Wrong type when using @JsonValue with JacksonOption.FLATTENED_ENUMS_FROM_JSONVALUE

[LukasBroetje]

Hi,

currently a wrong type is set, when using the JacksonOption.FLATTENED_ENUMS_FROM_JSONVALUE in combination with an enum to get a constant with a specific type. The type is string but the getter annotated with @JsonValue is from type Integer. I expected that the type would be from type Integer:

The Enum:

public enum VersionTwo {

    VERSION_TWO(2);

    private final Integer value;

    VersionTwo(Integer value) {

        this.value = value;
    }

    @JsonValue
    public Integer getValue() {

        return value;
    }
}

Usage of Enum in Class

    @NotNull
    @JsonProperty(value = "VERSION")
    private VersionTwo version;

The generated Json:

...
"VERSION" : {
      "type" : "string",
      "const" : 2
    }
...

The expected generated Json:

...
"VERSION" : {
      "type" : "integer",
      "const" : 2
    }
...

Configuration:

JacksonModule moduleJackson =
                new JacksonModule(
                        JacksonOption.RESPECT_JSONPROPERTY_ORDER,
                        JacksonOption.RESPECT_JSONPROPERTY_REQUIRED,
                        JacksonOption.FLATTENED_ENUMS_FROM_JSONVALUE);
        JakartaValidationModule moduleJavax =
                new JakartaValidationModule(
                        JakartaValidationOption.NOT_NULLABLE_FIELD_IS_REQUIRED,
                        JakartaValidationOption.INCLUDE_PATTERN_EXPRESSIONS);

        SchemaGeneratorConfigBuilder configBuilder =
                new SchemaGeneratorConfigBuilder(
                        SchemaVersion.DRAFT_2019_09,
                        OptionPreset.PLAIN_JSON)
                        .with(moduleJavax)
                        .with(moduleJackson);