OpenAPITools / OpenAPITools/openapi-generator

[BUG] [JAVA] Object Property Default Value results in invalid Java Code

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Issue: Bug
Dominant language
Java
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Description

Description

Using:

<generatorName>java</generatorName>
<library>apache-httpclient</library> or <library>resttemplate</library>

OpenAPI:

type: object
  properties:
    __type:
      type: string
      default: myType

Generated Java Code:

  public static final String JSON_PROPERTY_TYPE = "__type";
  private JsonNullable<Object> type = JsonNullable.<Object>of(myType);

As you can see the defautl value is plain Java and no Java String (missing quotes) which is invalid code ("cannot find symbol").

openapi-generator version

Affects all versions (tested 6.6 to latest 7.4).

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the issue with the supplied Java generator configuration and OpenAPI schema, then trace how the Java generator emits an object property's default value. Done means the generated JsonNullable initializer quotes myType so the generated Java code is valid.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, openapi
Domain
api
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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