[BUG] OneOf java classes not getting generated as part of codeGen in gradle plugin 4.0.0

[samarthgupta437]

When I generate sever stub for spec having OneOf tags, the code generation gradle task is successful , but in the generated models package OneOf*.java classes are missing.

I am using org.openapitools:openapi-generator-gradle-plugin:4.0.0 for "jaxrs-jersey" generatorName.

For example for below YAML file class "OneOfSofa1Sofa2" is not getting generated , but it is referred for variable "sofaStyle" in generated class Home.java

I have attached the YML as txt
home.txt

Below gradle task was used:
openApiGenerate { generatorName = "jaxrs-jersey" inputSpec = "$rootDir/src/main/resources/home.yml".toString() outputDir = "$rootDir".toString() apiPackage = "com.home.rest.resources" invokerPackage = "com.home.rest" modelPackage = "com.home.rest.model" modelFilesConstrainedTo = [] configOptions = [ dateLibrary: "java8" ] }

Screenshot of how it looks in editor

[judgej]

OneOf classes also not being generated for the PHP client. The expected class name seems appropriate\ OneOfType1Type2Etc with each data type of reference name listed, but the classes are just not created.

I'm mentioning this in case it's a problem with the underlying spec parsing rather than the language generator.

This is in my spec for a response object property:

          "currentAuthorisation": {
            "oneOf": [
              {
                "$ref": "#/components/schemas/simpleAuthorisation"
              },
              {
                "type": "string",
                "nullable": true,
                "description": "null if there is no current authorisation"
              }
            ]
          },

The class not being generated is OneOfSimpleAuthorisationString (OneOf + SimpleAuthorisation + String) though the deserialiser is expecting it when currentAuthorisation is not null.

[audricschiltknecht]

For Java, I'm hitting the same issues using both the CLI and the gradle plugin: Oneof classes are not generated.
Also the case for Python code, I'm guessing this is more of a general issue than a language-specific one.

[ChintanSK]

Facing the same problem with the java maven plugin: OneOf* classes are not generated, hence failing the compile task in the maven build.

[alfirin]

Same issue here.

[Frontrider]

Same here.

[wackykid]

so when is this going to be resolved? I am using the latest openapi-generator and I too get this issue. luckily I am doing the design of the API so I can redesign my API to NOT use oneOf to avoid this. but i will love very much to implement oneOf as some of my APIs are designed to return different object types depending on the input.

[giannisla]

do we know when is it going to be resolved?

[gigaga]

Same for me for generating Java server.

[Alex118]

Same issue here. This is a critical blocker for using openapi generator in our project as we deal with polymorphic APIs.

Has anyone at least found a workaround for this?

[Frontrider]

A workaround is to create those classes manually.

[wackykid]

A workaround is to create those classes manually.

any examples on how these classes should look like..?

[Frontrider]

Depends on your setup. We just extend one of the classes that it generated as the parent of the ones we need, then implement all of the unique parts. That will look like the class we need.