hql and sql in hbm.xml

在hibernate中，SQL允许写在配置文件里，下面两个例子分别为HQL和SQL,从多个对象或表中取得一个对象：

 

HQL：

 

<query name="PermissionType.findAllProfilePermissionType">
        <query-param name="permissionTypeCodes" type="string"/>

        select pt 
        from PermissionType pt, ProfilePermissionType ppt
        where pt.code = ppt.permissionTypeCode
        and (:permissionTypeCodes is null
            or pt.code not in (:permissionTypeCodes))
       
    </query>

 

 

SQL：

 

 <sql-query name="AgentRef.getAgentRefByAgentID" cacheable="true"
            cache-region="/au/com/at2/objects/agentref/AgentRefIdByAgentId">
        <query-param name="agentId" type="integer"/>
        <return alias="AR2" class="au.com.at2.objects.agentref.AgentRef"/>

        SELECT {AR2.*}
        FROM AGENT_REF AR1, AGENT_REF AR2
        WHERE AR1.AgencyID = AR2.AgencyID
        AND AR1.AgentID = :agentId
        AND AR2.AgentID IS NULL
        AND AR2.DepartmentID IS NULL
    </sql-query>