創建選擇JPQL查詢拋出異常

Question

我有兩個對象

Person(long id, String name, PersonInfo info) 

和

PersonInfo(long id, String email, String lastname, in age) 

現在我嘗試創建一個javax.persistence.Query

我嘗試創建select to person where personinfo.email="somemail"

我嘗試

String queryString="select Person from Person p where p.PersonInfo._email='somemail'"; 
Query query=emf.createQuery(queryString); 
List resultList = query.getResultList(); 

，但我得到這個異常：

java.lang.IllegalArgumentException: org.hibernate.QueryException: could not resolve property: PersonInfo of: Entities.Person [select Person from Entities.Person p where p.PersonInfo._email='somemail'] [Ljava.lang.StackTraceElement;@748e6591 

什麼，我東錯了嗎？

Answer 1

什麼下列查詢字符串：

String queryString="select p from Person p where p.personInfo.email='somemail'";