JSON-B transient and property annotation collide

[sdaschner]

When mapping a class via JSON-B, and annotating fields as follows, the result throws an error because of mismatching types:

public class Coffee {

    @JsonbTransient
    private Order order;

    @JsonbProperty("order")
    private URI orderLink;

    Coffee() {
        order = new Order();
        orderLink = URI.create("http://localhost/");
    }

    // getters & setters
}

this results in:

[ERROR   ] Unable to serialize property 'order' from com.sebastian_daschner.openliberty.Coffee
[ERROR   ] Generating incomplete JSON
[ERROR   ] Problem with writing the data, class com.sebastian_daschner.openliberty.Coffee, ContentType: application/json

If both properties order and orderLink have the same type, it works as expected (i.e. orderLink is serialized as "order").

However, if we annotate @JsonbProperty on the setter instead, it works:

public class Coffee {

    @JsonbTransient
    private Order order;

    private URI orderLink;

    // [...]

    @JsonbProperty("order")
    public URI getOrderLink() {
        return orderLink;
    }

}

Response:

{"order":"http://localhost/"}

There seems to be an unexpected type link of the (ignored) property with the default serialized JSON key "order", and the custom name binding.

Tested with Open Liberty 20.0.0.8/wlp-1.0.43.cl200820200721-1900 on Eclipse OpenJ9 VM, version 14+36

[aguibert]

This issue was also raised in Quarkus so I'm just going to track it at the source in Yasson here:
eclipse-ee4j/yasson#444