[Zope3-dev] Re: strange behavior of intid-utility

[Jürgen Kartnaller]

Hi Tom.

The container is "NotYet" assigned to a database inside __init__ .

It is assigned as soon as the container is contained somewhere else 
which is done after init is executed.

The best way to go around this problem is usually your content in an 
ObjectAddedEvent handler for your container.


Jürgen


Tom Gross wrote:
> Hi Jürgen,
> 
>    thanks for the explanation. But this is not a problem of the 
> workflow. It is just a special case of the following situation:
> 
>>>> class MyContent(Persistent, Contained):
> 
> ...     """ """
> 
>>>> class MyContainer(BTreeContainer):
> 
> ...    def __init__(self):
> 
> ...        super(MyContainer, self).__init__()
> 
> ...        self[u'foo'] = MyContent()
> 
> 
> which raises a NotYet-exception with IntIds present, but not without. 
> And it just uses core zope3 elements. Is this behavior intended?
> 
> Cheers
> -Tom
> 
>  File "/usr/lib/python2.4/unittest.py", line 260, in run
> 
>    testMethod()
> 
>  File "/mnt/zope/ldev/var/zope/lib/python/myproduct/ftests.py", line 37, 
> in test_withoutintids
> 
>    basic='mgr:mgrpw')
> 
>  File 
> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/testing/functional.py", 
> line 357, in publish
> 
>    publish(request, handle_errors=handle_errors)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/publisher/publish.py", 
> line 133, in publish
> 
>    result = publication.callObject(request, obj)
> 
>  File 
> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/publication/zopepublication.py", 
> line 161, in callObject
> 
>    return mapply(ob, request.getPositionalArguments(), request)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/publisher/publish.py", 
> line 108, in mapply
> 
>    return debug_call(obj, args)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/publisher/publish.py", 
> line 114, in debug_call
> 
>    return obj(*args)
> 
>  File 
> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/container/browser/adding.py", 
> line 142, in action
> 
>    content = factory()
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/component/factory.py", 
> line 37, in __call__
> 
>    return self._callable(*args, **kw)
> 
>  File "/mnt/zope/ldev/var/zope/lib/python/myproduct/ftests.py", line 27, 
> in __init__
> 
>    self[u'foo'] = Content()
> 
>  File 
> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/container/sample.py", line 
> 86, in __setitem__
> 
>    setitem(self, self.__data.__setitem__, key, object)
> 
>  File 
> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/container/contained.py", 
> line 593, in setitem
> 
>    notify(event)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/event/__init__.py", line 
> 23, in notify
> 
>    subscriber(event)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/component/event.py", 
> line 26, in dispatch
> 
>    for ignored in zope.component.subscribers(event, None):
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/component/_api.py", line 
> 130, in subscribers
> 
>    return sitemanager.subscribers(objects, interface)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/component/registry.py", 
> line 290, in subscribers
> 
>    return self.adapters.subscribers(objects, provided)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/interface/adapter.py", 
> line 535, in subscribers
> 
>    subscription(*objects)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/component/event.py", 
> line 33, in objectEventNotify
> 
>    adapters = zope.component.subscribers((event.object, event), None)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/component/_api.py", line 
> 130, in subscribers
> 
>    return sitemanager.subscribers(objects, interface)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/component/registry.py", 
> line 290, in subscribers
> 
>    return self.adapters.subscribers(objects, provided)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/interface/adapter.py", 
> line 535, in subscribers
> 
>    subscription(*objects)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/app/intid/__init__.py", 
> line 163, in addIntIdSubscriber
> 
>    key = IKeyReference(ob, None)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/app/component/hooks.py", 
> line 96, in adapter_hook
> 
>    return siteinfo.adapter_hook(interface, object, name, default)
> 
>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/security/adapter.py", 
> line 88, in __call__
> 
>    adapter = self.factory(*args)
> 
>  File 
> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/keyreference/persistent.py", 
> line 41, in __init__
> 
>    raise zope.app.keyreference.interfaces.NotYet(object)
> 
> NotYet: <myproduct.ftests.MyContent object at 0xb474982c>
> 
> 
> 
> Jürgen Kartnaller wrote:
>> Hi Tom.
>>
>> The NotYet exception tells you, that the object you (or in this case 
>> the IntId utility) want to get a key refence for is not "Not Yet" 
>> connected to a database.
>>
>> Your specific case is reported here : 
>> http://zope.org/Collectors/Zope3-dev/463
>>
>> Jürgen
>>
>> Tom Gross wrote:
>>> Here is the traceback:
>>>
>>> Error in test test_withoutintids 
>>> (myproduct.ftests.test_wf.WorkflowTestCase)
>>> Traceback (most recent call last):
>>>  File "/usr/lib/python2.4/unittest.py", line 260, in run
>>>    testMethod()
>>>  File "/mnt/zope/ldev/var/zope/lib/python/myproduct/ftests.py", line 
>>> 20, in test_withoutintids
>>>    basic='mgr:mgrpw')
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/testing/functional.py", 
>>> line 357, in publish
>>>    publish(request, handle_errors=handle_errors)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/publisher/publish.py", line 
>>> 133, in publish
>>>    result = publication.callObject(request, obj)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/publication/zopepublication.py", 
>>> line 161, in callObject
>>>    return mapply(ob, request.getPositionalArguments(), request)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/publisher/publish.py", line 
>>> 108, in mapply
>>>    return debug_call(obj, args)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/publisher/publish.py", line 
>>> 114, in debug_call
>>>    return obj(*args)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/container/browser/adding.py", 
>>> line 142, in action
>>>    content = factory()
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/component/factory.py", line 
>>> 37, in __call__
>>>    return self._callable(*args, **kw)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/workflow/stateful/definition.py", 
>>> line 115, in __init__
>>>    self.__states[self.getInitialStateName()] = initial
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/workflow/definition.py", 
>>> line 87, in __setitem__
>>>    setitem(self, self.__data.__setitem__, name, object)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/container/contained.py", 
>>> line 593, in setitem
>>>    notify(event)
>>>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/event/__init__.py", 
>>> line 23, in notify
>>>    subscriber(event)
>>>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/component/event.py", 
>>> line 26, in dispatch
>>>    for ignored in zope.component.subscribers(event, None):
>>>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/component/_api.py", 
>>> line 130, in subscribers
>>>    return sitemanager.subscribers(objects, interface)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/component/registry.py", 
>>> line 290, in subscribers
>>>    return self.adapters.subscribers(objects, provided)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/interface/adapter.py", line 
>>> 535, in subscribers
>>>    subscription(*objects)
>>>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/component/event.py", 
>>> line 33, in objectEventNotify
>>>    adapters = zope.component.subscribers((event.object, event), None)
>>>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/component/_api.py", 
>>> line 130, in subscribers
>>>    return sitemanager.subscribers(objects, interface)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/component/registry.py", 
>>> line 290, in subscribers
>>>    return self.adapters.subscribers(objects, provided)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/interface/adapter.py", line 
>>> 535, in subscribers
>>>    subscription(*objects)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/intid/__init__.py", 
>>> line 163, in addIntIdSubscriber
>>>    key = IKeyReference(ob, None)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/component/hooks.py", 
>>> line 96, in adapter_hook
>>>    return siteinfo.adapter_hook(interface, object, name, default)
>>>  File "/mnt/zope/ldev/app/zope3/lib/python/zope/security/adapter.py", 
>>> line 88, in __call__
>>>    adapter = self.factory(*args)
>>>  File 
>>> "/mnt/zope/ldev/app/zope3/lib/python/zope/app/keyreference/persistent.py", 
>>> line 41, in __init__
>>>    raise zope.app.keyreference.interfaces.NotYet(object)
>>> NotYet: <zope.app.workflow.stateful.definition.State object at 
>>> 0xb47b786c>
>>>
>>>
>>> Philipp von Weitershausen wrote:
>>>> Tom Gross wrote:
>>>>>    I have a site with some utilities. One is a 
>>>>> zope.app.intid.UniqueIdUtility, which seems to be the cause of the 
>>>>> problem (see the test). A NotYet-Exception is raised, when I try to 
>>>>> add a zope.app.workflow.StatefulProcessDefinition-object to the 
>>>>> container with the utilities. I can add a 
>>>>> StatefulProcessDefinition-object to an empty container. I'm using 
>>>>> Zope 3.3 and Python 2.4.3.
>>>>
>>>> Got a traceback handy? (Remember: any error description should 
>>>> *always be acocmpanied by a traceback, otherwise it's not very useful)
>>>>
>>>> I have a suspicion as to what this is about (something's missing a 
>>>> __parent__ attribute), but I'd like to see the traceback first for 
>>>> confirmation. Yes, I could execute the test somehow, but that would 
>>>> take me a couple of minutes on my slow machine, and you already know 
>>>> what the error is, so you can just as well describe it to me in 
>>>> detail :). Note that providing a test is highly appreciated as it 
>>>> helps with the reproduceability of the problem...
>>>>
>>>>
>>>
>>
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