolder.DEFAULT_STOP_SET);
    }

    /**
     * Builds an analyzer with the given stop words
     * 
     * @param matchVersion
     *            lucene compatibility version
     * @param stopwords
     *            a stopword set
     */
    public CJKAnalyzerNoSplitKatakana(Version matchVersion, Set<?> stopwords) {
        super(matchVersion, stopwords);
    }

    // ~ Methods
    // ----------------------------------------------------------------

    @Override
    protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
        final Tokenizer source = new CJKTokenizerNoSplitKatakana(reader);
        return new TokenStreamComponents(source, new StopFilter(matchVersion, source, stopwords));
    }
}