Delegating JsonCreator disregards `JsonDeserialize.as` (and `contentAs`) annotation

[carterkozak]

Given a class of this form, the documentation suggests that value should be created as a LinkedList, however it is always an ArrayList. Furthermore, if I modify the @JsonDeserialize annotation with incorrect values (e.g. as = HashMap.class) it does not change behavior.

public final class Wrapper {
    private final List<String> value;

    @JsonCreator
    public Wrapper(@JsonDeserialize(as = LinkedList.class) List<String> value) {
        this.value = value;
    }

    @JsonValue
    public List<String> getValue() {
        return value;
    }
}

If I expect an object with a property by using a @JsonProperty annotation, the @JsonDeserialize annotation does work as expected.

Simple repro here:
https://github.com/cakofony/jackson-jsoncreator-deserializeas-repro

Test class is located here

Happy to provide additional info.
Thanks!

[cowtowncoder]

Yes, seems legit; @JsonDeserialize should be taken into account. And since there is explicit @JsonCreator this should not be due to failed merging of annotation.

[cowtowncoder]

Ok, I can reproduce this. Looks like usual type refinement is not called for parameters to delegating-creator; and this would also prevent custom using/contentUsing/keyUsing deserializer assignments as well. So will be adding tests, figuring out how to make it work as expected.
As far as I can see has probably never worked so is not regression.

[cowtowncoder]

Thank you for reporting this! I will see if I can also test and (if need be) fix support for using annotation as well, for custom deserializers.

Fix will be in 2.9.6.

[carterkozak]

Wonderful, thanks for the fix @cowtowncoder!