JPA如何获取某些字段而不是所有字段 [英] JPA how to get some fields not all fields

问题描述

我有主表和明细表
1- master -Employee(id int主键，名称varchar2，address_Id int外键)
2-详细信息-地址(id int主键，块varchar2，建筑物varchar2，区域varchar2)

I have Master table and Details table
1- master -Employee(id int primary Key, name varchar2, address_Id int foreign key)
2- details- Address(id int primary key, block varchar2, building varchar2, area varchar2)

我使用JPA来获取对象，我想要一些字段，而不是全部，我想要 (Employee.id，Employee.name，Address.area)仅
所以我如何在不获取所有字段的情况下做到这一点? 谢谢.

I use the JPA to get the Object and i want some fields not all, i want (Employee.id, Employee.name, Address.area) only
so how can i do this without get all fields??
thanks.

推荐答案

我知道有些晚了，但是仍然想回答，以防有人可能也会遇到此问题:您是否考虑过尝试获取诸如lazy和渴望的?有了这些，您可能会得到所有直接标记为渴望"的字段，而懒惰"字段则被提取

I know it is a little bit late, but still wanted to answer in case someone may also face this problem: have you considered to try fetch types like lazy and eager? With these you may get all the fields that are just marked as "eager" directly, "lazy" fields are fetched

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