> Whatever you are doing, you are doing the "wrong > thing". > > You are instantiating persistent objects and not storing > them in the > ZODB. This is going to cause your ZODB to grow, so you > might as well > store them. > > Otherwise you need to make non-persistent versions of the > objects you > are trying to 'cache' and use those instead. > > -- > Andrew Milton > [EMAIL PROTECTED]
Not exactly. I am instantiating non persistent objects that do have a reference to persistence objects in the form of an attribute, and then trying to cache those non persistent objects. Do the fact that these non persistent objects store a reference to persistent ones turn them into persistent ? I am curious to know. Anyway, I tried the volatile attribute thing (http://wiki.zope.org/ZODB/VolatileAttributes) and first tests look fine. This is how I did the trick : =================== ZODBLivinObject.py =================== from OFS.SimpleItem import SimpleItem from NonZODBObject import NonZODBObject class ZODBLivingObject(SimpleItem) : """ Hello, I live in the ZODB. """ meta_type = "ZODBish" def __init__(self): """ """ self.id = "ZODBish" self.title = "ZODBish" def sayHi(self): """ """ # NonZODBObject stores a reference of self, a ZODB-living object. nonZODBish = NonZODBObject(self) # This line breaks everything. Comment it and every thing will be just right. # self.REQUEST.SESSION.set('breakish',nonZODBish) self.setNonZODBish(nonZODBish) # This can be seen in the console if runzope print "it's me",nonZODBish.context return nonZODBish.context def setNonZODBish(self,p_nonZODBish): """ """ setattr(self,'_v_NonZODBish',p_nonZODBish) def getNonZODBish(self): """ """ if not hasattr(self,"_v_NonZODBish"): self.setNonZODBish(None) return self._v_NonZODBish And then I use the setNonZODBish et getNonZODBish methods to set and access the cached value. _______________________________________________ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
