First off, I come from a RDBMS/SQL/C++/Java/Python background and I\'m a newbie to Gaelyk, the Google API and the Google datastore.
I have seen many articles and questions about how to implement a unique constraint in appengine, but I actually didn\'t found any explanation about why this feature is not presen开发者_开发知识库t.
I\'m building an client/server-app where I want to sync data. I\'m thinking about including the largest key from the local client database in the query so the 开发者_如何学Pythonserver can fetch all e
When i make a meta query to ret开发者_StackOverflow中文版rieve entity properties (columns), i retrieve only this:
I\'m trying to understand when to use an entity \"parent\" on GAE.Is this only useful for querying (ie get all 开发者_开发知识库the Foo objects where the parent == someObj) or does the child have acce
The docs says that ancestor will apply a filter of given ancestor being somewhere in the ancestry tree.
I\'m trying to write a query which will identify and return all root entities (i.e. entities which have no ancestor). I initially tried calling Query.setAncestor(null) but later found out from the dat
I\'m trying to verify my site with a domain in appspot.com but i use the authentication whit google account when the web master central try
The documentation about datastore config objects confuses me: \"A configuration object can be used any number of times. You must开发者_如何学C create a separate configuration object for each datasto
I create a custom db.Property subclass: class PropertyFoo(db.StringProperty): def validate(self, value):
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