[BUG] [JAVA] [Spring] - OneOf API-first Code Generation Not Working

[bnlcnd]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?

Description

• I know this issue might have been raised in the past few years for several times. I have a simple openapi spec with 1 GET point to return a OneOf type of response. The generated code does not compile.
• My spec is return a contact-info which is either a email or a telephoneNumber.
• The generated code for contact-info is referring a class named OneOftelephoneNumberemail. But that class is not generated. And the maven compile failed.
• the same problem also show up for anyOf definition.

openapi-generator version

I have tried many versions including the latest release 5.1.1 and the 5.2.0-SNAPSHOT. This error shows up on all the versions.

OpenAPI declaration file content or url

https://github.com/bnlcnd/poc-anyof-oneof/blob/main/anyof-oneof.yaml

Generation Details

the POM file can be found here
https://github.com/bnlcnd/poc-anyof-oneof/blob/main/pom.xml

Steps to reproduce

• git clone the repository https://github.com/bnlcnd/poc-anyof-oneof
• run the command under the root folder of the repo :

mvn clean package

Suggest a fix

This issue seems lingering around for several years. Maybe it's time to fix it for both oneOf and anyOf.

[bnlcnd]

Can anyone give some input on the issue? Thanks a lot!

[dmitry-weirdo]

Exactly the same issue: *Api class refers to OneOf... and AnyOf... classes that are not generated. I think there a lot of issues and even PRs. Any plans to fix it?

Maven execution looks like this:

                    <execution>
                        <id>fdc-api-client</id>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                        <configuration>
                            <inputSpec>${project.basedir}/../etc/api/fdc_api.yaml</inputSpec>
                            <generatorName>java</generatorName>
                            <library>resttemplate</library>

                            <configOptions>
                                <sourceFolder>src/main/java/main</sourceFolder>
                                <dateLibrary>java8</dateLibrary>
                                <packageName>com.mycompany.ins.generated.fdc</packageName>
                                <apiPackage>com.mycompany.ins.generated.fdc.api</apiPackage>
                                <modelPackage>com.mycompany.ins.generated.fdc.model</modelPackage>
                                <useOptional>true</useOptional>
                            </configOptions>
                        </configuration>
                    </execution>

Version is

        <openapi-generator-maven-plugin.version>5.1.0</openapi-generator-maven-plugin.version>

The used FDC OpenAPI yaml can be found at https://api.nal.usda.gov/fdc/v1/yaml-spec?api_key=DEMO_KEY.