In a multi-tenant ASP.NET MVC application based on Rob Conery's MVC Storefront, should I be filtering the tenant's data in the repository or the service layer?

1. Filter tenant's data in the repository:

public interface IJobRepository
{
    IQueryable<Job> GetJobs(short tenantId);
}

2. Let the service filter the repository data by tenant:

public interface IJobService
{
    IList<Job> GetJobs(short tenantId);
}

My gut-feeling says to do it in the service layer (option 2), but it could be argued that each tenant should in essence have their own "virtual repository," (option 1) where this responsibility lies with the repository.

• Which is the most elegant approach: option 1, option 2 or is there a better way?

Update:

I tried the proposed idea of filtering at the repository, but the problem is that my application provides the tenant context (via sub-domain) and only interacts with the service layer. Passing the context all the way to the repository layer is a mission.

So instead I have opted to filter my data at the service layer. I feel that the repository should represent all data physically available in the repository with appropriate filters for retrieving tenant-specific data, to be used by the service layer.

Final Update:

I ended up abandoning this approach due to the unnecessary complexities. See my answer below.