Marzia, The problem is occurs when data for a class that is derived from a class that is derived from polymodel class.
The problem is bulkloader looks for the class in _kind_map[1], but it is not available in _kind_map. See comment[2] in polymodel class, why subclasses are not added to _kind_map, Unless the class is a root class or PolyModel itself, it is not inserted in to the kind-map like other models. However, all polymorphic classes, are inserted in to the class-map which maps the class-key to implementation. This class key is consulted using the polymorphic instances discriminator (the 'class' property of the entity) when loading from the datastore. Hope this helps in understanding the issue. [1] http://code.google.com/p/googleappengine/source/browse/trunk/google/appengine/ext/db/__init__.py#215 [2] http://code.google.com/p/googleappengine/source/browse/trunk/google/appengine/ext/db/polymodel.py#103 Thanks Saravana On Fri, Mar 13, 2009 at 3:00 PM, Marzia Niccolai <ma...@google.com> wrote: > > Hi, > > Can you also post the code from the handler? > > Thanks, > Marzia > > On Thu, Mar 12, 2009 at 8:30 PM, Webysther <webyst...@gmail.com> wrote: >> >> 1.Create entity >> >> class Contact(polymodel.PolyModel): >> phone_number = db.PhoneNumberProperty() >> address = db.PostalAddressProperty() >> >> Upload data... >> >> 2.Create entity >> >> class Person(Contact): >> first_name = db.StringProperty() >> last_name = db.StringProperty() >> mobile_number = db.PhoneNumberProperty() >> >> Upload data, opss!!! Error... >> >> Traceback (most recent call last): >> File "C:\Program Files (x86)\Google\google_appengine\bulkloader.py", >> line >> 60, in <module> >> run_file(__file__, globals()) >> File "C:\Program Files (x86)\Google\google_appengine\bulkloader.py", >> line >> 57, in run_file >> execfile(script_path, globals_) >> File "C:\Program Files >> (x86)\Google\google_appengine\google\appengine\tools\bulkloader.py", >> line >> 2588, in <module> >> sys.exit(main(sys.argv)) >> File "C:\Program Files >> (x86)\Google\google_appengine\google\appengine\tools\bulkloader.py", >> line >> 2584, in main >> auth_domain=auth_domain) >> File "C:\Program Files >> (x86)\Google\google_appengine\google\appengine\tools\bulkloader.py", >> line >> 2467, in _PerformBulkload >> LoadConfig(config_file) >> File "C:\Program Files >> (x86)\Google\google_appengine\google\appengine\tools\bulkloader.py", >> line >> 2376, in LoadConfig >> Loader.RegisterLoader(cls()) >> File "H:\projects\ibge\import\uf.py", line 10, in __init__ >> ('co_regiao', int) >> File "C:\Program Files >> (x86)\Google\google_appengine\google\appengine\tools\bulkloader.py", >> line >> 1880, in __init__ >> db.class_for_kind(kind) >> File "C:\Program Files >> (x86)\Google\google_appengine\google\appengine\ext\db\__init__.py", >> line >> 217, in class_for_kind >> raise KindError('No implementation for kind \'%s\'' % kind) >> google.appengine.ext.db.KindError: No implementation for kind 'Person' >> >> http://code.google.com/p/googleappengine/issues/detail?id=1133 >> >> Ideas? >> --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---