我正在尝试执行以下查询:
returnValue = (Long) super.createQuery("Select Count(*) From User u Left Outer Join u.rolesRelated r "
+ "Where r.role.id = :roleId And u.id = :userId")
.setParameter("userId", userId)
.setParameter("roleId", roleId)
.getSingleResult();
但我收到此错误:
org.hibernate.QueryException: could not resolve property: role.id of: com.sp.common.core.model.User
此属性不存在,因为 role.id 位于 user.rolesRelated 中,而不是 user 中。这是我的 hibernate 映射:
<class name="com.sp.common.core.model.User" table="user">
/* more meaningless properties */
<set cascade="all" name="rolesRelated" sort="unsorted" table="sec_rperfil_usuario"
lazy="false" fetch="join">
<key column="id_usuario" />
<composite-element class="com.sp.common.core.model.UserRole">
<many-to-one name="role" class="com.sp.common.core.model.Role"
column="id_perfil" cascade="none" lazy="false" fetch="join" />
</composite-element>
</set>
</class>
有人知道这里出了什么问题吗?
提前致谢
最佳答案
尝试对角色进行另一次显式联接。
SELECT COUNT(*) FROM User u LEFT OUTER JOIN u.rolesRelated rr
LEFT OUTER JOIN rr.role r WHERE r.id = :roleId And u.id = :userId
关于java - HQL 查询从错误的类中获取属性,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/42490147/