studentlogic.java

选课系统,分为学生和管理员两部分,功能还比较全,不过没有数据库

package com.student.logic;

import com.student.dao.HbmDAO;
import com.student.actionform.StudentActionForm;
import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;
import com.student.vo.BaseInfo;
import com.student.assistvo.AssistVo;
import com.student.vo.User;
import com.student.dao.DAOException;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class StudentLogic {
  private HbmDAO dao;
  private StudentActionForm form;
  public StudentLogic(StudentActionForm form) {
    dao = new HbmDAO();
    dao.setAutoClose(false);
    this.form = form;
  }
  public void getStudents()
  {
      String str = "from BaseInfo";
      List students = dao.list(str);
      form.setStudents(students);
  }

  public void addStudent()
  {
      BaseInfo student = new BaseInfo();
      student.setStudentUID(null);
      student.setStudentAge(new Integer(20));
      student.setStudentClass("350761");
      student.setStudentCode("35076108");
      student.setStudentGender("male");
      student.setStudentName("Mike");
      form.getStudents().add(student);

  }
  public void saveStudent()
  {
        List students = form.getStudents();
        for (Iterator iter = students.iterator(); iter.hasNext(); ) {
          BaseInfo item = (BaseInfo)iter.next();
          if(item.getStudentUID().equals(new Long(0)))
          {
            item.setStudentUID(null);
          }
          try {
            dao.store(item);
          }
          catch (DAOException ex) {
            ex.printStackTrace();
          }
        }
  }
  public void deleteStudent()
  {

    Long uid = form.getDeleteUID();
        String str = "select user from User user where studentUID=" + uid.toString();
        try {
        List users = dao.list(str);
        for(int i=0;i< users.size();i++)
        {
          if(!((User)users.get(i)).getUserName().equals("admin"))
          {
            dao.remove( (User) users.get(i));
          }
          else
          {
            User user = ((User)users.get(i));
            user.setStudentUID(null);
            dao.store(user);
          }
        }
        dao.remove(BaseInfo.class, uid);
        }
        catch (DAOException ex) {
          ex.printStackTrace();
        }
  }
   public void closeDAO()
   {
         dao.closeSession();
         dao = null;
  }


}