# devopsgym / codegen__fasterxml__jackson-databind-3666

- taskset: [devopsgym](https://harnessreport.com/tasks/devopsgym.md)
- difficulty: hard
- category: code-generation
- language: 
- runnable from the site: no
- agent timeout: 3000s

## Results by harness

_none yet_

## Instruction

```
This is a code generation task. You are expected to write working code that solves the described problem.
<issue>
      Using Jackson `2.9.9.3`.

This issue was carried over from micronaut-core: https://github.com/micronaut-projects/micronaut-core/issues/8215

Example test-case:

```java
package arrayissue;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.annotation.JsonCreator;

enum MyEnum {
    FOO("FOO"),
    BAR("BAR");

    private String value;

    MyEnum(String value) {
        this.value = value;
    }

    public static void main(String[] args) throws JsonProcessingException {
        ObjectMapper om = new ObjectMapper();
        om.enable(DeserializationFeature.UNWRAP_SINGLE_VALUE_ARRAYS);
        System.out.println(om.readValue("\"FOO\"", MyEnum.class));
        System.out.println(om.readValue("[\"FOO\"]", MyEnum.class));
    }

    @JsonCreator
    public static MyEnum fromValue(String text) {
        System.out.println("-- CONVERTING FROM: " + text);
        return MyEnum.FOO;
    }
}
```

Result:

```
-- CONVERTING FROM: FOO
FOO
-- CONVERTING FROM: null
FOO
```

</issue>
Focus on implementing the required functionality correctly and efficiently. Treat this as a programming challenge.
You are not allowed to read git history.
```
---
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