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DAO设计：
已经设计好数据实体以及关联关系了，接下来DAO层的编码，这部分没什么东西，可以直接无视
HibernateUtil：
package org.taomujian.db;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;public class HibernateUtil {private static final SessionFactory sessionFactory = buildSessionFactory();private static SessionFactory buildSessionFactory() {try {// Create the SessionFactory from hibernate.cfg.xmlreturn new Configuration().configure().buildSessionFactory();}catch (Throwable ex) {// Make sure you log the exception, as it might be swallowedSystem.err.println("Initial SessionFactory creation failed." + ex);throw new ExceptionInInitializerError(ex);}}public static SessionFactory getSessionFactory() {return sessionFactory;}}OrgDAO：
package org.taomujian.dao;import org.hibernate.Session;
import org.taomujian.db.HibernateUtil;
import org.taomujian.model.Org;public class OrgDAO{public void saveOrg(Org org){if(null==org) return ;Session session = HibernateUtil.getSessionFactory().getCurrentSession();session.beginTransaction();session.persist(org);session.getTransaction().commit();}public void delOrg(Org org){Session session = HibernateUtil.getSessionFactory().getCurrentSession();session.beginTransaction();session.delete(org);session.getTransaction().commit();}public void mergeOrg(Org org){if(null==org) return ;Session session = HibernateUtil.getSessionFactory().getCurrentSession();session.beginTransaction();session.merge(org);session.getTransaction().commit();}public Org getOrg(String id){Session session = HibernateUtil.getSessionFactory().getCurrentSession();session.beginTransaction();Org org = (Org)session.get(Org.class, id);session.getTransaction().commit();return org;}
}
RoleDAO:
package org.taomujian.dao;import org.hibernate.Session;
import org.taomujian.db.HibernateUtil;
import org.taomujian.model.Role;public class RoleDAO {/*** 保存role记录，可以只单独保存role，也可以完整的保存role以及org和级联关系* * @param role*/public void saveRole(Role role){if(null==role) return ;Session session = HibernateUtil.getSessionFactory().getCurrentSession();session.beginTransaction();session.persist(role);session.getTransaction().commit();}public void mergeRole(Role role){if(null==role) return ;Session session = HibernateUtil.getSessionFactory().getCurrentSession();session.beginTransaction();session.merge(role);session.getTransaction().commit();}/*** 根据角色的ID获取一条role数据* @param id* @return*/public Role getRole(String id){Session session = HibernateUtil.getSessionFactory().getCurrentSession();session.beginTransaction();Role role = (Role)session.get(Role.class, id);System.out.println(role.getOrgList());session.getTransaction().commit();return role;}/*** 删除角色:* @param id*/public void removeRole(Role role){Session session = HibernateUtil.getSessionFactory().getCurrentSession(); session.beginTransaction(); session.delete(role);session.getTransaction().commit(); }}
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