On Jul 10, 2006, at 2:55 PM, Michael Carter wrote: > That aside and more importantly, I'm still having some issues with > more basic stuff. That is, I can't get a handle on how to use > expunge and update properly. When I pickle an object to a file or > memcache (before or after expunging it), the _state attribute > doesn't go along with it, nor does any persistent attribute that > hasn't been changed from the default of None. Because of this, > update fails when it tries to access _state on the unpickled > version. I was originally unaware of this because the process works > out fine if I unpickle the item in the same python instance where I > pickled it -- the object has _state and all the other attributes. >
er thats a little weird, when you unpickle the object, have all the relevant classes had the same Mappers set up on them ? the _state attribute is a class-level property accessor that will only be there if the class has been set up with a mapper (as are all the other properties for which youre looking for default values). the actual data for _state is in the __dict__ as "_<classname>__sa_attr_state". this is all class-level stuff thats not related to the instance being in or out of a Session. ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Sqlalchemy-users mailing list Sqlalchemy-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sqlalchemy-users
