booklogic.java~3~

图书借阅系统

package com.lib.logic;

import com.lib.dao.HbmDAO;
import com.lib.actionform.BookActionForm;
import java.util.List;

public class BookLogic {
  private HbmDAO dao;
    private BookActionForm form;
    public BookLogic() {
        dao = new HbmDAO();
        dao.setAutoClose(false);
    }
    public void getBooks()
    {
      String str = "from Book";
      List users = dao.list(str);
      form.setUsers(users);
  }
  public void initReaders()
     {
       ArrayList  ps =  new ArrayList();
       String str = "from Reader";
        List readers = dao.list(str);
        for (Iterator iter = readers.iterator(); iter.hasNext(); ) {
          Reader item = (Reader)iter.next();
          Pair p = new Pair();
          p.setTypeName(item.getReaderName());
          p.setTypeUID(item.getReaderUID());
          ps.add(p);
        }
        form.setReaders(ps);
     }

  public void addUser()
  {
     User user = new User();
     List readers = dao.list("from Reader");
     if(readers.size()>0)
     {
        Reader reader = (Reader)readers.get(0);
        user.setReaderUID(reader.getReaderUID());
        user.setUserName("");
        user.setPassWord("****");
        user.setUserType(new Integer(1));
        user.setUserUID(null);
        form.getUsers().add(user);
      }

  }
  public void saveUser()
  {
    List users = form.getUsers();
    for (Iterator iter = users.iterator(); iter.hasNext(); ) {
      User item = (User)iter.next();
      if(item.getUserUID().equals(new Long(0)))
      {
        item.setUserUID(null);
      }
      try {
        dao.store(item);
      }
      catch (DAOException ex) {
        ex.printStackTrace();
      }
    }
  }
  public void deleteUser()
  {
    Long uid = form.getDeleteUID();
    try {
      dao.remove(User.class, uid);
    }
    catch (DAOException ex) {
      ex.printStackTrace();
    }
  }

    public void closeDAO()
    {
      dao.closeSession();
    }


}