[GWT] Table with pagination and one sortable column

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 : http://code.google.com/intl/en/webtoolkit/doc/latest/DevGuideUiCellTable.html I basically just added the SimplePage element to handle pagination : SimplePager pager = new SimplePager(); pager.setDisplay(table); Source : https://github.com/longbeach/MyFirstCellTable Demo … Read more

How to rollback a transaction in GAE

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& 409 Conflict Another transaction by user xxxxx is already in progress for this app and major version. That … Read more

I am not a GAE virgin anymore

Well, I do not have much spare time to take a deep look at all the new technologies that come around but i always try to check at least the minimum. Google App Engine offers a nice tutorial : http://code.google.com/appengine/docs/java/gettingstarted/ I did not run into any major problem. The result is a very basic and … Read more