Dateiinhalt

// DO NOT CHANGE THIS PACKAGE NAME.
package ue_inforet_bool_wordnet_study;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class BooleanQueryWordnet {

  /**
   * DO NOT ADD ADDITIONAL PARAMETERS TO THE SIGNATURE 
   * OF THE CONSTRUCTOR.
   * 
   */
  public BooleanQueryWordnet() {
  	// TODO you may insert code here
  }

  /**
   * A method for parsing the WortNet synsets. 
   * The data.[noun, verb, adj, adv] files contain the synsets.​
	 * The [noun, verb, adj, adv].exc	files contain the base forms 
	 * of irregular words.
	 * 
	 * Please refer to ​
   *  http://wordnet.princeton.edu/man/wndb.5WN.html
   * regarding the syntax of these plain files.​
   * 
   * DO NOT CHANGE THIS METHOD'S INTERFACE.
   * 
   * @param wordnetDir the directory of the wordnet files
   */
  public void buildSynsets(String wordnetDir) {
    // TODO: insert code here
  }
  
  /**
   * A method for reading the textual movie plot file and building a Lucene index. 
   * The purpose of the index is to speed up subsequent boolean searches using
   * the {@link #booleanQuery(String) booleanQuery} method.
   * 
   * DO NOT CHANGE THIS METHOD'S INTERFACE.
   * 
   * @param plotFile
   *          the textual movie plot file 'plot.list', obtainable from <a
   *          href="http://www.imdb.com/interfaces"
   *          >http://www.imdb.com/interfaces</a> for personal, non-commercial
   *          use.
   */
  public void buildIndices(String plotFile) {
    // TODO: insert code here
  }

  /**
   * A method for performing a boolean search on a textual movie plot file after
   * Lucene indices were built using the {@link #buildIndices(String) buildIndices}
   * method. The movie plot file contains entries of the <b>types</b> movie,
   * series, episode, television, video, and videogame. This method allows queries
   * following the Lucene query syntax on any of the <b>fields</b> title, plot, year, 
   * episode, and type. Note that queries are case-insensitive and stop words are 
   * removed.<br>
   * <br>
   *
   * More details on the query syntax can be found at <a
   * href="http://www.lucenetutorial.com/lucene-query-syntax.html">
   * http://www.lucenetutorial.com/lucene-query-syntax.html</a>.
   * 
   * DO NOT CHANGE THIS METHOD'S INTERFACE.
   * 
   * @param queryString
   *          the query string, formatted according to the Lucene query syntax.
   * @return the exact content (in the textual movie plot file) of the title
   *         lines (starting with "MV: ") of the documents matching the query
   */
  public Set<String> booleanQuery(String queryString) {
    // TODO: insert code here
    return new HashSet<>();
  }
  
  /**
   * A method for closing any open file handels or a ThreadPool.
   * 
   * DO NOT CHANGE THIS METHOD'S INTERFACE.
   */
  public void close() {
    // TODO: you may insert code here
  }

  public static void main(String[] args) {
  	 if (args.length < 4) {
       System.err
       .println("usage: java -jar BooleanQueryWordnet.jar <plot list file> <wordnet directory> <queries file> <results file>");
       System.exit(-1);
     }

     // build indices
     System.out.println("building indices...");
     long tic = System.nanoTime();
     Runtime runtime = Runtime.getRuntime();
     long mem = runtime.totalMemory();
     
     // the directory to the wordnet-files: [*.exc], [data.*]
     String plotFile = args[0];
     String wordNetDir = args[1];
     
     BooleanQueryWordnet bq = new BooleanQueryWordnet();
     bq.buildSynsets(wordNetDir);

     bq.buildIndices(plotFile);
     System.gc();
     try {
       Thread.sleep(10);
     } catch (InterruptedException e1) {
       e1.printStackTrace();
     }
     
     System.out
     .println("runtime: " + (System.nanoTime() - tic) + " nanoseconds");
     System.out
     .println("memory: " + ((runtime.totalMemory() - mem) / (1048576l))
         + " MB (rough estimate)");

     // parsing the queries that are to be run from the queries file
     List<String> queries = new ArrayList<>();
     try (BufferedReader reader = new BufferedReader(new InputStreamReader(
         new FileInputStream(args[2]), StandardCharsets.ISO_8859_1))) {
       String line;
       while ((line = reader.readLine()) != null)
         queries.add(line);
     } catch (IOException e) {
       e.printStackTrace();
       System.exit(-1);
     }

     // parsing the queries' expected results from the results file
     List<Set<String>> results = new ArrayList<>();
     try (BufferedReader reader = new BufferedReader(new InputStreamReader(
         new FileInputStream(args[3]), StandardCharsets.ISO_8859_1))) {
       String line;
       while ((line = reader.readLine()) != null) {
         Set<String> result = new HashSet<>();
         results.add(result);
         for (int i = 0; i < Integer.parseInt(line); i++) {
           result.add(reader.readLine());
         }
       }
     } catch (IOException e) {
       e.printStackTrace();
       System.exit(-1);
     }

     // run queries
     for (int i = 0; i < queries.size(); i++) {
       String query = queries.get(i);
       Set<String> expectedResult = i < results.size() ? results.get(i)
           : new HashSet<>();
       System.out.println();
       System.out.println("query:           " + query);
       tic = System.nanoTime();
       Set<String> actualResult = bq.booleanQuery(query);

       // sort expected and determined results for human readability
       List<String> expectedResultSorted = new ArrayList<>(expectedResult);
       List<String> actualResultSorted = new ArrayList<>(actualResult);
       Comparator<String> stringComparator = new Comparator<String>() {
         @Override
         public int compare(String o1, String o2) {
           return o1.compareTo(o2);
         }
       };
       expectedResultSorted.sort(stringComparator);
       actualResultSorted.sort(stringComparator);

       System.out.println("runtime:         " + (System.nanoTime() - tic)
           + " nanoseconds.");
       System.out.println("expected result (" + expectedResultSorted.size() + "): " + expectedResultSorted.toString());
       System.out.println("actual result (" + actualResultSorted.size() + "):   " + actualResultSorted.toString());
       System.out.println(expectedResult.equals(actualResult) ? "SUCCESS"
           : "FAILURE");    
     }  

     bq.close();
  }

}