usersviewhelper.java

java 写的一个新闻发布系统

//
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//            __   .____|    |       \   |    +----+       \
//    _______|  /--|    |    |    -   \  _    |    :    -   \_________
//   \\______: :---|    :    :           |    :    |         \________>
//           |__\---\_____________:______:    :____|____:_____\
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//              . . . i n   j a h i a   w e   t r u s t . . .
//
//

package org.jahia.viewhelper;

import java.util.*;
import javax.servlet.http.HttpServletRequest;
import org.jahia.registries.ServicesRegistry;
import org.jahia.services.sites.JahiaSite;
import org.jahia.services.usermanager.*;
import org.jahia.utils.JahiaConsole;
import org.jahia.utils.JahiaString;
import org.jahia.utils.JahiaTools;

/**
 * desc: The role of this class is to prepare and format user datas for
 *  display according to the JSP files needs in administration and engine.
 *
 * Copyright:    Copyright (c) 2002
 * Company:      Jahia Ltd
 *
 * @author Philippe Martin
 *
 * @version 1.0
 */
public class UsersViewHelper {

    /**
     * Constructor : initialize the jahia site and the user manager service.
     * @param js a JahiaSite object
     */
    public UsersViewHelper(JahiaSite js) {
        jahiaSite = js;
        jahiaUserManagerService = ServicesRegistry.getInstance().getJahiaUserManagerService();
    }

    /**
     * Get the user search result from the parameter form given by the request.
     * If the form is not in the request then all the Jahia users will be search.
     *
     * @param request the request that should contain the HTML formular with the
     * following fields :
     * - searchString
     * - searchIn
     * - properties
     * - storedOn
     * - providers
     * @return a Properties object that contain the search criterium
     */
    public Set getSearchResult(HttpServletRequest request) {

        String searchString = request.getParameter("searchString");
        String searchIn = request.getParameter("searchIn");
        String[] searchInProps = request.getParameterValues("properties");
        String storedOn = request.getParameter("storedOn");
        String[] providers = request.getParameterValues("providers");

        Properties searchParameters = new Properties();
        Set searchResults = new HashSet();
        if (searchIn == null) { // Necessary condition to say there is no formular.
            JahiaConsole.println(CLASS_NAME + ".getSearchParameters",
                                 "No formular transmited. Finding all Jahia DB users.");
            searchParameters.setProperty("*", "*");
            searchResults.addAll(jahiaUserManagerService.
                searchUsers("jahia_db", jahiaSite.getID(), searchParameters));
        } else {
            //if (searchString == null || "".equals(searchString)) {
            if ("".equals(searchString)) {
                searchString = "*";
            }
            if ("allProps".equals(searchIn) || searchInProps == null) {
                searchParameters.setProperty("*", searchString);
            } else {
                for (int i = 0; i < searchInProps.length; i++) {
                    searchParameters.setProperty(searchInProps[i], searchString);
                }
            }
            if ("everywhere".equals(storedOn) || providers == null) {
                searchResults.addAll(jahiaUserManagerService.
                    searchUsers(jahiaSite.getID(), searchParameters));
            } else {
                for (int i = 0; i < providers.length; i++) {
                    String curServer = providers[i];
                    Set curSearchResults = jahiaUserManagerService.
                        searchUsers(curServer, jahiaSite.getID(), searchParameters);
                    if (curSearchResults != null) {
                        searchResults.addAll(curSearchResults);
                    }
                }
            }
        }
        return searchResults;
    }

    /**
     * Return an ArrayList object containing the user in a specific format for
     * the HTML select box.
     *
     * @param searchResults a set of jahia user given by the method "getSearchResult".
     * @return the result list containing the formatted string user that will be
     * display in the JSP select box. (see the user_display.jsp file).
     */
    public ArrayList getUserListForDisplay(Set searchResults) { //String format = null) {

        ArrayList resultList = new ArrayList();
        Iterator resultListEnum = searchResults.iterator();
        while (resultListEnum.hasNext()) {
            JahiaUser user = (JahiaUser) resultListEnum.next();
            // is user declared in site or just a member of it ?
            if (jahiaUserManagerService.lookupUser(jahiaSite.getID(), user.getUsername()) == null) {
                // user is just a member, not created in this site,
                // let's ignore him for the moment
            } else {
                String provider = JahiaString.adjustStringSize(user.getProviderName(), 6) + " ";
                String usrname = JahiaString.adjustStringSize(user.getUsername(), 15);
                // Find a displayable user property
                String properties = "";
                String firstname = user.getProperty("firstname");
                String lastname = user.getProperty("lastname");
                if (firstname != null) {
                    properties += firstname;
                    if (firstname.length() < 20) properties += " ";
                }
                if (lastname != null) properties += lastname;
                if ("".equals(properties)) {
                    String email = user.getProperty("email");
                    if (email != null) properties += email;
                }
                properties = JahiaString.adjustStringSize(properties, 20);
                String resultValue = "u " + provider + " " + user.getUsername();
                String result = "u " + provider + usrname + " " + properties;
                resultList.add(JahiaTools.replacePattern(resultValue, " ", "&nbsp;"));
                resultList.add(JahiaTools.replacePattern(result, " ", "&nbsp;"));
            }
        }
        return resultList;
    }

    private static final String CLASS_NAME = UsersViewHelper.class.getName();

    private JahiaUserManagerService jahiaUserManagerService;
    private JahiaSite jahiaSite;

}