I would like to suggest bring this to GH discussion for more ideas.
2025년 3월 22일 (토) 오후 2:50, wrongwrong <[email protected]>님이 작성:
> Thank you all for the replies.
>
> > If I understand your problem correctly, IllegalArgumentException would
> be the most appropriate choice because null is a valid response
> from readValue.
>
> In edge cases, the return value of readValue may not be valid.
> Since ObjectMapper can be inherited, it is possible that null will be
> returned due to an implementation error.
> It is even possible that an invalid value is returned.
>
> Personally, I feel that IllegalArgumentException may not be the way to go
> in such cases.
>
> > Or consider InvalidNullException?
>
> I initially thought this would be better, but had the above concerns.
> Would the more abstract JsonMappingException be more appropriate?
>
> 2025年3月22日土曜日 11:32:12 UTC+9 Joo Hyuk Kim:
>
>> Or consider InvalidNullException?
>> Its doc says...
>>
>> /**
>> * Exception thrown if a `null` value is being encountered for a property
>> * designed as "fail on null" property (see {@link
>> com.fasterxml.jackson.annotation.JsonSetter}).
>> *
>> * @since 2.9
>> */
>> public class InvalidNullException
>>
>>
>> On Sat, Mar 22, 2025 at 7:43 AM Sandeep Gaur <[email protected]>
>> wrote:
>>
>>> Hi,
>>>
>>> If I understand your problem correctly, IllegalArgumentException would
>>> be the most appropriate choice because null is a valid response from
>>> readValue. The additional restriction is being imposed by the client,
>>> making IllegalArgumentException the right fit for enforcing this
>>> constraints.
>>>
>>> Thanks,
>>> Sandeep gaur
>>>
>>>
>>>
>>> On Sat, 22 Mar, 2025, 12:39 am wrongwrong, <[email protected]> wrote:
>>>
>>>> Hello everyone, I'm looking for advice on implementation in
>>>> kotlin-module.
>>>>
>>>> The ObjectMapper.readValue may return null as a result.
>>>> On the other hand, in the kotlin-module extension, if the user calls
>>>> readValue expecting non-null, an error should be thrown if the result is
>>>> null(https://github.com/FasterXML/jackson-module-kotlin/issues/399).
>>>>
>>>> I have learned how to achieve this, but am struggling with which
>>>> exception should be thrown as a validation error.
>>>>
>>>> 1. NPE
>>>> 2. some exception defined in Jackson (what would be appropriate?)
>>>> 3. any proprietary exception in kotlin-module
>>>>
>>>> Personally, I think 2 is better, but is there any appropriate exception?
>>>> Any advice would be appreciated.
>>>>
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