How to force Swagger Codegen to generate an enum which is not referenced from any other object?

Question

I have an OpenAPI spec with multiple enums:

SocialLinkType:
  type: string
  enum:
    - FACEBOOK
    - YOUTUBE
    - INSTAGRAM
    - TWITTER
    - PINTEREST
    - LINKEDIN
    - TIKTOK
    - TUMBLR
    - WHATSAPP
    - VIMEO
    - SNAPCHAT
    - APPLE
    - ANDROID

ColorType:
  type: string
  enum:
    - ACCENT_1
    - ACCENT_2
    - BACKGROUND_1
    - BACKGROUND_2
    - TEXT
    - SOLID_BUTTON
    - OUTLINE_BUTTON

The issue I'm facing is about ColorType. Unlike SocialLinkType it is not referenced from any other component described in OpenAPI spec. As a result ColorType Java enum is not generated, so my question is about forcing Swagger Codegen to generate Java code for every item in the spec.

Can this be achieved somehow?

Answer 1

Finally I've solved the issue by moving the declaration of ColorType into top-level components section. Prior to fix I had only securitySchemes declaration under the section:

components:
  securitySchemes:
    bearer:
      type: http
      scheme: bearer

I've changed it to

components:
  schemas:
    ColorType:
      type: string
      enum:
        - ACCENT_1
        - ACCENT_2
        - BACKGROUND_1
        - BACKGROUND_2
        - TEXT
        - SOLID_BUTTON
        - OUTLINE_BUTTON
  securitySchemes:
    bearer:
      type: http
      scheme: bearer

This gave me desired Java enum among generated classes:

public enum ColorType {
  ACCENT_1("ACCENT_1"),
  ACCENT_2("ACCENT_2"),
  BACKGROUND_1("BACKGROUND_1"),
  BACKGROUND_2("BACKGROUND_2"),
  TEXT("TEXT"), 
  SOLID_BUTTON("SOLID_BUTTON"),
  OUTLINE_BUTTON("OUTLINE_BUTTON");

  private String value;

  ColorType(String value) {
    this.value = value;
  }

  @Override
  @JsonValue
  public String toString() {
    return String.valueOf(value);
  }

  @JsonCreator
  public static ColorType fromValue(String value) {
    for (ColorType b : ColorType.values()) {
      if (b.value.equals(value)) {
        return b;
      }
    }
    throw new IllegalArgumentException("Unexpected value '" + value + "'");
  }
}