GWT with JDO problem

Question

I just start playing with GWT I\'m having a really hard time to make GWT + JAVA + JDO + Google AppEngine working with DataStore. I was trying to follow different tutorial bu

Answer 1

You can use the Key class in GWT code by adding these additional jar files:

http://www.resmarksystems.com/code/

• appengine-utils-client-1.0.jar
• appengine-utils-server-1.0.jar

This basically gives the GWT compiler a GWT-friendly version of the Key and other AppEngine classes. (like Text, Blob and User..)

To use:

• Add the appengine-utils-client-1.0.jar anywhere in your build path.
• Put the appengine-utils-server-1.0.jar in your WEB-INF/lib folder.
• Add the following to your GWT module:
  • < inherits name="com.resmarksystems.AppEngineDataTypes"/>