Start the appengine-tools gem

README.rdoc

-== dm-appengine
+Generate XML files required by App Engine for JRuby from a rackup file.
+This works from standard Ruby or JRuby, but you'll need the rack gem.         
 

[woodie, 2009/07/02 03:33:09]

Generate XML files required by App Engine for JRuby from a rackup file.
This works from standard Ruby or JRuby, but you'll need the rack gem.         

Configure your app from within the 'config.ru' file:

  AppEngine::Rack.app.configure( :application => 'simple', :version => 2 )

Now run xmlgen.rb and and your ready to go:

  ./genxml.rb

[ribrdb, 2009/07/02 22:32:15]

On 2009/07/02 03:33:09, mando.woodie wrote:
> Generate XML files required by App Engine for JRuby from a rackup file.
> This works from standard Ruby or JRuby, but you'll need the rack gem.         
> 
> Configure your app from within the 'config.ru' file:
> 
>   AppEngine::Rack.app.configure( :application => 'simple', :version => 2 )
> 
> Now run xmlgen.rb and and your ready to go:
> 
>   ./genxml.rb
> 

Done.

-A DataMapper adapter for the Google App Engine Datastore.
+Configure your app from within the 'config.ru' file:
 
-Currently this is pretty basic. There's no support for Parent entities,
-transactions, Blobs, or Links, for example. Any query supported by the
-Datastore should work. That means the like, regexp, and not operators are not
-supported. Or is only supported for fetching several entities by the Key.
+  AppEngine::Rack.app.configure( :application => 'simple', :version => 2 )
 
-== Bugs
+Now run xmlgen.rb and and your ready to go:
 
-- DataMapper likes to lazily load properties. The Datastore always sets and
-  returns all properties on an entity. If you have lazily loaded properties
-  strange things will happen (like properties potentially disappearing).
+  jruby -rubygems -e 'require "appengine-tools/genxml"'