Add Jakarta Validation Support to Generated GraphQL Input Classes

[yidafu]

Is your feature request related to a problem? Please describe.

On the Kotlin JVM platform, without the @Valid annotation, we can only perform validation manually.

@Controller  
class ClientAddressMutationResolver() {  

  @MutationMapping  
  fun createAddress(  
    @Argument input: AddressInput,  
  ): Address {  
    if (input.detailAddress.length < 5 || input.detailAddress.length > 200) {  
       throw Exception("...")  
    }  
  }  
}

AddressInput is a generated class, such as:

data class AddressInput(  
    val detailAddress: kotlin.String,  
)

Describe the solution you'd like
If AddressInput could be generated with the jakarta.validation.constraints.Size annotation, validation could be automated.

@MutationMapping  
  fun createAddress(  
-    @Argument input: AddressInput,  
+    @Argument @Valid input: AddressInput,  
  ): Address {  
-    if (input.detailAddress.length < 5 || input.detailAddress.length > 200) {  
-       throw Exception("...")  
-    }  
  }

Generate AddressInputas shown below:

data class AddressInput(
+    @field:Size(min = 5, max = 200, message = "Detailed address length must be 5-200 characters")
      val detailAddress: kotlin.String,
}

And include a custom directive in the GraphQL schema definition:

directive @size(min: Int, max: Int, message: String) on ARGUMENT_DEFINITION | INPUT_FIELD_DEFINITION  

input AddressInput {  
  detailAddress: String!  
    @size(min: 5, max: 200, message: "Detailed address length must be 5-200 characters")  
}

Describe alternatives you've considered

Additional context