Allows to use Spring Data with EclipseLink single-table multitenancy.

Using multitenancy with EclipseLink is quite straightforward using @MultiTenant annotation.

However, there are some limitations with default behavior that this project allows to overcome :

• The persistence units must be defined at configuration level and cannot be created dynamically out of the box. One solution is to use a single persistence unit for all tenants (argh!).
• If you decide to go for a single persistence unit for all tenants, second level cache is not an option whenever you do something else than findById()

This project allows to :

• Create dynamically a persistence unit whenever a call on a new tenant is made
• Use separate PU for each tenant which allow to use second level cache and avoid mixing data
• Code using standard spring-data-jpa repositories