iPhone-json
A Ruby on Rails app running on Google App Engine with DataMapper to serve JSON data to an iPhone and Android App
Types from DataMapper & AppEngine datastore
pp (DataMapper::Property::PRIMITIVES + DataMapper::Types.constants.map{|c| DataMapper::Types.const_get(c)}. select{|t|t.respond_to? :primitive}).map {|c| c.to_s.split('::')[-1]}.uniq.sort
["AncestorKey", "AppEngineNativeType", "AppEngineStringType", "BigDecimal", "Blob", "Boolean", "ByteString", "Category", "Class", "Date", "DateTime", "Discriminator", "Email", "Float", "Integer", "Key", "Link", "List", "Object", "ParanoidBoolean", "ParanoidDateTime", "PhoneNumber", "PostalAddress", "Rating", "Serial", "String", "Text", "Time", "TrueClass"]