Entity inheritance with exposed repositories: How to merge keys on abstract collection resource

Question

Using Spring Boot 2 with Spring Data Rest.

Given the following entity tree where all classes have an exposed repository (required):

abstract class Fruit;
class Apple extends Fruit;
class Lemon extends Fruit;

Calling the abstract collection resource /fruits returns Fruit objects each on its key named after the concretes classes names:

{
    _embedded: {
        apples: [0: , 1: ..],
        lemons: [0: , 1: ..]
    }
}

I would like for the abstract collection only to have fruits merged in a key named after the abstract class name:

{
    _embedded: {
        fruits: [0: , 1: ..],
    }
}

It works only if concrete classes repositories are not exposed. I need theses concretes class resources as well.

It tried to play with a RelProvider class for Fruit abstract class, but it changes the key name for concrete collection resources as well which i don't want to:

GET /apples:

{
    _embedded: {
        fruits: [0: , 1: ..],
    }
}

Here's what i want:

GET /fruits: 

{
    _embedded: {
        fruits: [0: , 1: ..],
    }
}

GET /apples:

{
    _embedded: {
        apples: [0: , 1: ..],
    }
}

GET /lemons:

{
    _embedded: {
        lemons: [0: , 1: ..],
    }
}

Try to make Fruit non-abstract and deny all requests to it except GET. — Selindek, Mar 01 '19 at 12:20
I can't, Fruit contains abstract methods and is conceptually an abstract class. — sgt-hartman, Mar 01 '19 at 13:02
Then do NOT export fruit at all and create a custom restcontroller for the GET requests. — Selindek, Mar 01 '19 at 15:25
I hoped there was a more straightforward solution which prevented me to completely disable Spring Data Rest for this repository but at least this is one. Thanks — sgt-hartman, Mar 05 '19 at 09:03

Entity inheritance with exposed repositories: How to merge keys on abstract collection resource

0 Answers0