lia.analysis.CopyOfAnalyzerDemo.java Source code

Introduction

Here is the source code for lia.analysis.CopyOfAnalyzerDemo.java

Source

package lia.analysis;

/**
 * Copyright Manning Publications Co.
 *
 * 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 lan      
*/

import java.io.IOException;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.core.KeywordAnalyzer;
import org.apache.lucene.analysis.core.SimpleAnalyzer;
import org.apache.lucene.analysis.core.StopAnalyzer;
import org.apache.lucene.analysis.core.WhitespaceAnalyzer;
import org.apache.lucene.analysis.ko.KoreanAnalyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
import org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;
import org.apache.lucene.analysis.tokenattributes.TypeAttribute;
import org.apache.lucene.util.Version;

// From chapter 4

/**
 * Adapted from code which first appeared in a java.net article
 * written by Erik
 */
public class CopyOfAnalyzerDemo {
    private static final String[] examples = {

            "Make the best for smart business" };
    private static Analyzer[] analyzers;

    public static void main(String[] args) throws IOException {
        analyzers = new Analyzer[] { new WhitespaceAnalyzer(Version.LUCENE_46),
                new SimpleAnalyzer(Version.LUCENE_46), new StopAnalyzer(Version.LUCENE_46),
                new StandardAnalyzer(Version.LUCENE_46), new KeywordAnalyzer(),
                new KoreanAnalyzer(Version.LUCENE_46) };

        String[] strings = examples;

        for (String text : strings) {
            analyze(text);
        }
    }

    private static void analyze(String text) throws IOException {
        System.out.println("Analyzing \"" + text + "\"");
        for (Analyzer analyzer : analyzers) {
            String name = analyzer.getClass().getSimpleName();
            System.out.println(name);
            TokenStream stream = analyzer.tokenStream("dummy", text);
            stream.reset();

            CharTermAttribute termAttr = stream.addAttribute(CharTermAttribute.class);
            OffsetAttribute offsetAttr = stream.addAttribute(OffsetAttribute.class);
            TypeAttribute typeAttr = stream.addAttribute(TypeAttribute.class);
            PositionIncrementAttribute positionAttr = stream.addAttribute(PositionIncrementAttribute.class);

            while (stream.incrementToken()) {

                System.out.print("[" + termAttr + "] ");
            }
            System.out.println("");
        }
    }
}

// #A Analyze command-line strings, if specified
// #B Real work done in here