com.discursive.jccook.xml.bardsearch.TermFreq.java Source code

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Here is the source code for com.discursive.jccook.xml.bardsearch.TermFreq.java

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/* 
 * ========================================================================
 * 
 * Copyright 2005 Tim O'Brien.
 *
 * 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 com.discursive.jccook.xml.bardsearch;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.lang.builder.CompareToBuilder;
import org.apache.log4j.Logger;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.TermEnum;

import com.discursive.jccook.util.LogInit;

public class TermFreq {
    private static Logger logger = Logger.getLogger(TermFreq.class);
    static {
        LogInit.init();
    }

    public static void main(String[] pArgs) throws Exception {
        logger.info("Threshold is 200");
        Integer threshold = new Integer(200);

        IndexReader reader = IndexReader.open("index");
        TermEnum enumVar = reader.terms();
        List termList = new ArrayList();
        while (enumVar.next()) {
            if (enumVar.docFreq() >= threshold.intValue() && enumVar.term().field().equals("speech")) {
                Freq freq = new Freq(enumVar.term().text(), enumVar.docFreq());
                termList.add(freq);
            }
        }
        Collections.sort(termList);
        Collections.reverse(termList);

        System.out.println("Frequency | Term");
        Iterator iterator = termList.iterator();
        while (iterator.hasNext()) {
            Freq freq = (Freq) iterator.next();
            System.out.print(freq.frequency);
            System.out.println(" | " + freq.term);
        }
    }

    public static class Freq implements Comparable {
        String term;
        int frequency;

        public Freq(String term, int frequency) {
            this.term = term;
            this.frequency = frequency;
        }

        public int compareTo(Object o) {
            if (o instanceof Freq) {
                Freq oFreq = (Freq) o;
                return new CompareToBuilder().append(frequency, oFreq.frequency).append(term, oFreq.term)
                        .toComparison();
            } else {
                return 0;
            }
        }
    }
}