Hello everyone, after updating to Kotlin 1.4.10 wi...

# serialization

[zeugederunity]

Hello everyone,
after updating to Kotlin 1.4.10 with Serialization 1.0.0-RC I realized, that the SerialName annotation was set to retention(BINARY)
Is there any way in Kotlin 1.4.x with Serialization 1.0.0-RC to retrieve the SerialName of an annotated property? Because reflection is now not possible anymore.

[Vsevolod Tolstopyatov [JB]]

Could you please file an issue and explain your use-case? Specifically, could you please elaborate on why do you want to inspect properties reflectively instead of using SerialDescriptor?

[zeugederunity]

I am using the Kotlin-Serializer for a MongoDB binding (with KBson and some additional modifications like a shared commons etc.)

For improvint the writing of queries i wrote a little DSL, therefore i have functions like this:

inline infix fun <T : Any, TItem> KProperty1<T, TItem>.eq(value: TItem?): Bson = fieldName eq value

Usually using the default name reflection of a dataclass-property is enouth, bus due to some legacy code and naming conventions i have to use @SerialName for some properties like @SerialName("_id") val id: Id<CompanyData> .

In 1.3.70 i was able to retrieve the reflected name of the KProperty of a class by this:

annotations.filterIsInstance<SerialName>().singleOrNull()?.name ?: name

and then cache it.

My workaround at this point is, that i wrote a second annotation class

@Retention(AnnotationRetention.RUNTIME)
@Target(AnnotationTarget.PROPERTY)
annotation class MongoDBName(val name: String)

and use this class to reflect the name. Sadly this has the sideeffect, that my properties look like this @SerialName("_id") @MongoDBName("_id") val id: Id<CompanyData> which is quite inconvenient and harder to maintain.

[zeugederunity]

I'll write a proper issue report tomorrow, it's it is already quite late.

Thank you for the reply, good night.

[zeugederunity]

Wrote a Feature Report:
https://github.com/Kotlin/kotlinx.serialization/issues/1081