buddysdaoimpl.java

论坛软件系统亦称电子公告板(BBS)系统

package cn.jsprun.dao.impl;

import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;

import cn.jsprun.dao.BuddysDao;
import cn.jsprun.domain.Buddys;
import cn.jsprun.utils.HibernateUtil;

public class BuddysDaoImpl implements BuddysDao {
	public boolean deleteBuddysByUid(int uid) {
		Session session = HibernateUtil.getSessionFactory().getCurrentSession();
		Transaction tr = null;
		try{
			tr = session.beginTransaction();
			Query query = session.createQuery("delete from Buddys as b where b.id.uid=?");
			query.setParameter(0, uid);
			query.executeUpdate();
			tr.commit();
			return true;
		}catch(HibernateException e){
			if(tr!=null){
				tr.rollback();
			}
			e.printStackTrace();
		}
		return false;
	}
	public List<Buddys> findBuddysByUid(int uid) {
		Session session = HibernateUtil.getSessionFactory().getCurrentSession();
		Transaction tr = null;
		try{
			tr = session.beginTransaction();
			Query query = session.createQuery("from Buddys as b where b.id.uid = ? ");
			query.setParameter(0, uid);
			List<Buddys> list = query.list();
			tr.commit();
			return list;
		}catch(HibernateException he){
			if(tr!=null){
				tr.rollback();
			}
			he.printStackTrace();
		}
		return null;
	}
	public boolean insertBuddys(Buddys buddy) {
		Session session = HibernateUtil.getSessionFactory().getCurrentSession();
		Transaction tr = null;
		try{
			tr = session.beginTransaction();
			session.save(buddy);
			tr.commit();
			return true;
		}catch(HibernateException he){
			if(tr!=null){
				tr.rollback();
			}
			he.printStackTrace();
		}
		return false;
	}

}