ldapservlet.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: 1.13 $ $Date: 2006/01/25 16:56:19 $
 *
 *  Copyright (c) 2003-2004 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.util.*;

import com.ultraseek.xpa.ldap.*;
import com.ultraseek.xpa.search.*;
import com.ultraseek.xpa.server.*;

/**
 * Servlet customized to search both Ultraseek and an LDAP server.
 * This Servlet demonstrates how to customize the SearchServlet Sample.
 * In this example, the SearchMenu dropdown is changed
 * to provide three choices:
 * <ul>
 * <li>Search both an Ultraseek and an LDAP server (merging results)
 * <li>Search LDAP server only.
 * <li>Search Ultraseek Server only.
 * </ul>
 * <p>
 * This servlet requires version 2.2 of the HttpServlet specification.
 * <p>
 * As an additional example, result URLs are rewritten to go through a 
 * redirection page, where the query, hit number, and URL can be
 * logged.
 * <p>
 * The LDAP server and base distinguished name must be changed to the
 * right values for your installation.
 *
 * @since XPA2.1
 * @see SearchServlet
 * @see CounterServlet
 * @see LDAPServer
 * @see CounterSearchable
 * @see CounterURLRewriter
 * @requires Servlet 2.2
 * @serial exclude
 */
public class LDAPServlet
  extends SearchServlet
{

  /**
   * Creates the menu of search choices.
   * Overrides the default menu created in SearchServlet.
   * In this case we have
   * <ul>
   * <li>a menu item for searching an Ultraseek server
   * <li>a menu item for searching an LDAP server
   * <li>and a menu item for searching both servers, merging results.
   * </ul>
   * The default option for search (the first menu item) 
   * is to search both servers.
   */
  protected void initSearchMenu() {
    String ldapServerName = getServletConfig().getInitParameter("LDAPServerName");
    String ldapOU         = getServletConfig().getInitParameter("LDAPOU");

    if (ldapServerName==null) ldapServerName = "ldap.yourcompany.com";
    if (ldapOU==null)         ldapOU         = "ou=people,dc=yourcompany,dc=com";
    LDAPServer   ldap = new LDAPServer();
    ldap.setHost(ldapServerName);
    ldap.setTimeout(5*1000);            // five seconds, in milliseconds
    LDAPSearchCollection phones =
      ldap.defineSearchCollection("phones", ldapOU);
    phones.setName("Phonebook");

    // Relevance rank the LDAP results, then cache those results
    // so they don't need to be re-ranked every time. Base the
    // cache lifetime on the LDAP cache.
    RankingSearchable phonesRanked = new RankingSearchable(phones);
    CachingSearchable cachedPhonesR = new CachingSearchable(phonesRanked);
    cachedPhonesR.setCacheLifetime(ldap.getCacheLifetime()/2);

    SortedMap newMenu = new TreeMap();
    SearchMenuItem sm_phones;
    //                              Key       printname         server     Searchable     Spell  QLinks
    sm_phones = new SearchMenuItem("phones", "Phonebook Only", ldap,      cachedPhonesR, null,    null);
    newMenu.put(sm_phones.ID, sm_phones);

    if (ultraseek!=null) {

      // Create a searchable which queries both LDAP and Ultraseek,
      // combining the results into a single, ranked list.
      Searchable bothServers =
        new CompositeSearchable(new Searchable[]{ultraseek,cachedPhonesR});

      // Rewrite all URLs to go through a redirection page, where
      // the hit number, query, and URL can be logged.
      CounterURLRewriter allRewriter =
        new CounterURLRewriter("/search/count.html", "all");
      bothServers = new CounterSearchable(bothServers, allRewriter);

      SpellServer speller = ultraseek.getSpeller();
      QuickLinksSearchable ql = ultraseek.getQuickLinksSearchable();

      SearchMenuItem sm_all, sm_web;
      //                              Key       printname         server     Searchable     Spell  QLinks
      sm_all    = new SearchMenuItem("all",    "All Ultraseek",  ultraseek, bothServers,   speller, ql);
      sm_web    = new SearchMenuItem("web",    "Web Pages Only", ultraseek, ultraseek,     speller, ql);

      newMenu.put(sm_all.ID,    sm_all);
      newMenu.put(sm_web.ID,    sm_web);
    }
    searchMenu = newMenu;
  }

}