/*******************************************************************\*                                                                   **			   LightningBoard			    **                                                                   **          http://sourceforge.net/projects/lightningboard/          **			                                            **	            Copyright (c) 2002 Xiaobo Liu	            **                                                                   ***********************************************************************                        LICENSE INFORMATION                        **                                                                   **  LightningBoard is free software; you can redistribute it and/or  **  modify it under the terms of the GNU General Public License as   **  published by the Free Software Foundation; either version 2 of   **  the License, or any later version.                               **                                                                   **  We don't charge anything for the use of LightningBoard, we only  **  require you to keep the copyright present on your site and in    **  the source files.                                                **                                                                   **  LightningBoard is distributed in the hope that it will be useful,**  but without any warranty; without even the implied warranty of   **  merchantability or fitness for a particular purpose. See the GNU **  General Public License for more details.                         **                                                                   *\*******************************************************************/package liuxiaobo.lb.dao;import java.sql.*;import java.util.*;import liuxiaobo.db.*;import liuxiaobo.lb.*;import liuxiaobo.lb.bean.*;public class TopicDAO  {  private DBConnectionManager dbcm = DBConnectionManager.getInstance();  public TopicBean execute(int t_id)throws ActionException{    Connection connection=null;    try {      TopicBean topicBean=new TopicBean();      connection=dbcm.getConnection();      DBAccess dba=new DBAccess(connection);      String sql="SELECT t_f_id,f_name,f_info,f_u_id,u_name,f_topics,f_messages,t_name,t_replies,t_views FROM forum,topic,user  WHERE t_f_id=f_id AND f_u_id=u_id  AND t_id=" + t_id;      ResultSet rs=dba.openSelect(sql);      //check result      if (!rs.next())        return null;      rs.beforeFirst();      while (rs.next()){        topicBean.setF_id(rs.getString("t_f_id"));        topicBean.setF_name(rs.getString("f_name"));        topicBean.setF_info(rs.getString("f_info"));        topicBean.setF_u_id(rs.getString("f_u_id"));        topicBean.setU_name(rs.getString("u_name"));        topicBean.setF_topics(rs.getString("f_topics"));        topicBean.setF_messages(rs.getString("f_messages"));        topicBean.setT_id(String.valueOf(t_id));        topicBean.setT_name(rs.getString("t_name"));        topicBean.setT_replies(rs.getString("t_replies"));        topicBean.setT_views(rs.getString("t_views"));      }      rs.close();      dba.closeSelect();      //------------------------      sql="SELECT m_id,m_content,m_time,m_u_id,u_name,u_regtime,u_address,u_post,u_sign FROM message,user  WHERE m_u_id=u_id AND m_t_id=" + t_id + " ORDER BY m_time";      rs = dba.openSelect(sql);      //check result      if (!rs.next())        return null;      rs.beforeFirst();      List messageList=new LinkedList();      while(rs.next()){        Message message=new Message();        message.setM_id(rs.getString("m_id"));        message.setM_content(rs.getString("m_content"));        message.setM_time(rs.getString("m_time"));        message.setM_u_id(rs.getString("m_u_id"));        message.setU_name(rs.getString("u_name"));        message.setU_regtime(rs.getString("u_regtime"));        message.setU_address(rs.getString("u_address"));        message.setU_post(rs.getString("u_post"));        message.setU_sign(rs.getString("u_sign"));        messageList.add(message);      }      topicBean.setMessages(messageList);      rs.close();      dba.closeSelect();      //view      dba.runSql("UPDATE topic SET t_views=t_views+1 WHERE t_id="+t_id);      //jump      CommonDAO commonDAO=new CommonDAO();      topicBean.setForumMap(commonDAO.getForumMap(dba));      return topicBean;    } catch (Exception ex) {      throw new ActionException(ex);    }finally{      try {        dbcm.freeConnection(connection);      } catch (SQLException ex) {        //      }    }  }}