spelling.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: 1.11 $ $Date: 2006/02/01 00:20:28 $
 *  Copyright (c) 2003 Autonomy Corp.  All Rights Reserved.
 */

import java.io.*;
import java.util.*;

import com.ultraseek.xpa.server.*;


/**
 * Spelling Suggestion sample application.
 * <p>
 * This application demonstrates how to use Ultraseek to
 * suggest queries based on the re-spelling of a search query.
 * <p>
 * The suggestions can vary based on the collections being searched,
 * and the <code>Locale</code> in use for the query.
 * <p>
 * To use this application, edit the file "Sample.properties" 
 * to point to your Ultraseek server.
 * <p>
 * Also edit the array <code>locales</code> to set the locales
 * to use for the demo.
 * 
 * @since XPA2.1
 * @see SpellServer
 * @see UltraseekServer#getSpeller
 * @requires Ultraseek 5.0
 */
public class Spelling {

  /* Locales to use for this demo of spelling suggestions */
  static Locale[] locales = {
    Locale.getDefault(),
    Locale.ENGLISH,
    Locale.FRENCH,
    Locale.GERMAN,
    new Locale("es","")              // Spanish
  };

  /**
   * Loads parameters from the file Sample.properties
   */
  static String getString(String key, String def) {
    try {
      String resourceName = System.getProperty("Sample");
      if (resourceName==null) resourceName = "Sample";
      ResourceBundle settings = ResourceBundle.getBundle( resourceName );
      return settings.getString(key);
    } catch (MissingResourceException e) {
      return def;
    } catch (Exception e) {
      System.out.println( "Property file problem: "  + e );
      return def;
    }
  }

  static final String serverName  = getString("UltraseekServer.host", 
                                              "software-demo.ultraseek.com");
  static final int    serverPort  = Integer.valueOf(getString("UltraseekServer.port", 
                                                              "80")).intValue();
  static final String serverProto = getString("UltraseekServer.protocol", 
                                              "http");
  static UltraseekServer server = new UltraseekServer(serverName, serverPort, serverProto);

  static Collection allCollections;       // All collections on 'server'
  static {
    try {
      allCollections = server.getSearchCollections();
    } catch (IOException e) {
      System.out.println( "Problem: " + e );
    };
  }

  /**
   * Creates a spelling suggestion for a query, using the specified
   * <code>Locale</code> and set of <code>UltraseekCollection</code>.
   */
  static void demoSuggestion(String msg, String query, 
                             Locale locale, 
                             Collection searchCollections) {

    if (locale==null) locale = Locale.getDefault();
    long start = System.currentTimeMillis();

    // Fetch a spelling suggestion
    String suggestion;
    try {
      // Get a speller for this set of collections.
      // Normally you would do this during initialization.
      SpellServer speller = server.getSpeller(searchCollections);
      suggestion = speller.getSuggestion(query,locale);
    } catch (IOException e) {
      // In a real application you would handle an IOException by
      // ignoring it, and not displaying any spelling suggestion.
      // In this demo, we will report the problem.
      suggestion = "Problem fetching suggestion: " + e;
    }

    long end = System.currentTimeMillis();
    StringBuffer sb = new StringBuffer(80);
    sb.append(msg);
    String part2 = " " + (end-start) + "ms";
    for (int i = sb.length() + part2.length(); i < 21; i++) sb.append( " " );
    sb.append(part2);
    sb.append( " --> " );

    if (!suggestion.equals("")) {
      // Highlight the differences from the original query
      String diffs[] = SpellServer.splitForHighlight(query,suggestion);
      for (int i = 0; i < diffs.length; i++) {
        if (i%2==1) sb.append("<<");
        sb.append(diffs[i]);
        if (i%2==1) sb.append(">>");
      }
    }
    System.out.println( sb.toString() );
  }

  /**
   * Create spelling suggestions for a query using different Locales.
   */
  static void demoLocales(String query) {
    System.out.println("\nLocale Demo      - Query: " + query);
    for (int i = 0; i < locales.length; i++) {
      demoSuggestion(locales[i].toString(), query, locales[i], null);
    }
  }

  /**
   * Create spelling suggestions for a query using different
   * search collections.
   */
  static void demoCollections(String query) {
    System.out.println("\nCollection Demo  - Query: " + query);
    demoSuggestion("<Default>", query, null, null);       // Default search
    demoSuggestion("<All>", query, null, allCollections); // All collections
    Iterator i = allCollections.iterator();
    while (i.hasNext()) {
      UltraseekCollection usc = (UltraseekCollection) i.next();
      Collection c = new ArrayList(1);
      c.add( usc );
      demoSuggestion(usc.getID(), query, null, c);
    }
  }

  static public void main(String args[]) 
    throws IOException {
    System.out.println("Spelling Demo");
    System.out.println("Using Ultraseek at " + server );
    System.out.println(" (version " + server.getVersionString() +")" );
    if (!server.versionAtLeast(5,0,0)) {
      System.out.println("Ultraseek version 5.0 (or newer) is required for this demo." );
      return;
    }

    System.out.println( "" );
    demoSuggestion("Welcome", 
                   "Ultraseek suggestss queries by re-spelling terms",
                   Locale.ENGLISH, null);

    System.out.println( "\n--- Suggested terms must exist in the searched collection" );
    demoCollections("Veerity Ultrasek missspelling deemo");

    System.out.println( "\n--- The user's Locale is used to guide suggestions" );
    demoLocales("helllo, bonjourr, gooten tag, hoola");

    InputStreamReader inputStreamReader = new InputStreamReader(System.in);
    BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
    while (true) {
      System.out.print("\nEnter a query (EOF to end): ");
      String line = bufferedReader.readLine();
      if (line==null) break;
      demoCollections( line );
      demoLocales( line );
    }
  }
}