Repository

Repository.cs

public interface IRepository
{
    TEntity Get<TEntity>(Guid id) where TEntity : IEntity;

    TEntity FindOne<Query, TEntity, Tparam>(Tparam param) where Query : ISingleItemQuery<TEntity, Tparam>, new();

    IEnumerable<TEntity> FindAllFor<Query, TEntity, TParameter>(TParameter parameter) 
        where Query : IFindAllQuery<TEntity, TParameter>, new()
        where TEntity : IEntity;

    void Save<TEntity>(TEntity entity) where TEntity : IEntity;
    void Delete<TEntity>(TEntity entity) where TEntity : IEntity;
}

public interface ISingleItemQuery<TEntity, TParam>
{
    TEntity RunAgainst(ISession session, TParam param);
}

public interface IFindAllQuery<out TEntity, in TParameter>
{
    IEnumerable<TEntity> FindUsing(ISession session, TParameter parameter);
}