Support join to unrelated entity (ad hoc joins)

[reda-alaoui]

It would be nice to standardize ad hoc joins introduced by Hibernate 5.1.
That would allow us to use them with the Criteria API.

Entity joins (or ad hoc joins)
In HQL you now have the ability to define a join to an entity, not just a mapped association. For example:

select ...
from FinancialRecord f
left join User u
on r.lastUpdateBy = u.username

See HHH-16 for details.

[andyjefferson]

See #128 and close this

[reda-alaoui]

Oh I didn’t see it.
Closing.