PagedQuery is a paging abstraction that is applied to appengine Query or GQLQuery objects.

A library designed to make it easy to use Google App Engine from Clojure

Maven sample project shows how to use the App Engine App Identity API to connect to authenticate to Google Storage API using OAuth2. Good sample POM for projects using google-api-java-client to connect to various Google APIs.

"Leverage the open source Restlet Framework and its unique Java API available in six consistent editions: Java SE, Java EE, OSGi, GAE, Android and GWT!"

Code for tracking server-side activities on Google App Engine.

It is a single file: ga.py
Call track_page_view(path) to send the request to Google Analytics.

Offers conveniently packaged POST and GET methods based on HttpURLConnection. Main value add is that they take care of authenticating with App Engine using a Google account that's already on your device.

"Slim3 is a full-stack MVC framework optimized for Google App Engine/Java, and you can use Slim3 as just a datastore framework, too." Claims to support global transactions between multiple entity groups.

the book...

the book

ze book

Google Application Engine is a darken profession technology that lets you separate scheme applications that are cushy to physique and reassert as substantially as existence scaled and load-balanced automatically. To physique engrossing and mutual scheme applications developers are motion to Java. However, antiquity and deploying ascendible scheme applications using Google Web Toolkit and Google App Engine for Java crapper be hard modify to developers. ...

arghh!

Twig is an object persistence interface built on Google App Engine's low-level datastore which overcomes many of JDO-GAEs limitations including full support for inheritance, polymorphism and generic types. You can easily configure, modify or extend Twigs behaviour by implementing your own strategies or overriding extension points in pure Java code.

guardian roulette

I'm pleased to announce the release of bulkupdate, an unoriginally-named library for the App Engine Python runtime that facilitates doing bulk operations on datastore data. With bulkupdate, simple operations like bulk re-puts and bulk deletes are trivial, while more complex operations like schema transitions or even emailing all your users become much simpler.

Easy Google App Engine’s URLFetch service jruby library
Overview
Easy access to Google’s App Engine URLFetch Service. You need something like this if you want to use NET:HTTP things, cause NET:HTTP is NOT supported by GAE.

GAELucene is a lucene component that can help you to run search applications on Google AppEngine.

JDO and JPA code samples

The Web Sockets API enables web browsers to maintain a bi-directional communication channel to a server, which in turn makes implementing real-time web sites about 1000% easier than it is today.

Currently, the only reasonable technical facility available to browsers to communicate to web servers is XMLHttpRequest. Sites that update in real-time like FriendFeed use a number of horrible hacks on top of XMLHttpRequest like long-polling to get data in real-time. (If you are interested, Tornado ships with a chat demo application that uses this long-polling technique - here is the JavaScript in all its hacky glory).

Web Sockets support a much simpler interface that enables both the client and the server send messages to each other asynchronously

We have Rails 3.0.pre and Rails 2.3.5 running on App Engine. Rubygems has been disabled, but we use gem bundler to package gems. We are also using DataMapper instead of ActiveRecord. There are some issues with both these options, but we expect they will be resolved shortly. Special thanks to Yehuda Katz and Sasaki Takeru for making this happen!

See the Rails 2 Primer for more information.