deletepoll.java

一个关于商业的网站

package com.everstar.poll;

/**
 * Title:        webstar
 * Description:  this is the webstar project
 * $ Modified Record:
 * $2003.4.6: Created.
 * Copyright (C) 2003 www.studyjava.com All rights reserved.
 * @version 1.0
 */
import java.util.*;
import java.sql.*;
import java.io.*;

import javax.servlet.*;
import javax.servlet.http.*;
import com.everstar.database.*;

public class DeletePoll {
  private int pollId = 0;
  private Database dbConn = null;  //database connection
  private String error = null;
  private String nextURL = null;

  public void setPollId(int newPollId) { pollId = newPollId;}
  public int getPollId() { return pollId;}

  public Database getDbConn() { return(dbConn); }
  public void   setDbConn(Database newDbConn) { dbConn = newDbConn; }

  public void setError(String newError) { error = newError;}
  public String getError() { return error;}

  public String getNextURL() { return((nextURL != null) ? nextURL : ""); }
  public void setNextURL(String nextURL_) { nextURL = nextURL_; }

  public void init() throws ServletException {
    if (dbConn == null) error = "No Database Connection";
    if (pollId <= 0) error = "No Poll Id";
   try{
       String sql = "delete from themeinfo where themeNo =" + pollId;
       dbConn.delete(sql);
       sql = "delete from themeopinion where themeNo =" + pollId;
       dbConn.delete(sql);
     // request.getRequestDispatcher(response.encodeURL(getNextURL())).forward(request, response);
     }catch(Exception e) {
          error = "SQL Error!";
      }
  }

  public DeletePoll() {
  }
}