Hello,
I have a scenario like below :
- Session has weak_identity_map set to true. Therefore session is self
pruning.
- In some situations, the session might contain object references, which
have been deleted by other sessions from the database.
- In such cases, I want to remove the references of those deleted objects
from this session's identity_map.
- Running a gc.collect() could be expensive.
- I just have primary key of the object that got deleted from another
session.
Which is the fastest way to remove this specific object from the session's
identity_map? Currently I am doing something like below :
# dkey is a tuple and will have the primary key of the object that just got
deleted from the db through another session.
dobj = None
for obj in session.identity_map:
c, k = obj #extract class and the primary key tuple from the object.
if k == dkey:
dobj = obj #get the object reference to be deleted.
break #The session wont contain multiple references to the same obj
anyway.
session.identity_map.remove_key(dobj) #delete that object from the session.
I am worried about the iteration that I do, which could consume significant
time in case session has a lot of objects after a bulk query/insertion etc.,
Is there a better way to do this?
Thanks for the help!
Regards,
Harish
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