Have you thought of using Expando Models http://code.google.com/appengine/docs/datastore/entitiesandmodels.html#Expando_Models Put the properties all objects need as db.xxProperty's and the extra fields for the subclasses as expando properties. Add 1 property to the 'base-class' to determine what type of subclass it is, to determine which extra properties the object has, or you might try the obj.getattr() method.
2008/12/10 yejun <[EMAIL PROTECTED]>: > > Any indexable property will cost a couple million cpu cycle when you > put a new entity. You should set them to text or blob to avoid index > penalty. --~--~---------~--~----~------------~-------~--~----~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
