[Spring-java] required readonly attribute generate not null field

Created by: esoni88

Hi All, regard required, readOnly and writeOnly open api specification report:

If a readOnly or writeOnly property is included in the required list, required affects just the relevant scope – responses only or requests only. That is, read-only required properties apply to responses only, and write-only required properties – to requests only.

so if i declare a field required and read-only means that in the request that field should be empty.

example with this yam:

Poll:
  title: Poll
  type: object
  description: A poll is an election, or a survey of people's opinions to ask inside the platform
  properties:
    id:
      type: integer
      format: int64
      readOnly: true
      description: Unique Identifier of a Poll

---

openapigenerator generate the class with id not null

@JsonProperty("id") private Long id;

@NotNull public Long getId() { return id; }

public void setId(Long id) { this.id = id; }

What happen if i run my code and i perform a post with an empty id ? Spring raise bad request but it is not correct. For openapi specification read-only required properties apply to responses only and not for the request. I think that openapi generator should generate @NotNull only for writeOnly property