I\'m trying to upload some records to my local data store using appcfg.py Only a small number of records are actually inserted and I get the following output (with a ton of errors):
bulkoader.yaml: transformers: - kind: ExampleModel connector: csv property_map: - property: __key__ 开发者_如何学Python
How d开发者_如何学编程oes the performance of db.get() compare with that of db.get_by_key_name()?get_by_key_name must compute the keys based on app, model, name and parent, so it should consume a (tiny
My understanding is that with GAE JPA support I cannot: @ManyToMany private Set<SSUser> contacts;
I\'m experimenting a bit with google app engine and the lack of a transaction di framework is missing. I\'m implementing it as good as I can, but I\'m hitting the same exception again and again:
If I have the google assigned key of an entity in my datastore, say ag1iYXRjaC1nZW5lcmljchcLEgxCYXRjaGVzTW9kZWwiBUpvYiAyDA, is there a way I can easily fetch the entity by this key? I\'ve tried using
I\'m using GAE/Java with Objectify, and I\'m trying to find the fastest way to check if a given object exists in the datastore, given the key. W开发者_开发百科hat I\'m doing right now is .get(key) wit
I want to retrieve a file form a URL like http://www.abc.com/files/file.pdf and store in the blobstore... how 开发者_如何学编程do I do this?
I\'m looking at the documentation for using cursors. Are these forward-only cursors - we can\'t page backwards?:
I have a model containing ranges of IP addresses, similar to this: class Country(db.Model): begin_ipnum = db.IntegerProperty()
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