Spring Data Rest: Collection models generated with non-HAL content

[mathias-ewald]

Describe the bug
The the api-docs CollectionModels are generally rendered as containing non-HAL enities while Spring Data Rest returns entities in HAL format.

To Reproduce

• Spring Boot 2.4.3
• Springdocs 1.5.4 (springdoc-openapi-ui, springdoc-openapi-data-rest)

Example Entity

@Data
@Entity
@NoArgsConstructor
@AllArgsConstructor
@EqualsAndHashCode(callSuper = false)
@Builder
public class Clinic extends BaseEntity {
	@NotNull
	@NotBlank
	private String name;

	@ElementCollection
	@Size(min = 1)
	private Set<Address> addresses;
}

Example Repo

public interface ClinicRepo extends CrudRepository<Clinic, UUID> {
}

Generated api-doc for GET /clinics:

...
paths:
  /clinics:
    get:
      tags:
      - clinic
      description: get-clinic
      operationId: getCollectionResource-clinic-get_1
      responses:
        "200":
          description: OK
          content:
            application/hal+json:
              schema:
                $ref: '#/components/schemas/CollectionModelClinic'
            application/x-spring-data-compact+json:
              schema:
                $ref: '#/components/schemas/CollectionModelClinic'
            text/uri-list:
              schema:
                $ref: '#/components/schemas/CollectionModelClinic'
...
components:
  schemas:
    CollectionModelClinic:
      type: object
      properties:
        _embedded:
          type: object
          properties:
            clinics:
              type: array
              items:
                $ref: '#/components/schemas/Clinic'
        _links:
          $ref: '#/components/schemas/Links'
    Clinic:
      required:
      - name
      type: object
      properties:
        name:
          type: string
        addresses:
          maxItems: 2147483647
          minItems: 1
          uniqueItems: true
          type: array
          items:
            $ref: '#/components/schemas/Address'

CollectionModelClinic has an array of Clinic (which mentions to _links property, for example) but Spring Data Rest returns:

{
  "_embedded" : {
    "clinics" : [ {
      "name" : "Animal Hospital Vienna Meidling",
      "addresses" : [ {
        "street" : "Längenfeldgasse",
        "number" : "16",
        "zipcode" : "1120",
        "city" : "Wien",
        "country" : "Austria"
      } ],
      "_links" : {
        "self" : {
          "href" : "http://localhost:8081/clinics/b98089ac-769f-42fa-84c1-a2106fa6cf3a"
        },
        "clinic" : {
          "href" : "http://localhost:8081/clinics/b98089ac-769f-42fa-84c1-a2106fa6cf3a"
        }
      }
    }, {
      "name" : "Animal Clinic & Animal Healing Center Aspern",
      "addresses" : [ {
        "street" : "Aspernstraße",
        "number" : "130",
        "zipcode" : "1120",
        "city" : "Wien",
        "country" : "Austria"
      } ],
      "_links" : {
        "self" : {
          "href" : "http://localhost:8081/clinics/b2bdd818-8758-4b42-8537-5bc2108e2027"
        },
        "clinic" : {
          "href" : "http://localhost:8081/clinics/b2bdd818-8758-4b42-8537-5bc2108e2027"
        }
      }
    } ]
  },
  "_links" : {
    "self" : {
      "href" : "http://localhost:8081/clinics"
    },
    "profile" : {
      "href" : "http://localhost:8081/profile/clinics"
    }
  }
}

Expected behavior
I would expect the api-doc to generate a response schema that matches the response returned by Spring Data Rest including the _links property.