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Folder implementation changes

by Plone Documentation Team — last modified Oct 14, 2010 09:31 AM
Large Folder and Folder content types have been unified in Plone 4. This may impact your add-on product code.

Plone 4 unifies two different folder implementations (Folder and Large Folder) to one implementation. There are internal changes to ATFolder base classes (Archetypes folder implementation). This change simplifies code, API and makes folders scale better.

plone.app.folder is the new package providing the folder code. plone.app.folder provides a migration view which is run during Plone 4 upgrade for all ATFolder based content.

For more information see this discussion.

Performance impact explained.