class Profile:Entity<long>
{
        string Name{get;set;}
        IList<Modules> Modules{get;set;}
        IList<Resource> Resources{get;set;}

        public bool IsUrnContains(string urn)
        {
               foreach(Resource resource in Resources)
               {
                     if(resource.URN == urn) return true;
               }
               return false;
        }
}
class Resource : Entity<long>
{
        string URN{get;set;}
        string Description{get;set;}
}
class Module : Entity<long>
{
       string Name{get;set;}
       string Description{get;set;}
}

interface IRepository<TEntity, TId> : IDisposable
{
       IList<EntityT> FindAll();
       EntityT GetById(Tid id);
       EntityT Save(EntityT entity);
       EntityT Update(EntityT entity);
       void Delete(EntityT entity);
}

interface IProfileRepository:IRepository<Profile,long>{}
interface IModuleRepository:IRepository<Module,long{}
interface IResourceRepository:IRepository<Resource,long>{}

interface IRepositoryFactory
{
        IProfileRepository GetProfileRepository();
        IResourceRepository GetResourceRepository();
        IModuleRepository GetModuleRepository();
}

class Module
{      
      void Save()
      {
          if(Name!="Module1") repository.Save(this);
      }
}
?

if(module.IsValid) repository.Save(module)

class ApplicationService
{
      protected virtual IRepositoryFactory GetRepositoryFactory()
     {
             return new RepositoryFactoryNH();
     }
}

class ModuleService : ApplicationService
{
      void SaveModule(Module module)
     {
             if(!module.IsValid) throw new NotValidException();
             
             this.GetReositoryFactory().GetModuleRepository().Save(module)
     }
}