I just added a very basic GWT project to my github account to display a table with pagination and one sortable column.
The code is mostly based on the official GWT tutorial :
I basically just added the SimplePage element to handle pagination :
SimplePager pager = new SimplePager();
This has nothing to do with JPA.
I was trying to deploy a GWT webapp to GAE when I suddenly got an error.
As a remedy, i got the message :
"java.io.IOException: Error posting to URL: https://appengine.google.com/api/appversion/create?app_id=tableaupagination&version=2&
Another transaction by user xxxxx is already in progress for this app and major version. That user can undo the transaction with appcfg.py's "rollback" command."
After digging into Google a bit, I found that the way to launch that rollback command under Windows is the following :
1) Figure out where the Google App Engine Java SDK directory is.
In my case, it’s under the Eclipse plugins directory :
The bin folder contains the appcfg.cmd command.
2) Under a DOS command prompt, go to the workspace folder of your project and launch the following command :
"D:\Dev\eclipse-jee-helios-SR1-win32\plugins\com.google.appengine.eclipse.sdkbundle.1.4.2_1.4.2.v201102111811\appengine-java-sdk-1.4.2\bin\appcfg" rollback war
After that, you can try to deploy the app again and it should work.
Here is a first quick and simple tutorial on how to develop and deploy your very first GWT web application to Google App Engine.
Google Web Toolkit plugin for Eclipse
A Google App Engine account + GMAIL account
So here are the steps :
I finally added the code for the book “Les EJB 3 (avec Struts 2, JSF 2, JasperReports 3, Flex 3)” to GitHub.
To grab it, you have 2 options :
1) use GIT and type :
git clone git://github.com/longbeach/VenteEnLigne.git
2) use SVN and type :
svn co http://svn.github.com/longbeach/VenteEnLigne
As a matter of fact, and surprising as it might sound, you can use SVN to grab code from GitHub 🙂