groupmemberstool.java

java 写的一个新闻发布系统

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

package org.jahia.admin.users;

import java.io.IOException;
import java.util.Set;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.jahia.bin.Jahia;
import org.jahia.bin.JahiaAdministration;
import org.jahia.params.ParamBean;
import org.jahia.registries.ServicesRegistry;
import org.jahia.services.sites.JahiaSite;
import org.jahia.services.usermanager.JahiaUserManagerService;
import org.jahia.utils.JahiaConsole;
import org.jahia.viewhelper.UsersViewHelper;

/**
 * desc:  This class is used by the administration to select future group members.
 *
 * Copyright:    Copyright (c) 2002
 * Company:      Jahia Ltd
 *
 * @version 1.0
 */
public class GroupMembersTool
{
    private static final String CLASS_NAME = GroupMembersTool.class.getName();
    private static final String JSP_PATH = JahiaAdministration.JSP_PATH;

    private static Set _searchResult = null;
    private JahiaSite jahiaSite;
    private static UsersViewHelper usersViewHelper;

    public static final String ENGINE_LAUNCHER_NAME = CLASS_NAME;

    /**
     * Default constructor.
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session.
     */
    public GroupMembersTool(HttpServletRequest request, HttpServletResponse response,
                            HttpSession session)
    {
        // get the current website. get the jahiaserver if it's null...
        jahiaSite = (JahiaSite)session.getAttribute(ParamBean.SESSION_SITE);
        // create the user view helper.
        usersViewHelper = new UsersViewHelper(jahiaSite);
        // continue the execution of the request...
        requestDispatcher(request, response, session);
    }

    /**
     * This method is used like a dispatcher for home page tool requests.
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session.
     */
    public void requestDispatcher(HttpServletRequest request,
                                  HttpServletResponse response,
                                  HttpSession session)
    {
        String operation = request.getParameter("subaction");
        if (operation.equals("display")) {
            displayGroupMembersTool(request, response, session);
        } else if (operation.equals("search")) {
            _searchResult = null;
            displayGroupMembersTool(request, response, session);
        }
    }

    /**
     * Forward the servlet request and servlet response objects, using the request
     * dispatcher (from the ServletContext). Note: please be careful, use only
     * context relative path.
     *
     * @param       request             servlet request.
     * @param       response            servlet response.
     * @param       target              target, context-relative path.
     */
    private void doRedirect(HttpServletRequest request,
                            HttpServletResponse response,
                            HttpSession session,
                            String target )
    {
        try
        {
            JahiaAdministration.doRedirect(request, response, session, target);

        } catch (IOException ie) {
            JahiaConsole.println(CLASS_NAME+".doRedirect() :" , "error " + ie.getMessage());
        } catch (ServletException se) {
            JahiaConsole.println(CLASS_NAME+".doRedirect() :",  "error " + se.getMessage());
        }
    }

    /**
     * Display the group members issuing from the user search engine.
     *
     * @param request
     * @param response
     * @param session
     */
    private void displayGroupMembersTool(HttpServletRequest request,
                                         HttpServletResponse response,
                                         HttpSession session)
    {
        JahiaConsole.println(CLASS_NAME+".displayGroupMembersTool", "Started");
        JahiaUserManagerService uMgr = ServicesRegistry.getInstance().getJahiaUserManagerService();
        request.setAttribute("providerList", uMgr.getProviderList());
        if (_searchResult == null) {
            _searchResult = usersViewHelper.getSearchResult(request);
        }
        request.setAttribute("resultList", usersViewHelper.getUserListForDisplay(_searchResult));
        request.setAttribute("userSearch", JSP_PATH + "/user_management/user_search.jsp");
        request.setAttribute("jspSource", JSP_PATH + "/group_management/group_members_tool.jsp");
        session.setAttribute("jahiaDisplayMessage", Jahia.COPYRIGHT);
        doRedirect(request, response, session, JSP_PATH + "/adminpopup.jsp");
    }

}