@JsonUnwrapped doesn't work for @JsonCreator objects

[jakub-bochenski]

Describe the bug
This is different than #1497

The problem is that apparently you cannot use a @JsonCreator class as a subject of @JsonUnwrapped annotation

Version information
Which Jackson version(s) was this for?
2.14.1

To Reproduce

    public static final class ClassificationCatalog {
        private final String code, catalogId, version;

        @java.beans.ConstructorProperties({"code", "catalogId", "version"})
        public ClassificationCatalog(String code, String catalogId, String version) {
            this.code = code;
            this.catalogId = catalogId;
            this.version = version;
        }

        public String getCode() {
            return this.code;
        }

        public String getCatalogId() {
            return this.catalogId;
        }

        public String getVersion() {
            return this.version;
        }
    }

    public static class ClassificationCatalogMapping {
        String key;
        @JsonUnwrapped
        ClassificationCatalog value;

        public ClassificationCatalogMapping() {
        }

        public String getKey() {
            return this.key;
        }

        public ClassificationCatalog getValue() {
            return this.value;
        }

        public void setKey(String key) {
            this.key = key;
        }

        public void setValue(ClassificationCatalog value) {
            this.value = value;
        }
    }

Trying to deserialize this from

	{
						"key" : "Upc",
						"code": "1095",
						"catalogId": "ElectronicsClassification",
						"version": "1.0"
					}

will result in com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "code"

Expected behavior
Data is deserialized

[pjfanning]

You need to provide a Java only example. We do not generally accept Lombok examples. Jackson-databind only has a small number of dependencies and there is no plan to add Lombok to the mix.

[cowtowncoder]

Note: maybe this is the same as #1467 (ultimately), as well as a few issues reported wrt @JsonUnwrapped trying to set Fields -- which I think it is -- the answer really is that @JsonUnwrapped ONLY works with Setter methods and Fields.

And Records being immutable it is currently impossible to use it with Records.

[jakub-bochenski]

I've updated the example to plain java

@cowtowncoder I think the docs are rather unclear

Also note that annotation only applies if:
Value is serialized as an Object valie (can not unwrap Array values using this mechanism)
Reading/writing is done using Jackson standard BeanDeserializer / BeanSerializer; or custom deserializer/serializer MUST explicitly support similar operation.
Will not work with polymorphic type handling ("polymorphic deserialization")

[yihtserns]

@jakub-bochenski maybe you can upload a sample repo to Github to demonstrate the issue - I'm not able to reproduce it on my side.

[jakub-bochenski]

Hey, you are right. It's failing because somebody had the bright idea to install this modifier:

public class JacksonDeserializerModifier extends BeanDeserializerModifier {

    @Override
    public JsonDeserializer<?> modifyDeserializer(DeserializationConfig config, BeanDescription beanDesc, JsonDeserializer<?> deserializer) {
        if (deserializer instanceof BeanDeserializer) {
            return new JobValidationDeserializer((BeanDeserializer) deserializer);
        }
        return deserializer;
    }
}