Martijn Faassen wrote:
> Another data point. Copy & paste of ParsedXML documents is normal
> and fast when the object is in a folder not surrounded by too
> many other folders (or objects in general, not sure yet). If I create
> a bunch of very large folders sitting next to the ParsedXML document
> that I'm going to copy, the copying process slows down and generates
> a lot of extraneous megs that I can then clean out again from the ZODB.
> Somehow the document is being affected by its environment, though I
> doubt I have the full story yet (I did have problems with folders that
> were not filled with anything else before).
The manage_beforeDelete() and manage_afterAdd() events are propagated to
subfolders, meaning that a whole lot of objects have to wake up every
time you add or remove something. Or it might be manage_afterClone()
being called, which is very similar. You could add a temporary print
statement to ObjectManager.manage_after* to see just how often the
methods are getting called.
The solution? Event management. Make objects register to receive events.
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