showlastupdatedtopicsaction.java

jGossip是一个简单而功能强大的Java论坛软件（消息板）

/*
 * $$Id: ShowLastUpdatedTopicsAction.java,v 1.5 2004/06/18 10:25:26 bel70 Exp $$
 *
 * ***** BEGIN LICENSE BLOCK *****
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License
 * at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and
 * limitations under the License.
 *
 * The Original Code is JGossip forum code.
 *
 * The Initial Developer of the Original Code is the JResearch, Org.
 * Portions created by the Initial Developer are Copyright (C) 2004
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *              Dmitry Belov <[e-mail]>
 *
 * ***** END LICENSE BLOCK ***** */
/*
 * Created on Jul 13, 2003
 *
 */
package org.jresearch.gossip.actions.forum;

import java.lang.reflect.InvocationTargetException;
import java.sql.SQLException;
import java.util.Iterator;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.jresearch.gossip.IConst;
import org.jresearch.gossip.actions.BaseAction;
import org.jresearch.gossip.beans.forum.Message;
import org.jresearch.gossip.beans.forum.NewTopic;
import org.jresearch.gossip.beans.user.User;
import org.jresearch.gossip.dao.ForumDAO;
import org.jresearch.gossip.dao.UserDAO;
import org.jresearch.gossip.exception.SystemException;
import org.jresearch.gossip.forms.ListForm;
import org.jresearch.gossip.list.RecordsData;


/**
 * DOCUMENT ME!
 *
 * @author Bel
 */
public class ShowLastUpdatedTopicsAction extends BaseAction {
    /**
     * DOCUMENT ME!
     *
     * @param mapping DOCUMENT ME!
     * @param form DOCUMENT ME!
     * @param request DOCUMENT ME!
     * @param response DOCUMENT ME!
     *
     * @return DOCUMENT ME!
     */
    public ActionForward process(ActionMapping mapping, ActionForm form,
        HttpServletRequest request, HttpServletResponse response)
        throws SystemException {
        ListForm lform = (ListForm) form;

        ForumDAO dao = ForumDAO.getInstance();
        UserDAO userdao = UserDAO.getInstance();
        HttpSession session = request.getSession();

        User user = (User) session.getAttribute(IConst.SESSION.USER_KEY);

        try {
            dao.setDataSource(getDataSource(request));
            userdao.setDataSource(getDataSource(request));

            RecordsData recordsData = new RecordsData();
            dao.fillLastUpdatedTopicList(user, recordsData, lform.getBlock());
            Iterator it = recordsData.getRecords().iterator();

            while (it.hasNext()) {
                NewTopic nt = (NewTopic) it.next();
                Message mess = nt.getLastMessage();
                mess.setSenderInfo(userdao.getSenderInfo(mess.getSender()));
                nt.setMod_flag(dao.checkMod(nt.getForumid(), user) ? 1 : 0);
            }

            request.setAttribute(IConst.REQUEST.RECORDS_DATA, recordsData);
        } catch (SQLException sqle) {
            getServlet().log("Connection.process", sqle);
            throw new SystemException(sqle);
        } catch (InstantiationException e) {
            throw new SystemException(e);
        } catch (IllegalAccessException e) {
            throw new SystemException(e);
        } catch (InvocationTargetException e) {
            throw new SystemException(e);
        } catch (NoSuchMethodException e) {
            throw new SystemException(e);
        }

        return (mapping.findForward("newTopicsList"));
    }
}