Implementing the discriminator multitenancy strategy.

[Squid116]

I have a large database which has clustered indexes on the tenant id, which sadly doesn't form part of the primary key. I have 10 years of legacy code using nhibernate and hundreds of mappings I'd need to update so I am not really keen to update the keys on the nhibernate side if I can avoid it - this led me to think that if I could implement the discriminator multi tenancy strategy, my entity gets would start to make use of that clustered key.

Has anyone given any thought to implementing it, maybe even have a partial implementation in their fork, or able point me in the right direction to get started?