[nosql-dev] Polymorthism help needed.

[Dmitry Repchevsky <redmitry@xxxxxxx>]

Hi all,

Great to see that spec. and implementation is moving forward.
Especially that annotations are moving to the spec.:
org.eclipse.jnosql.mapping.Inheritance -> jakarta.nosql.Inheritance

Nevertheless, I have a trouble with custom inheritance with 1.1 using 
ValueReader.
The implementation has changed (was Document and its an Element now).

Is there an elegant way to implement the inheritance when I have no 
discriminator field?

public class MeasurementValueReader implements ValueReader {
    @Override
    public <T> T read(Class<T> clazz, Object value) {
        if (List.class.isInstance(value)) {
            final List list = List.class.cast(value);
            if (list.stream().filter(Entry.class::isInstance)
                    .anyMatch(e -> "unit".equals(((Entry)e).name()))) {
                return (QuantityEntity) ???;
            }
        }

How may I manually convert Object value into the concrete 
(QuantityEntity) type (I catch the "Measurement" interface).

Thank you in advance,

Dmitry