package com.pb.base.impl;

import java.lang.reflect.ParameterizedType;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.pb.base.dao.IBaseDao;
import com.pb.entity.Users;

public class BaseDaoImpl<T> extends HibernateDaoSupport implements IBaseDao<T> {
	private Log log = LogFactory.getLog(this.getClass());
	private SessionFactory sessionFactory;
	@SuppressWarnings("unchecked")
	public BaseDaoImpl() {
	}

	public void delete(T instances) {

	}

	public List<T> findAll() {
		return null;
	}

	@SuppressWarnings("unchecked")//返回数据库中对应该业务对象的所有记录的集合
	public List<Object> findAll(Class clazz) throws Exception {
		try {
			return getHibernateTemplate().loadAll(clazz);
		} catch (Exception e) {
			 throw new Exception("加载所有 " + clazz.getName() + " 实例时失败", e);    
		}
		
	}

	public List findByHql(String hql) {

		return null;
	}

	public Object findById(Class clazz, Integer id) {
		return null;
	}

	@SuppressWarnings("unchecked")
	public List<T> findByProperty(String className, String propertyName,
			Object value) {
		log.debug("finding " + className + " instance with property: "
				+ propertyName + ", value: " + value);
		

		try {
			String hql = "FROM " + className + " as o WHERE o." + propertyName
					+ " = " + "'" + value + "'";

			System.out.println(hql);

			 List list= super.getHibernateTemplate().find(hql);
			
			 return list;
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}


	@SuppressWarnings("unchecked")
	public List<Users> queryUserList() {
		log.debug("finding Users");

		try {
			String hql = "FROM Users";
			return super.getHibernateTemplate().find(hql);

		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}

	}
}