Hibernate 学习笔记第四篇

Hibernate 查询语言之HQL

  命名查询：

 

<!-- 类似于iBatis 中的以key 找value  -->

<query name="findDept" >

     <![CDATA[from  Department d where d.id=:OID ]]>

</query>

 

@Test

public void testSave(){

 

 Session session = sessionFactory.openSession();

 Transaction tran = session.beginTransaction();

    tran.begin();

    Department dep = (Department) session.getNamedQuery("findDept").setLong("OID",Long.valueOf(1)).uniqueResult();

   System.out.println(dep.getName());

 

session.close();

 

}

一定要加上uniqueResult();

 

Hibernate: 

    select

        department0_.id as id0_,

        department0_.name as name0_,

        department0_.description as descript3_0_ 

    from

        dept department0_ 

    where

        department0_.id=?

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