Form.java

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import java.io.PrintWriter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.Connection;
import java.sql.SQLException;

public class Form
{
  public String name;
  public int method;
  
  public HttpServletRequest     req;
        public HttpServletResponse      res;
        public PrintWriter pw;
        public ConnectionFactory cf;
        public Connection conn;
        
        public Form(HttpServletRequest req, HttpServletResponse res, PrintWriter pw, ConnectionFactory cf)
        {
          this.req = req;
          this.res = res;
          this.pw = pw;
          this.cf = cf;
        }
        
        public Connection connectDb()
  {
    try
    {
      if (conn == null) conn = cf.connect();
    }
    catch (SQLException e)
    {
      Widget.ShowException(e,pw);
    }
    catch (ClassNotFoundException e)
    {
      Widget.ShowException(e,pw);
    }
    return conn; // convenience
  }
  
  public void disconnectDb()
  {
    try
    {
      cf.disconnect(conn);
      conn = null;
    }
    catch (SQLException e)
    {
      Widget.ShowException(e,pw);
    }
  }
};

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