Hibernate实现DAO的常用CRUD操作

    package com.utstar.nms.vmm.spring.dao;

 

       import java.io.Serializable;

 

       import java.util.List;

 

       import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

 

       import com.utstar.nms.vmm.spring.util.GenericsUtils;

 

        public class HibernateEntityDao extends HibernateDaoSupport

 

               implements EntityDao {

 

           protected Class entityClass;

           public HibernateEntityDao() {

               entityClass = GenericsUtils.getSuperClassGenricType(getClass());

           }

           /**

            * find an object by its id

            * @param id

            * @return an object

            */

           public T findByID(Serializable id) {

               return (T) getHibernateTemplate().get(entityClass, id);

           }

           /**

            * @return find all objects

            */

           public List findAll()

           {

               return getHibernateTemplate().loadAll(entityClass);

           }

           /**

            * find objects  by sql(jdbc) or hql(hibernate)

            * @param ql

            * @param values parameter that

            * @return an objects list of the query result

            */

           public List findByQL(String hql, Object... values)

           {

               return getHibernateTemplate().find(hql, values);

           }

           /**

            * save the object input

            * @param o

            */

 

 

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