querytransform.java

关于Ultraseek的一些用法,刚初学,所以都是比较简单

/* -*- mode:java; indent-tabs-mode:nil; c-basic-offset:2 -*-
 *
 *  $RCSFile$ $Revision: 1.8 $ $Date: 2006/02/01 00:20:30 $
 *
 *  Copyright (c) 2001-2002 Autonomy Corp.  All Rights Reserved.
 *  Permission to use, copy, modify, and distribute this file is hereby
 *  granted without fee, provided that the above copyright notice appear
 *  in all copies.
 */

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Collection;
import java.util.Iterator;
import java.util.NoSuchElementException;

import com.ultraseek.xpa.search.Query;
import com.ultraseek.xpa.search.QueryUtil;
import com.ultraseek.xpa.search.SearchResult;
import com.ultraseek.xpa.search.SearchResultList;
import com.ultraseek.xpa.search.SearchServer;
import com.ultraseek.xpa.search.SearchTopic;
import com.ultraseek.xpa.server.UltraseekServer;

/**
 *  A simple demo application that searches 
 *  a running Ultraseek instance
 *  after performing various query transformations
 */
public class QueryTransform {
  QueryTransform() { }
  public static void main(String[] args) throws Exception {
    InputStreamReader inputStreamReader = new InputStreamReader(System.in);
    BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
    System.out.println();
    System.out.println("This is a simple demo application that searches");
    System.out.println("a running Ultraseek instance.");
    System.out.println("after performing various query transformations.");
    System.out.println();
    System.out.println("Enter the hostname and TCP port of your");
    System.out.println("running Ultraseek instance.");
    System.out.print("hostname: ");
    String host = bufferedReader.readLine();
    System.out.print("TCP port: ");
    int port = Integer.parseInt(bufferedReader.readLine());
    SearchServer searchServer = new UltraseekServer(host,port);
    System.out.println();
    for (;;) {
      System.out.println();
      System.out.println("Enter a query.");
      System.out.print("search: ");
      String line = bufferedReader.readLine();
      if (line==null) break;
      Query query = Query.parse(line);
      System.out.println();
      System.out.println("Here is the Query object:");
      System.out.println(query);
      query = QueryUtil.lowercase(query);
      System.out.println("\nThe query in lowercase: "+QueryUtil.unparse(query));
      System.out.println("Here is the lowercase Query object:");
      System.out.println(query);
    }
  }

  static void showResults(SearchServer searchServer, Query query)
  throws Exception {
      SearchResultList searchResultList = searchServer.search(query);
      System.out.println();
      System.out.println("Here is the SearchResultList object:");
      System.out.println(searchResultList);
      Collection relatedTopics = searchResultList.getRelatedTopics();
      System.out.println();
      if (!relatedTopics.isEmpty()) {
        System.out.println("Here are the SearchTopic objects:");
        Iterator iterator = relatedTopics.iterator();
        while (iterator.hasNext()) {
          SearchTopic searchTopic = (SearchTopic)iterator.next();
          System.out.println(searchTopic);
        }
      } else {
        System.out.println("There are no SearchTopic objects.");
      }
      System.out.println();
      if (!searchResultList.isEmpty()) {
        System.out.println("Here are the SearchResult objects:");
        Iterator iterator = searchResultList.iterator();
        try {
          while (iterator.hasNext()) {
            SearchResult searchResult = (SearchResult)iterator.next();
            System.out.println();
            System.out.println(searchResult);
          }
        } catch (NoSuchElementException e) {
          /* No more results from server, not an error. */
        }
      } else {
        System.out.println("There are no SearchResult objects.");
      }
  }
}