Applying Repository Pattern to ReportViewModels

public interface IRepository<TEntity> 
{
    TEntity FindById(Guid id);
    void Add(TEntity entity);
    void Remove(TEntity entity);
}

This is a simple generic repository. If I have a Product entity, this repository can insert, update, delete. (Using entity framework.)

But I have Report based types that I created. For example:

• Products that grouped by salesmen.


• 
  

  Number of orders sent by each shipper.

  
  

  public class OrdersWithShipper{ public string ShipperName{get;set;} public string NumberOfOrder{get;set;} }

  
  

And so on.

So I should create cpmplex queries to many tabres that related. But quey result object is not representing with repository TEntity entity type.

I have many report type like this. How can I solve this problem?