• Android - With the continued momentum and growth of the platform, we would like to continue the conversation with you at Developer Day. We will feature sessions on Android performance, mobile user experience and best practices on building apps, and we will also deep dive on a new feature, Cloud to Device Messaging (C2DM).


• Chrome & HTML5 - We will discuss how to build an app for the Chrome Web Store and how to improve its development and performance. We’ll show which aspects of HTML5, Chrome Developer Tools and Native Client can be most useful to you. Finally, we will cover everything auth-related to show you when and where to use various authentication tools and how they integrate with our APIs and products.


• Cloud Platform - Building off of our series of announcements at Google I/O, we will feature sessions on App Engine, App Engine for Business, Spring integration, Google Web Toolkit, Google Storage for Developers, BigQuery and Prediction API. Be prepared for code samples, how to optimize performance and a glimpse into what else is on our roadmap.

• Sao Paulo, Brazil - Mario Queiroz, VP Product Management


• Munich, Germany - Dr. Wieland Holfelder, Engineering Director


• Moscow, Russia - Dr. Gene Sokolov, Head of Moscow Engineering

• Sep 28: Tokyo, Japan


• Oct 29: Sao Paulo, Brazil


• Nov 9: Munich, Germany


• Nov 12: Moscow, Russia


• Nov 16: Prague, Czech Republic

• DevFest will be on tour through cities across Asia, Europe and Latin America. See the full schedule here.


• Check for community-run Google Technology User Group meetups near you!

• Open source Google Wave: Building your own wave provider - Learn how to get your own Wave server running using the currently open-sourced demos, and watch a demo of SAP Streamwork, Novell Pulse, and Google Wave all federating together.


• Making smart & scalable Wave robots - Learn how to take advantage of version 2 of the Robots API to build more sophisticated robots, and watch a demo of the Go bot - the first example of a robot running on a non-App Engine server, written in the new open-source programming language.


• Waving across the web - Learn how to use the APIs outside of Google Wave, including embedding waves for discussions on your site, integrating with the WaveThis service, and using the data APIs to build notifiers and alternative clients.


• Google Wave Media APIs - Attachments can surf too!: Learn how to use the new media/attachments API for both retrieving and creating attachments, and watch demos of robots that turn waves into Powerpoint presentations -- and back!


• Google Wave and the enterprise environment - Learn how different enterprises are using Wave today, see a walkthrough of Mr. Release, an extension built for our own software development enterprise use case, and watch a demo of SAP Streamwork, an enterprise collaboration software.


• Google Wave API design principles - Anatomy of a great extension: Learn how to build gadgets and robots that are user-friendly and collaborative, and watch a demo of ProcessWave, a collaborative UML editor.


• Fireside chat with the Google Wave team - Watch our answers to questions about integration between Google Wave and other products, future features for robots and gadgets, and much more.

import java.util.List;
import javax.jdo.PersistenceManager;
import javax.jdo.Query;

(...)

public static List searchGreeting(String query) {

  // let's clean up the input
  query = ( query != null ? query.toLowerCase() : "").trim();

  PersistenceManager pm = PMF.get().getPersistenceManager();
  Query q = pm.newQuery(Greeting.class);

  // set the filter and params
  q.setFilter("content >= :1 && content < :2");

  // run query with param values and return results
  return (List) q.execute(query, (query + "\ufffd"));

}

q.setFilter("name >= :1 && name < :2");

return (List) q.execute(query, (query + "\ufffd"));

• “Newness” to Google App Engine's concepts of GQL, lack of aggregate queries, denormalized schema.
• Lack of transaction support: commit or rollback on distributed storage and read consistency within transaction scope.
• Relying only on the cloud: not being able to run the same application on standard infrastructure inside your company.

• It provides a modeling environment to build business processes and rules, datamodel using a familiar process design and spreadsheet like interface. The application that you build on this interface can be deployed on Google App Engine in a single click.
• It enhances the persistence layer of Google App Engine to support transactions and read consistency on BigTable. It makes it so transparent that there is absolutely no difference for you to build applications on BigTable or on relational databases.
• If you are a solution provider building business applications today, you may not know if all your customers will accept running applications on the cloud. Some might expect that applications run on their data center. With OrangeScape, you can build it once and run it on both - cloud and data center.

• Instead of having to search, you can just look at your phone and see your local hotspots, events of interest, and recommended bargains.
• Users can customize Aloqa and decide which Aloqa "channels" they want from our "channel store".
• Using our API, publishers can create a channel and use our universal inbox for context relevant notifications, be it for biking trails, or popular bars where Pittsburgh Steelers fans congregate.

This integration approach is the new, lightweight generation of SOA. We can expose a service’s data as a JSON object through a REST API. In our use case, we combined the existing Google Analytics data and created two new services: one to take the downloads data directly from our project forge sites and another created in groovy to list our press releases. We were able to quickly create this application online using the GWT-based eXo web IDE.

A web IDE means you no longer have to build, test, package and deploy the application. Within this environment, you can use REST APIs using Groovy and OpenSocial gadgets, and deployment options are plenty, whether as a gadget in the platform dashboard, in another OpenSocial container such as iGoogle, and even in mobile apps like the ones we built for Android and the iPhone.

Building and distributing applications has become a lot easier, and the features formerly associated with the consumer web are going to drastically improve the usefulness and usability of enterprise applications.

Posted by Benjamin Mestrallet, CEO of eXo