On Mon, 12 Apr 2004 10:57:43 -0500 <[EMAIL PROTECTED]> wrote: > Casey, > > Thanks for the clarification. > > > > - Is there an equivalent of sys.getrefcount for ZODB persistent > > > objects? > > This is still a question. Is there any way, to determine how many > times a zodb persistent object is referenced? sys.getrefcount seems to > tell me only those references which are currently loaded in the > memory. Also another very interesting question is that who referring > to a specific object.
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Not from a given object. You would need to walk the forward references (which are tracked) of all the objects to find this out. I posted some code to do this from any starting object in the ZODB a long time ago. Search the mail archives if you're interested. > > > For this I got the oid of the object, > > > deleted it and than tried to get it back via the oid. The trick > > > is, that you'll only get a POSKeyError if you pack the database > > and flush > > > the cache. This latter one was not obvious for me. > > > > Such tricks are not necessary and cause your app to rely too > > much on the > > curent implementation of ZODB. Just let the database take care of > > this for you. > > I used this trick only for exploring ZODB behavior. The application > doesn't do any nasty tricks. ok. -Casey _______________________________________________ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
