for example I have a field like ``` { "name": "parameters", "type": [ ...

# announcements

[Alessandro Tagliapietra]

for example I have a field like

{
        "name": "parameters",
        "type": [
          "null",
          {
            "type": "array",
            "items": "Parameter"
          }
        ],
        "default": null

so it can have a null value but the avro generator generates a java getter like this

public java.util.List<Parameter> getParameters() {
    return parameters;
}

my problem is that when calling getParameters that returns null I get

java.lang.IllegalStateException: order.getParameters() must not be null

[Barco]

The nullability interop with Kotlin is acheived using the @Nullable annotation. Is there a way for Avro to apply that?

[Alessandro Tagliapietra]

@Barco I haven't found any reference to that

[Alessandro Tagliapietra]

for now I'm using order.getParameters() as List<Type>? and it's working fine but I have to repeat that every time I call the function

[Barco]

https://stackoverflow.com/a/56596685/4380236

Any good to ya?

[Barco]

https://avro.apache.org/docs/1.8.1/api/java/org/apache/avro/reflect/Nullable.html

[Alessandro Tagliapietra]

We're using avsc files unfortunately not java 😕 I'll check however if there's a way to do so in the avsc file, seems setting default as null and type as nullable with the union syntax is enough

[Alessandro Tagliapietra]

thank you very much 🙂

[Alessandro Tagliapietra]

also in that description:

Causes an Avro union with null to be used

which is the same exact thing so probably it wouldn't work anyway

[itnoles]

I found something like https://github.com/sksamuel/avro4k