bookmanager.java

jdo开发实例,一个功能全面的oa系统

package com.gzrealmap.oa.book.business;

/**
 * <p>Title: RealOA</p>
 * <p>Description: RealOA</p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: gzrealmap.com</p>
 * @author not attributable
 * @version 1.0
 */
import com.gzrealmap.oa.book.*;
import com.gzrealmap.lib.hibernate.HibernateUtil;
import java.io.*;
import java.util.*;

public class BookManager {
  public BookManager() {
  }
    public static void addBook(BookBean newBook) throws Exception {
      HibernateUtil theHibernateUtil = HibernateUtil.getInstance();
      theHibernateUtil.create2Db(newBook);
    }

    public static BookBean findBook(Integer obj) throws Exception {
      HibernateUtil theHibernateUtil = HibernateUtil.getInstance();
      return (BookBean) theHibernateUtil.findByPrimaryKey(BookBean.class,
          obj);
    }

    public static void updateBook(BookBean theUpdateBook) throws
        Exception {
      HibernateUtil theHibernateUtil = HibernateUtil.getInstance();
      theHibernateUtil.update2Db(theUpdateBook);
    }

    public static void removeBook(BookBean theRemoveBook) throws
      Exception {
    HibernateUtil theHibernateUtil = HibernateUtil.getInstance();
    theHibernateUtil.remove4Db(theRemoveBook);
  }

  /**
   * 增加一个event
   */
 public static void addBookLend(BookLendBean newBookLend) throws Exception {
   HibernateUtil theHibernateUtil = HibernateUtil.getInstance();
   theHibernateUtil.create2Db(newBookLend);
 }
   public static void addBookLend2Book(BookBean theOneInDataBase, BookLendBean theNewMany) throws Exception {
     theOneInDataBase.addBookLend(theNewMany);
     theNewMany.setLoginID(theOneInDataBase);
     addBookLend(theNewMany);
     updateBook(theOneInDataBase);
    }

  /*public static void addBookLend2Book(BookBean theOneInDataBase, BookLendBean theNewMany) throws Exception {
   theOneInDataBase.addBookLend(theNewMany);
   theNewMany.setBook(theOneInDataBase);
   addBookLend(theNewMany);
   updateCalendar(theOneInDataBase);
  }*/


   /**public static void main(String[] args) throws Exception{
    HibernateUtil theHibernateUtil = HibernateUtil.getInstance();
    Session session = theHibernateUtil.connect();
   Transaction tran = null;
    try {
      tran = session.beginTransaction();
      BookBean newBook = new BookBean();
      newBook.setLoginID(11);
      newBook.setName("bb");
      session.save(newBook);
      BookLendBean theLendBean = new BookLendBean();
      theLendBean.setBookLendID(66);
      theLendBean.setUserID(77);
      theLendBean.setLoginID(newBook);
      newBook.addBookLend(theLendBean);
      session.save(theLendBean);
      tran.commit();
    }
    catch (HibernateException ex) {
      tran.rollback();
    }
    session.close();
    System.out.println("ok");
    }
    */
}