he3-appengine-lib

A collection of miscellaneous utilities and libraries, written in Python, for the Google App Engine.

Database

• Mappers
• ModelHygieneMapper: A App Engine Map Reduce mapper to create missing datastore properties and remove dangling reference property pointers.
• Paging
• PagedQuery: An easy way to add a paging abstraction to your Query and GQLQuery objects.
• PageLinks: A helper class to produce a series of page links in your tables
• Performing
• PrefetchingQuery: An easy way to lower the overhead of fetching reference properties across multiple entities.
• Properties
• UtcDateTimeProperty: a property for ensuring that all timezones stored as DateTime properties are forced to be Timezone aware coming in an out of the datastore.

Demonstrations

I've set aside an area in this project for demonstrations. These demonstrations might not be related to other parts of the library, just an area I can place applications and code I have created to learn or demonstrate a concept.

So far there is only one demonstration:

• Open Id: I wrote a quick application to see how Google App Engine support for open id works. You can see this application in action (for the moment) at http://he3-openidtest.appspot.com and you can find the code at demos/openid1

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