[hibernate-dev] Adding support for Java 8's Optional to ORM

[Gunnar Morling]

2014-07-28 11:48 GMT+02:00 Sanne Grinovero <sanne at hibernate.org>:

> We'd also love to support some features (especially the new user types
> such as Date/Time) in Hibernate Search.
>

Ah, right. I've heard requests about the 310 date/time types as well.

>
> I don't think we should require Java8 for all users though, so I'd
> like this to be an independent module.. troublesome with Maven though,
> so this wasn't done yet.
>

Yes, it should definitely be optional.

I think it depends on the specific case how easy or hard this will be to
achieve. If it's something rather isolated such as a specific user type
it's easy, but in other cases it's more painful (e.g. marking annotation
types as repeatable cannot really be done in a backwards-compatible manner,
so it needs effectively two variants of such an annotation).

--Sanne
>
> On 28 July 2014 07:36, Gunnar Morling <gunnar at hibernate.org> wrote:
> > Hi,
> >
> > Java 8 introduced a new type Optional which may be used to represent
> > objects which may be set or not set:
> >
> >     private Optional<String> name;
> >
> > Hibernate Validator will allow to validate properties of this type in the
> > next release. Now someone brought up the question whether the same is
> > planned for ORM, so one can use Optional in entity properties.
> >
> > Any thoughts?
> >
> > Thanks,
> >
> > --Gunnar
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