driver651.Driver651.java Source code

Introduction

Here is the source code for driver651.Driver651.java

Source

package driver651;

/**
 * Copyright 2004 The Apache Software Foundation
 *
 * 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.
 */

import org.apache.lucene.analysis.WhitespaceAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.search.FieldCacheImpl;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.util.English;

import java.io.IOException;

import junit.framework.TestCase;

public class Driver651 {
    protected static IndexReader reader;
    public static final int NUM_DOCS = 100;

    public static final int NUM_FIELDS = 1000;

    Driver651(String s) {
    }

    public static void main(String[] args) throws Exception {
        //@FieldCacheImpl.java
        int threadNo = Integer.parseInt(args[0]);
        // 138 vs 179                 507 (original)  all-threads-one-cache
        // 1295      1779               one-thread-one-cache
        RAMDirectory directory = new RAMDirectory();
        IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(), true);
        int theInt = Integer.MAX_VALUE;
        for (int j = 0; j < NUM_FIELDS; j++) {
            for (int i = 0; i < NUM_DOCS; i++) {
                Document doc = new Document();
                doc.add(new Field("theField" + j, String.valueOf(theInt--), Field.Store.NO,
                        Field.Index.UN_TOKENIZED));// notice the field "theFieldj"
                writer.addDocument(doc);
            }
        }

        writer.close();
        reader = IndexReader.open(directory);

        FieldCacheImpl cache = new FieldCacheImpl();// move it out of the loop, then you get the all-threads-one-cache scenario!

        WorkerThread[] workers = new WorkerThread[threadNo];
        for (int i = 0; i < threadNo; i++) {

            workers[i] = new WorkerThread(cache);
        }
        long start = System.currentTimeMillis();
        for (int i = 0; i < threadNo; i++) {
            workers[i].start();
        }

        for (int i = 0; i < threadNo; i++) {
            workers[i].join();
        }

        long end = System.currentTimeMillis();
        System.out.println("duration: " + (end - start));
    }
}