Lucene example source code file (Sample.java)

This example Lucene source code file (Sample.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Lucene tags/keywords

adddocs, adddoctask, closeindextask, config, createindextask, createindextask, exception, io, perfrundata, properties, properties, repsumbynametask, repsumbynametask, tasksequence, tasksequence, util

The Lucene Sample.java source code

package org.apache.lucene.benchmark.byTask.programmatic;

/**
 * Copyright 2005 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 java.io.IOException;
import java.util.Properties;

import org.apache.lucene.benchmark.byTask.PerfRunData;
import org.apache.lucene.benchmark.byTask.tasks.AddDocTask;
import org.apache.lucene.benchmark.byTask.tasks.CloseIndexTask;
import org.apache.lucene.benchmark.byTask.tasks.CreateIndexTask;
import org.apache.lucene.benchmark.byTask.tasks.RepSumByNameTask;
import org.apache.lucene.benchmark.byTask.tasks.TaskSequence;
import org.apache.lucene.benchmark.byTask.utils.Config;

/**
 * Sample performance test written programmatically - no algorithm file is needed here.
 */
public class Sample {

  /**
   * @param args
   * @throws Exception 
   * @throws IOException 
   */
  public static void main(String[] args) throws Exception {
    Properties p = initProps();
    Config conf = new Config(p);
    PerfRunData runData = new PerfRunData(conf);
    
    // 1. top sequence
    TaskSequence top = new TaskSequence(runData,null,null,false); // top level, not parallel
    
    // 2. task to create the index
    CreateIndexTask create = new CreateIndexTask(runData);
    top.addTask(create);
    
    // 3. task seq to add 500 docs (order matters - top to bottom - add seq to top, only then add to seq)
    TaskSequence seq1 = new TaskSequence(runData,"AddDocs",top,false);
    seq1.setRepetitions(500);
    seq1.setNoChildReport();
    top.addTask(seq1);

    // 4. task to add the doc
    AddDocTask addDoc = new AddDocTask(runData);
    //addDoc.setParams("1200"); // doc size limit if supported
    seq1.addTask(addDoc); // order matters 9see comment above)

    // 5. task to close the index
    CloseIndexTask close = new CloseIndexTask(runData);
    top.addTask(close);

    // task to report
    RepSumByNameTask rep = new RepSumByNameTask(runData);
    top.addTask(rep);

    // print algorithm
    System.out.println(top.toString());
    
    // execute
    top.doLogic();
  }

  // Sample programmatic settings. Could also read from file.
  private static Properties initProps() {
    Properties p = new Properties();
    p.setProperty ( "task.max.depth.log"  , "3" );
    p.setProperty ( "max.buffered"        , "buf:10:10:100:100:10:10:100:100" );
    p.setProperty ( "doc.maker"           , "org.apache.lucene.benchmark.byTask.feeds.ReutersContentSource" );
    p.setProperty ( "log.step"            , "2000" );
    p.setProperty ( "doc.delete.step"     , "8" );
    p.setProperty ( "analyzer"            , "org.apache.lucene.analysis.standard.StandardAnalyzer" );
    p.setProperty ( "doc.term.vector"     , "false" );
    p.setProperty ( "directory"           , "FSDirectory" );
    p.setProperty ( "query.maker"         , "org.apache.lucene.benchmark.byTask.feeds.ReutersQueryMaker" );
    p.setProperty ( "doc.stored"          , "true" );
    p.setProperty ( "docs.dir"            , "reuters-out" );
    p.setProperty ( "compound"            , "cmpnd:true:true:true:true:false:false:false:false" );
    p.setProperty ( "doc.tokenized"       , "true" );
    p.setProperty ( "merge.factor"        , "mrg:10:100:10:100:10:100:10:100" );
    return p;
  }
  
  

}