Merry Christmas to all,
> On Dec 25, 2017, at 1:27 AM, Niclas Hedhman <nic...@hedhman.org> wrote:
>
> Merry Christmas everyone,
>
>
> Invariant checking is about ensuring that an Entity Aggregate is never
> accessible in a incoherent state. Transactions/UnitOfWork takes care of the
> atomicity, but there is no built-in mechanism to ensure that an invalid
> state has not occurred "naturally", say, the total allocated container CPU
> load isn't higher than the host's available CPU capacity. At the moment,
> such thing needs to be built in somewhere, and without front-facing
> services handling such entities, it is quite easy for developers to
> "forget" or "didn't know" such rules.
>
for Entity invariant checks I found useful hook via UnitOfWorkCallback.
The one that is executed per entity instance if entity implements
UnitOfWorkCallback.
Basically this is how I do cross fields validation for entities.
I am thinking if this hook could be optimized and executed only if entity
changed, now it is executed for all loaded instances.
cheers,
Tibor
