[BUG][Kotlin] Enum with Int values generated to hold String

openapi-generator version

6.3.0

Source json

"typeIDs": {
          "description": "Ids",
          "type": "array",
          "items": {
            "format": "int32",
            "type": "integer",
            "enum": [
              0,
              7,
              8,
              9,
              10,
              11,
              12,
              13,
              14,
              15,
              16,
              19,
              -98
            ]
          }
        }

Generation code

enum class TypeIDs(val value: kotlin.String) {
        @Json(name = "0") _0(0),
        @Json(name = "7") _7(7),
        @Json(name = "8") _8(8),
        @Json(name = "9") _9(9),
        @Json(name = "10") _10(10),
        @Json(name = "11") _11(11),
        @Json(name = "12") _12(12),
        @Json(name = "13") _13(13),
        @Json(name = "14") _14(14),
        @Json(name = "15") _15(15),
        @Json(name = "16") _16(16),
        @Json(name = "19") _19(19),
        @Json(name = "-98") MINUS98(-98);
    }

Generated code has type String in the declaration (enum class TypeIDs(val value: kotlin.String)), however every entry is populated with an Int value (ex. _0(0), and not _0("0")), which results into a compilation error.

Any workaround for this? Or any expectation if this will be fixed?

This also can be reproduced with this openapi file: https://api-docs.jrni.com/v5/swagger/admin.json

(also with openapi-generator 7.2.0 version)

Still happening with 7.5.0

Still happening with 7.9.0

yes, still alive on 7.12.0
Example:

      target_access_levels:
        type: array
        description: Target user roles
        items:
          type: integer
          format: int32
          enum:
          - 10
          - 15
          - 20
          - 30
          - 40
          - 50

in https://gitlab.com/gitlab-org/gitlab/-/raw/master/doc/api/openapi/openapi_v2.yaml

by using

openApiGenerate {
    generatorName.set("kotlin")
    library.set("jvm-ktor")

    skipValidateSpec.set(true)

    configOptions.putAll(
        mapOf(
            "dateLibrary" to "kotlinx-datetime",
            "serializationLibrary" to "kotlinx_serialization",
            "useCoroutines" to "true",
        )
    )
}

I opened a PR with the fix: #22324

Navigation Menu

Repository navigation

[BUG][Kotlin] Enum with Int values generated to hold String #15204

openapi-generator version

Source json

Generation code

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

[BUG][Kotlin] Enum with Int values generated to hold String #15204

Description

openapi-generator version

Source json

Generation code

Activity

noulis commented on Jul 6, 2023

ctamisier commented on Jan 18, 2024

Aschraf commented on May 16, 2024

takkiraz commented on Nov 3, 2024

childnode commented on Mar 13, 2025

exviva commented on Nov 10, 2025

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions