[BUG][CLOJURE] Clojure fails with java.lang.ClassCastException

[njerig]

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?

• What's the actual output vs expected output?
  Expected: a Plaid client is produced

  Actual output:

Exception in thread "main" java.lang.RuntimeException: Could not process model 'ProfileGetResponse'.Please make sure that your schema is correct!
        at org.openapitools.codegen.DefaultGenerator.generateModels(DefaultGenerator.java:540)
        at org.openapitools.codegen.DefaultGenerator.generate(DefaultGenerator.java:1226)
        at org.openapitools.codegen.cmd.Generate.execute(Generate.java:535)
        at org.openapitools.codegen.cmd.OpenApiGeneratorCommand.run(OpenApiGeneratorCommand.java:32)
        at org.openapitools.codegen.OpenAPIGenerator.main(OpenAPIGenerator.java:66)
Caused by: java.lang.ClassCastException: class java.lang.Boolean cannot be cast to class io.swagger.v3.oas.models.media.Schema (java.lang.Boolean is in module java.base of loader 'bootstrap'; io.swagger.v3.oas.models.media.Schema is in unnamed module of loader 'app')
        at org.openapitools.codegen.languages.ClojureClientCodegen.getTypeDeclaration(ClojureClientCodegen.java:174)
        at org.openapitools.codegen.DefaultCodegen.fromProperty(DefaultCodegen.java:4130)
        at org.openapitools.codegen.DefaultCodegen.fromProperty(DefaultCodegen.java:3931)
        at org.openapitools.codegen.DefaultCodegen.addParentContainer(DefaultCodegen.java:5838)
        at org.openapitools.codegen.DefaultCodegen.addAdditionPropertiesToCodeGenModel(DefaultCodegen.java:3722)
        at org.openapitools.codegen.DefaultCodegen.updateModelForObject(DefaultCodegen.java:2966)
        at org.openapitools.codegen.DefaultCodegen.fromModel(DefaultCodegen.java:3188)
        at org.openapitools.codegen.languages.ClojureClientCodegen.fromModel(ClojureClientCodegen.java:205)
        at org.openapitools.codegen.DefaultGenerator.processModels(DefaultGenerator.java:1681)
        at org.openapitools.codegen.DefaultGenerator.generateModels(DefaultGenerator.java:535)
        ... 4 more

Description

The output is above and command to generate the output is below.

openapi-generator version

v7.4.0

OpenAPI declaration file content or url

https://github.com/plaid/plaid-openapi/raw/master/2020-09-14.yml

Generation Details

openapi-generator-cli generate -g clojure -i 2020-09-14.yml -o build/generated-clojure

Steps to reproduce

1. Clone plaid-openapi
2. Install OpenAPI Generator CLI v7.4.0
3. Run the above command (in "Generation Details")

Suggest a fix

from ClojureClientCodegen.java#L174:

Schema inner = (Schema) p.getAdditionalProperties();

This always suggests that getAdditionalProperties always returns a Schema object when it can also return a Boolean. Extra handling for the types might be needed.

[wing328]

can you please file a PR with the suggested fix?