How to define alias in OpenApi, eventually using it in Pojo - swagger

Question

Let's assume I have this definition in my openapi.yml (this is just a madeup example to depict the issue I have):
components:
schemas:
Address:
type: object
properties:
name:
type: string
zip:
type: integer
format: int64
town:
type: string
This will lead to the generation of code for the model that looks like this:
public class Address {
#JsonProperty("name")
private String name = null;
#JsonProperty("zip")
private Long zip = null;
#JsonProperty("town")
private String town = null;
...
My issue is that I have to persist this Pojo in a database and there exists no table Address (let's assume it is called Places instead) and the column for the zipcode is called zipcode instead of zip.
So I would need two things:
a way to tell OpenAPI about the aliases Address=Places and zip=zipcode.
a way to make this information change the code created. For Hibernate for example this would mean to add #Table(name="Places") and #Column(name="zipcode") in the right places.
Important remark: I can not change the API, it is expected to stick to Address and zip.
Can this be done ? I checked the specs and both swagger-codegen and openapi-generator (I'ld prefer the latter) but found no sign that something like this is covered.
For openapi-generator I had a look at the Mustache templates and as far as I can tell there is no code that refers any "alias information" that was defined in the yaml file.
Do I have to go the hard way and define an OpenAPI extension like this or this plus customize the templates all by myself ?
The closest I could find is this existing extension, that defines one type of alias. But this satisfies only the first part of my demand.

Answer 1

Use $ref
components:
schemas:
Address:
type: object
properties:
name:
type: string
zip:
type: integer
format: int64
town:
type: string
Places:
$ref: '#/components/schemas/Address'