用于映射属性的Hibernate Projection

Question

在Hibernate投影时：

 Criteria criteria = session.createCriteria(XYZ.class)
                    .add(Restrictions.eq("XYDId", 1)).add(Restrictions.eq("active", Boolean.TRUE));
criteria.setProjection(Projections.property("abc.id").as("id"));
            criteria.setProjection(Projections.property("abc.timezoneKey").as("TIMEZONEKEY"));
            criteria.setResultTransformer(Transformers.aliasToBean(abc.class));

抛出异常

could not resolve property: abc.timezoneKey of: com.locaid.gfe.common.entities.XYZ

虽然在XYZ实体中，abc作为proerty存在，而在abc timezoneKey作为属性存在。任何人都可以帮助我获得我所缺乏的东西。

Answer 1

您需要为alias属性

添加abc

Criteria criteria = session.createCriteria(XYZ.class, "xyz").createAlias("xyz.abc", "xabc").add(Restrictions.eq("xyz.XYDId", 1)).add(Restrictions.eq("xyz.active", Boolean.TRUE));
criteria.setProjection(Projections.property("xabc.id").as("id"));
criteria.setProjection(Projections.property("xabc.timezoneKey").as("TIMEZONEKEY"));
criteria.setResultTransformer(Transformers.aliasToBean(abc.class));

您还可以查看this。