userdaoimpl.java

达内Java培训实训项目ECPORT原码。 包括逐步优化的四个版本： 简单工厂模式实现 简单Spring-IoC实现 Spring声明式事务实现 Spring-AOP集成

package com.royee.ecport.dao.impl;

import java.util.List;

import org.hibernate.Query;

import com.royee.ecport.dao.UserDao;
import com.royee.ecport.pojo.EntityBase;
import com.royee.ecport.pojo.User;

public class UserDaoImpl extends DaoBase<User> implements UserDao {

	public Class<? extends EntityBase> getPojoType() {
		// TODO Auto-generated method stub
		return User.class;
	}

	public void deleteByUsername(String username) {
		// TODO Auto-generated method stub
		execute("delete from User where username=?",username);
	}

	public User getByUserName(String username) {
		// TODO Auto-generated method stub
		List<User> users=findByHQL("from User where username=?",username,0,1);
		if(users.size()==0)
			return null;
		else
			return users.get(0);
	}

	public boolean isExist(String username, String password) {
		// TODO Auto-generated method stub
		Query q=getCurrentSession().createQuery("select count(user) from User as user where user.username=? and user.password=?");
		q.setParameter(0, username);
		q.setParameter(1, password);
		return !((Long) q.list().get(0)).equals(0L);
	}

}