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Add option `DefaultTyping.EVERYTHING` to support Kotlin data classes

See original GitHub issue

Most usages of ObjectMapper.DefaultTyping are NON_FINAL which seems the wider scope available, which is real issue with Kotlin data classes which are final by design and can’t be open. As a consequence, usage in Spring Data Redis turn to be a very difficult journey (GenericJackson2JsonRedisSerializer is very popular but not usable with Kotlin).

Is it possible to include a more Kotlin friendly enum value that would support final classes?

Issue Analytics

State:
Created 4 years ago
Reactions:2
Comments:9 (5 by maintainers)

Top GitHub Comments

3reactions

cowtowncodercommented, Aug 28, 2019

Hmmh. So after re-reading this again I finally understand the usage. So if serializing one of leaf types, nominal type is that final type but just because “real” base type can not be known without caller providing it.

I guess that although there are other problems involved here (ideally base type should be indicated somehow), adding of new choice is probably not a bad idea.

I will add DefaultTyping.EVERYTHING.

2reactions

tmdgusyacommented, Feb 14, 2022

@isadounikau

val om = ObjectMapper()
            .registerModule(KotlinModule())
            .registerModule(JavaTimeModule())
            .activateDefaultTyping(BasicPolymorphicTypeValidator.builder()
                .allowIfBaseType(Any::class.java)
                .build(), ObjectMapper.DefaultTyping.EVERYTHING)

val serializer = GenericJackson2JsonRedisSerializer(om)

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