[Zope-dev] Problems adding many objects

[Chris McDonough]

On Sep 26, 2005, at 7:21 AM, Morten W. Petersen wrote:

> Chris,
>
> the implementation looks like this
>
> def manage_add_issue(self, id=None, title='', contents='',
>                 state='', type='', referrer='', format=None,
>                 REQUEST=None):
>     """Add an Issue."""
>     if id is None:
>         id = self.get_unique_id()
>     issue_ = issue(id, title, contents, state, type,
>                    creator=self.get_user().get_id(),
>                    owner=self.get_user().get_id(),
>                    format=format or
> self.get_user_preferences().issue_format)
>     self._setObject(id, issue_)
>     self.order.append(issue_.id)
>     self.order = self.order
>     issue_ = self[id]
>     issue_.version = self.get_issue_dealer().version
>     try:
>         self.index_object()
>     except AttributeError:
>         pass
>     if referrer and REQUEST is not None:
>         REQUEST.RESPONSE.redirect(referrer)
>         print 'redirect'
>     else:
>         if REQUEST is not None:
>             if self.inCMF():
>                 print 'admin url'
>                 return self.get_admin_url()
>             else:
>                 print 'manage_main'
>                 return self.manage_main(self, REQUEST)
>         else:
>             print 'returning issue', issue_
>             return issue_
>
> and before returning none, it says 'returning issue' on stdout.

It doesn't say "returning issue, None"?  My guess is that the if  
request is not none branch is called and it goes that way.  But  
there's no way to know for sure without running it.

This is a good place to use the Python debugger...  as the first line  
of this method, insert "import pdb; pdb.set_trace()", then start up  
Zope in the foreground (runzope or zopectl fg), then cause the method  
to be invoked through a browser.

On the console you will see a pdb prompt.  You can step through the  
code by using "n".  To print the value of a variable type "p  
<variablename>", to step in to a function call press "s".  When  
you're finished, press "c" to continue or "q" to quit.  This will be  
the fastest way to see what's happening in this method.

- C


>
> -Morten
>
> Chris McDonough wrote:
>
>> Hi Morten,
>>
>> You'd probably need to show us the implementation of whatever
>> "manage_add_issue" is.
>>
>> - C
>>
>>
>> On Sep 25, 2005, at 10:09 AM, Morten W. Petersen wrote:
>>
>>
>>> Hi,
>>>
>>> I've created a script that imports XML into the ZODB, using  
>>> regular  TTW
>>> methods - and all is fine, except for when I import large files,  
>>> with
>>> many objects.
>>>
>>> After about 288 objects, the import fails when the method that  
>>> adds an
>>> object in the ZODB returns None, instead of the object it added.   
>>> From
>>> what I can tell, the added object is not None before it is   
>>> returned, but
>>> the name object, set via the expression
>>>
>>>   object = self.manage_add_issue(...)
>>>
>>> is None.  So it looks like somewhere between 'return issue_' in
>>> manage_add_issue and the expression above, the object is lost.
>>>
>>> Any ideas what could be happening here?  I've managed to work   
>>> around it
>>> for now, but it is interesting nonetheless.
>>>
>>> Regards,
>>>
>>> Morten
>>>
>>> <morten.vcf>
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>>
>>
>>
>
>
> -- 
> Regards,
>
> Morten
>
> Tlf:  +47 45 44 00 69
> Blog: http://www.blogologue.com
>
> <morten.vcf>
>