Ability to add custom serialization for scalar types #5
Description
Is your feature request related to a problem? Please describe.
I have a custom scalar type, which I register as
tasks.named<GraphqlCodegenGradleTask>("graphqlCodegen") {
...
customTypesMapping = mutableMapOf(Pair("EpochMillis", "java.time.LocalDateTime"))
...
}
it gives me
public class Comment {
...
private java.time.LocalDateTime createdTimestamp;
...
I would like to take a step further and define serialization logic with Jackson for the type
public class Comment {
...
@com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = com.example.json.EpochMillisScalarDeserializer.class)
private java.time.LocalDateTime createdTimestamp;
...
where(Kotlin code)
object EpochMillisScalarDeserializer : StdDeserializer<LocalDateTime>(LocalDateTime::class.java) {
override fun deserialize(p: JsonParser?, ctxt: DeserializationContext?): LocalDateTime {
return if (p != null) {
toLocalDateTime(p.longValue)
} else {
LocalDateTime.now()
}
}
}
Describe the solution you'd like
I would like to have a configuration
tasks.named<GraphqlCodegenGradleTask>("graphqlCodegen") {
...
customTypesMapping = mutableMapOf(Pair("EpochMillis", "java.time.LocalDateTime"))
customAnnotationsMapping = mutableMapOf(Pair("EpochMillis", "com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = com.example.json.EpochMillisScalarDeserializer.class)"))
...
}
where custom annotations will be added above fields with the EpochMillis type
Describe alternatives you've considered
Write a custom file editor after the object generation, which is capable of find the right place to insert the desired logic.