[英]Using Hibernate Criteria set Projection field as Foreign key column in the hibernate
如何在休眠条件查询中将投影字段设置为外键参考。示例如下,
Criteria crt = s.createCriteria(UsersforGrades.class).createCriteria("id", "id1").createCriteria("id1.userId", "id2").add(Restrictions.eq("id2.userId", ue.getUserId()));
ProjectionList proList = Projections.projectionList();
proList.add(Projections.property("gradeId.gradeId"));
例外:
org.hibernate.QueryException: could not resolve property: gradeId of: com.treamis.entity.UserEntity
较晚的答案是:(跟上相同的情况)
在这种情况下,您需要创建别名。
criteria.createAlias("gradeId", "gradeId");
criteria.setProjection(Projections.property("gradeId.gradeId"));
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.