[odb-users] _cache_persist not called

[Boris Kolpackov]

Hi Konstantin,

Konstantin Tarovik <konstantin.tarovik at ab-soft.net> writes:

> Looks like the problem arises when I use smart pointers (i.e.
> #pragma db object(Conversation) pointer(std::shared_ptr) ).

Ok, I think I know what's going on. If you use shared_ptr
(or any other smart pointer) as an object pointer, the
session no longer caches objects that were passed to
persist() by reference (since we cannot assume it's ok to
use the reference to initialize the smart pointer). In
other words:

shared_ptr<object> o = ...;

db.persist (*o); // Not cached.
db.persist (o);  // Cached.

Boris