administratordaoimpl.java

用户管理系统:用户登录,用户注册,用户修改,用户删除等等功能

package com.allan.ums.dao.impl;

import java.util.Iterator;
import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;

import com.allan.ums.dao.AdministratorDao;
import com.allan.ums.entity.Administrator;
import com.allan.ums.util.HibernateCallback;
import com.allan.ums.util.HibernateDao;

public class AdministratorDaoImpl extends HibernateDao implements
		AdministratorDao {
	@Override
	public Administrator select(final String username, final String password) {
		return (Administrator) hibernateTemplate
				.execute(new HibernateCallback() {
					@Override
					public Object execute(Session session) {
						String hql = "select ad from Administrator ad ";
						hql += " where ad.username=:username ";
						hql += " and ad.password=:password";
						Query query = session.createQuery(hql);
						query.setString("username", username);
						query.setString("password", password);
						List admins = query.list();
						Iterator iter = admins.iterator();
						if (iter.hasNext()) {
							return iter.next();
						}
						return null;
					}
				});
	}

}