l have a table without a Primary Key or Unique Key column. I need to manipulate this table from the Spring application by using JPA and Hibernate. While I was trying to map this table’s entity, it fails because there’s no @Id mapping. I tried to make a composite id from all the entity properties to ensure uniqueness, but in
Tag: entity
Strange exception when mapping two columns in a table to the same column in another table
There are two entities: and when i create repository with custom query the exception is thrown but if i remove the second referencing column from the query the program starts without exceptions. Moreover, if i use standart query method bookRepository.findAll(): all works fine Books: Book{id=3, name=’Test book’, author=Person{id=1, name=’Person A’}, reviewer=Person{id=2, name=’Person B’}} Book{id=4, name=’Test book’, author=Person{id=2, name=’Person B’}, reviewer=Person{id=1,
JPA Hibernate Annotation Issue
I have three Entities i’m modeling and am having issues with the associated annotations. I basically have a class that I intend on returning to the caller, a nested listed of Project’s and the Project …
Should Enterprise Java entities be dumb?
In our legacy Java EE application, there are loads of value object (VO) classes which typically contain only getters and setters, maybe equals() and hashCode(). These are (typically) the entities to …