public DataTuple UpdateDataTuple(DataTuple entity)
{
Contract.Requires(entity != null, "provided entity can not be null.");
Contract.Requires(entity.Id >= 0, "provided entity must have a permanent ID.");
Contract.Ensures(Contract.Result<DataTuple>() != null && Contract.Result<DataTuple>().Id >= 0, "No entity is persisted!");
using (IUnitOfWork uow = this.GetUnitOfWork())
{
IRepository<DataTuple> repo = uow.GetRepository<DataTuple>();
repo.Put(entity); // Merge is required here!!!!
uow.Commit();
}
return (entity);
}