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Getting rid of orphaned AT content instances

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Ken Winter () Getting rid of orphaned AT content instances
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I think some instances of an AT content type that I removed are still persisting in my ZODB.  I'm wondering if Zope or Plone has any kind of garbage collector that will get rid of them.

Some details:

The name of the deleted content type is "rdb_my_contact_info".

The issue first arose when I tried to export/import the Plone site that used to contain "rdb_my_contact_info" from one Zope instance to another.  I got the error message 'No module named rdb_my_contact_info'.

So I did everything I could to expunge all references to "rdb_my_contact_info" from my site: reinstalling, deleting files, rebuilding catalogs, etc.  

Then I ran grep on the whole Plone Products directory in my file system.  It confirmed that "rdb_my_contact_info" was gone from there.  However, when I grep'd the ZODB file (Data.fs) and the export file I had generated (export.zexp), I found that they contained, respectively, 11 and 3 occurrences of "rdb_my_contact_info".

Here's a file with the grep output from the export file: my_contact_info_in_groups_zexp.txt.  The file shows the grep command, then the output.  To make this binary file more legible, I stuck a row of **** before each occurrence of "rdb_my_contact_info".  The other readable names in (the nearly identical) contexts of these 3 occurrences are mostly the names of fields in the "rdb_my_contact_info" content type's schema.

The Data.fs grep report looks similar; the extra 8 occurrences of "rdb_my_contact_info" seem to be some subordinate content objects (which were linked into "rdb_my_contact_info" by DatagridFields).

The "Find" tabs inside of my ZMI are of no use in locating these references.  Searching the whole Zope instance for "rdb_my_contact_info", they find nothing.

The reason I suspect these references to "rdb_my_contact_info" are orphaned instances (rather than some other kind of garbage) is that, when I go in the ZMI to archetype_tool/UIDs tab (hoping to rebuild this list), I get "AttributeError: 'NoneType' object has no attribute 'title_or_id'" (see full traceback below).

By the way, I can get around the import error by temporarily reinstalling the "rdb_my_contact_info" content type, doing the export and import, and then deleting "rdb_my_contact_info" again (in both Zope instances).  But this is not a comfortable workaround as my project moves toward production.

Can you help me find and eliminate these objects, or whatever they are?

~ TIA
~ Ken

P.S. The traceback:  

2009-01-05T14:26:01 ERROR Zope.SiteErrorLog http://c.05.luxor.highspeedrails.com/groups/archetype_tool/manage_uids
Traceback (innermost last):
  Module ZPublisher.Publish, line 115, in publish
  Module ZPublisher.mapply, line 88, in mapply
  Module ZPublisher.Publish, line 41, in call_object
  Module Shared.DC.Scripts.Bindings, line 311, in __call__
  Module Shared.DC.Scripts.Bindings, line 348, in _bindAndExec
  Module Products.PageTemplates.PageTemplateFile, line 113, in _exec
  Module Products.PageTemplates.PageTemplate, line 104, in pt_render
   - <PageTemplateFile at /groups/archetype_tool/manage_uids>
  Module TAL.TALInterpreter, line 238, in __call__
  Module TAL.TALInterpreter, line 281, in interpret
  Module TAL.TALInterpreter, line 691, in do_loop_tal
  Module TAL.TALInterpreter, line 281, in interpret
  Module TAL.TALInterpreter, line 715, in do_condition
  Module TAL.TALInterpreter, line 281, in interpret
  Module TAL.TALInterpreter, line 457, in do_optTag_tal
  Module TAL.TALInterpreter, line 442, in do_optTag
  Module TAL.TALInterpreter, line 437, in no_tag
  Module TAL.TALInterpreter, line 281, in interpret
  Module TAL.TALInterpreter, line 531, in do_insertText_tal
  Module Products.PageTemplates.TALES, line 227, in evaluateText
  Module Products.PageTemplates.TALES, line 221, in evaluate
   - URL: manage_uids
   - Line 31, Column 8
   - Expression: <PythonExpr object.getObject().title_or_id()>
   - Names:
      {'container': <ArchetypeTool at /groups/archetype_tool>,
       'context': <ArchetypeTool at /groups/archetype_tool>,
       'default': <Products.PageTemplates.TALES.Default instance at 0x8f01b0c>,
       'here': <ArchetypeTool at /groups/archetype_tool>,
       'loop': <Products.PageTemplates.TALES.SafeMapping object at 0x10183ccc>,
       'modules': <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter instance at 0x8f6e04c>,
       'nothing': None,
       'options': {'args': ()},
       'repeat': <Products.PageTemplates.TALES.SafeMapping object at 0x10183ccc>,
       'request': <HTTPRequest, URL=http://c.05.luxor.highspeedrails.com/groups/archetype_tool/manage_uids>,
       'root': <Application at >,
       'template': <PageTemplateFile at /groups/archetype_tool/manage_uids>,
       'traverse_subpath': [],
       'user': <PropertiedUser 'zadmin'>}
  Module Products.PageTemplates.ZRPythonExpr, line 47, in __call__
   - __traceback_info__: object.getObject().title_or_id()
  Module Python expression "object.getObject().title_or_id()", line 1, in <expression>
  Module AccessControl.ImplPython, line 688, in guarded_getattr
AttributeError: 'NoneType' object has no attribute 'title_or_id'
Alexander Limi () Re: Getting rid of orphaned AT content instances
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You have tried using the Find tab in the ZMI and looing for this content  
type?

On Tue, 06 Jan 2009 12:31:36 -0800, Ken Winter  
<[hidden email]> wrote:

>
> I think some instances of an AT content type that I removed are still
> persisting in my ZODB.  I'm wondering if Zope or Plone has any kind of
> garbage collector that will get rid of them.
>
> Some details:
>
> The name of the deleted content type is "rdb_my_contact_info".
>
> The issue first arose when I tried to export/import the Plone site that  
> used
> to contain "rdb_my_contact_info" from one Zope instance to another.  I  
> got
> the error message 'No module named rdb_my_contact_info'.
>
> So I did everything I could to expunge all references to
> "rdb_my_contact_info" from my site: reinstalling, deleting files,  
> rebuilding
> catalogs, etc.
>
> Then I ran grep on the whole Plone Products directory in my file  
> system.  It
> confirmed that "rdb_my_contact_info" was gone from there.  However, when  
> I
> grep'd the ZODB file (Data.fs) and the export file I had generated
> (export.zexp), I found that they contained, respectively, 11 and 3
> occurrences of "rdb_my_contact_info".
>
> Here's a file with the grep output from the export file:
> http://n2.nabble.com/file/n2119234/my_contact_info_in_groups_zexp.txt
> my_contact_info_in_groups_zexp.txt .  The file shows the grep command,  
> then
> the output.  To make this binary file more legible, I stuck a row of ****
> before each occurrence of "rdb_my_contact_info".  The other readable  
> names
> in (the nearly identical) contexts of these 3 occurrences are mostly the
> names of fields in the "rdb_my_contact_info" content type's schema.
>
> The Data.fs grep report looks similar; the extra 8 occurrences of
> "rdb_my_contact_info" seem to be some subordinate content objects (which
> were linked into "rdb_my_contact_info" by DatagridFields).
>
> The "Find" tabs inside of my ZMI are of no use in locating these  
> references.
> Searching the whole Zope instance for "rdb_my_contact_info", they find
> nothing.
>
> The reason I suspect these references to "rdb_my_contact_info" are  
> orphaned
> instances (rather than some other kind of garbage) is that, when I go in  
> the
> ZMI to archetype_tool/UIDs tab (hoping to rebuild this list), I get
> "AttributeError: 'NoneType' object has no attribute 'title_or_id'" (see  
> full
> traceback below).
>
> By the way, I can get around the import error by temporarily reinstalling
> the "rdb_my_contact_info" content type, doing the export and import, and
> then deleting "rdb_my_contact_info" again (in both Zope instances).  But
> this is not a comfortable workaround as my project moves toward  
> production.
>
> Can you help me find and eliminate these objects, or whatever they are?
>
> ~ TIA
> ~ Ken
>
> P.S. The traceback:
>
> 2009-01-05T14:26:01 ERROR Zope.SiteErrorLog
> http://c.05.luxor.highspeedrails.com/groups/archetype_tool/manage_uids
> Traceback (innermost last):
>   Module ZPublisher.Publish, line 115, in publish
>   Module ZPublisher.mapply, line 88, in mapply
>   Module ZPublisher.Publish, line 41, in call_object
>   Module Shared.DC.Scripts.Bindings, line 311, in __call__
>   Module Shared.DC.Scripts.Bindings, line 348, in _bindAndExec
>   Module Products.PageTemplates.PageTemplateFile, line 113, in _exec
>   Module Products.PageTemplates.PageTemplate, line 104, in pt_render
>    - <PageTemplateFile at /groups/archetype_tool/manage_uids>
>   Module TAL.TALInterpreter, line 238, in __call__
>   Module TAL.TALInterpreter, line 281, in interpret
>   Module TAL.TALInterpreter, line 691, in do_loop_tal
>   Module TAL.TALInterpreter, line 281, in interpret
>   Module TAL.TALInterpreter, line 715, in do_condition
>   Module TAL.TALInterpreter, line 281, in interpret
>   Module TAL.TALInterpreter, line 457, in do_optTag_tal
>   Module TAL.TALInterpreter, line 442, in do_optTag
>   Module TAL.TALInterpreter, line 437, in no_tag
>   Module TAL.TALInterpreter, line 281, in interpret
>   Module TAL.TALInterpreter, line 531, in do_insertText_tal
>   Module Products.PageTemplates.TALES, line 227, in evaluateText
>   Module Products.PageTemplates.TALES, line 221, in evaluate
>    - URL: manage_uids
>    - Line 31, Column 8
>    - Expression: <PythonExpr object.getObject().title_or_id()>
>    - Names:
>       {'container': <ArchetypeTool at /groups/archetype_tool>,
>        'context': <ArchetypeTool at /groups/archetype_tool>,
>        'default': <Products.PageTemplates.TALES.Default instance at
> 0x8f01b0c>,
>        'here': <ArchetypeTool at /groups/archetype_tool>,
>        'loop': <Products.PageTemplates.TALES.SafeMapping object at
> 0x10183ccc>,
>        'modules':  
> <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter
> instance at 0x8f6e04c>,
>        'nothing': None,
>        'options': {'args': ()},
>        'repeat': <Products.PageTemplates.TALES.SafeMapping object at
> 0x10183ccc>,
>        'request': <HTTPRequest,
> URL=http://c.05.luxor.highspeedrails.com/groups/archetype_tool/manage_uids>,
>        'root': <Application at >,
>        'template': <PageTemplateFile at  
> /groups/archetype_tool/manage_uids>,
>        'traverse_subpath': [],
>        'user': <PropertiedUser 'zadmin'>}
>   Module Products.PageTemplates.ZRPythonExpr, line 47, in __call__
>    - __traceback_info__: object.getObject().title_or_id()
>   Module Python expression "object.getObject().title_or_id()", line 1, in
> <expression>
>   Module AccessControl.ImplPython, line 688, in guarded_getattr
> AttributeError: 'NoneType' object has no attribute 'title_or_id'
>



--
Alexander Limi · http://limi.net


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