[BUG] [java] wrong enum default value

[PaKu5]

Description

WIth openapi-generator version 7.12.0 there was a new feature to set a default value for enum values. This will end in a compile error for our code generation.

Version: 7.12.0

{
  "components": {
    "schemas": {
      "ContactMedium": {
        "properties": {
          "@type": {
            "type": "string",
            "description": "When sub-classing, this defines the sub-class entity name",
            "enum": [
              "EmailContactMedium",
              "PhoneContactMedium",
              "WebsiteContactMedium",
              "SocialNetworkContactMedium",
              "PostalAddressContactMedium",
              "BulkRecipientPostalAddressContactMedium",
              "PostboxContactMedium"
            ]
          }
        }
      }
    }
  }
}

<plugin>
                <groupId>org.openapitools</groupId>
                <artifactId>openapi-generator-maven-plugin</artifactId>
                <version>${openapi-generator-maven-plugin.version}</version>
                <executions>
                    <execution>
                        ....
                        <configuration>
                            <generatorName>jaxrs-spec</generatorName>
                            <configOptions>
                                <libary>quarkus</libary>
                                <enumPropertyNaming>legacy</enumPropertyNaming>
                                <ignoreAnyOfInEnum>true</ignoreAnyOfInEnum>
                                <useJakartaEe>true</useJakartaEe>
                                <generatePom>false</generatePom>
                                <interfaceOnly>true</interfaceOnly>
                                <returnResponse>true</returnResponse>
                                <containerDefaultToNull>true</containerDefaultToNull>
                            </configOptions>
                            <generateSupportingFiles>false</generateSupportingFiles>
                            <generateApiTests>false</generateApiTests>
                            <ignoreFileOverride>${project.basedir}/../.openapi-generator-ignore-quarkus</ignoreFileOverride>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

(same for spring - java)

This will generate the following line in class ContactMedium:

private AtTypeEnum atType = ContactMedium;

Wich will result in a Compile Error on class ContactMedium:

Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.14.0:compile (default-compile) on project tmf632-quarkus3: Compilation failure
[ERROR] .../ContactMedium.java:[130,31] Symbol nicht gefunden
[ERROR]   Symbol: Variable ContactMedium
[ERROR]   Ort: Klasse ....ContactMedium

[jpfinne]

@PaKu5 What do you mean by " there was a new feature to set a default value for enum values"?

When the default value is in the list of enumeration, DefaultCodegen uses toEnumDefaultValue()

    public String toEnumDefaultValue(String value, String datatype) {
        return datatype + "." + value;
    }

Otherwise the default value is used as is.

Have you set the default value to "default": "ContactMedium" ?

[PaKu5]

With version 7.11.0 there was no default value for the generated Code.
It was generated like:
private AtTypeEnum atType;

With version 7.12.0 the value "ContactMedium" was assigned and this will end in an compile error.

No I didn't set any default value for the property.