Article: “We Crunched 1 Billion Java Logged Errors – Here’s What Causes 97% of Them”

A friend shared this article and I find it informative. Here are my notes: Steve Burton explained the challenge for engineers to troubleshoot production issues when the logs are filled with a large number of non-critical error messages. Not only this made troubleshooting of critical errors harder, it also has the following additional costs: “Disk storage to […]

HowTo: Setup GWT remote logging

I find the official documentation on remote logging wasn’t complete. Here are my notes based on various web sites I visited (here, here, and here). Hope this helps! App.gwt.xml You should add the inherits statement below. You should be able to adjust the log level to any of the following: ALL, FINEST, FINER, FINE, CONFIG, INFO, […]

Adding print feature to a GWT app

Enable print: I was able to add print feature to a GWT app by using gwt-print-it library. I used last example in the documentation to get the printing to work (see included code fragment below). Print.it(“<!DOCTYPE HTML PUBLIC ‘-//W3C//DTD HTML 4.01//EN’ ‘http://www.w3.org/TR/html4/strict.dtd’>”, “<link rel=StyleSheet type=text/css media=paper href=/paperStyle.css>”, RootPanel.get(“myId”)); I had to use absolute URLs instead of […]

Debug JBoss with Eclipse

I found a need to debug JBoss with Eclipse. A search on google led me to ths page. I had to tweak a bit to get my local instance to work. For example, I had to change the quote character from ” to “. JAVA_OPTS=”-Xdebug -Xnoagent -Xrunjdwp:transport=dt_socket,address=8787,server=y,suspend=n $JAVA_OPTS” After that, JBOSS was able to load […]

History and tab panel in GWT

I came across this tutorial and found it useful! 🙂

Misc issues resolved

While trying to setup JMS code, I encountered a few small issues and resolved them. Here are my notes: Where in the world is ChapterExRepository? Here it is. According to the following thread, one way to include log4j xml config file is to include the path to the file in the classpath.

SSO enable a web app

Yesterday, I finally SSO enabled a second web application using CAS (specifically CAS Java client) The process was relatively similar to the steps documented in the client page.

context-param and init-param in web.xml

I found a need to retrieve a configuration value in web.xml and found the following post useful.

Create a WAR file for a GWT application

After I was so spoiled by GWT/Eclipse’s streamlined way of deploying a GWT application to the embedded server or Google App Engine, I was annoyed by how little support it has for other application servers. Fortunately, I was able to semi-automatically generate a WAR file for manual deployment on a remote server by following this […]

GWT SimplePager

It’s unfortunate that my initial experience with GWT’s SimplePager wasn’t very positive. The paging behaviour toward end of the list showed the following: For the last page, pager would attempt to request record count at last index + page size. This would cause pager to go index array out of bound. i.e. Let’s say you […]

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