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.HashMap;
import java.util.List;
import java.util.Map;

import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Restrictions;
import org.springframework.orm.hibernate3.HibernateTemplate;

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

public class UserDaoImpl extends DaoBase<User> implements UserDao {

	@Override
	protected Class<User> getPojoType() {
		// TODO Auto-generated method stub
		return User.class;
	}

	public void deleteByUsername(String username) {
		// TODO Auto-generated method stub
		HibernateTemplate ht = this.getHibernateTemplate();
		User u = (User) ht.findByCriteria(
				DetachedCriteria.forClass(getPojoType()).add(
						Restrictions.eq("username", username))).get(0);
		ht.delete(u);

	}

	@SuppressWarnings("unchecked")
	public User getByUserName(String username) {
		// TODO Auto-generated method stub
		List<User> ret= this.getHibernateTemplate().findByCriteria(
				DetachedCriteria.forClass(getPojoType()).add(
						Restrictions.eq("username", username)));
		if(ret.size()==0)
			return null;
		return ret.get(0);
	}

	public boolean isExist(String username, String password) {
		// TODO Auto-generated method stub
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("username", username);
		map.put("password", password);
		return this.getHibernateTemplate().findByCriteria(
				DetachedCriteria.forClass(getPojoType()).add(
						Restrictions.allEq(map))).size() != 0;
	}

}