JBoss Drools – Business Rules Management System/Guvnor

I was playing around with the web interface of the JBoss Drools engine called Business Rules Management System or BRMS till version 4.0.7. In the subsequent versions i.e 5.0 it is called Guvnor. While trying to validate the newly defined business rule, I got the following error:

java.lang.ClassFormatError: Incompatible magic value 1885430635 in class file

A quick search on the internet revealed the answer. Please ensure that your java class jar files contain only .class files and not source code. Weird yes, but that’s how it is!

JBoss Drools – Defining business rules

The last two articles focused on some of the current projects that I was working on. So after kick starting Drools(4.0.7), I lost track and wrote some posts on JBoss clustering. Interesting as they were, I want to get back on defining business rules using JBoss Drools. I am just taking up from where I left off in my last Drools post. In my last post, I covered how Drools can use MS Excel spreadsheets to implement decision tables. Now I am going to talk about implementing business rules using a DRL.

The last two articles focused on some of the current projects that I was working on. So after kick starting Drools(4.0.7), I lost track and wrote some posts on JBoss clustering. Interesting as they were, I want to get back on defining business rules using JBoss Drools. I am just taking up from where I left off in my last Drools post. In my last post, I covered how Drools can use MS Excel spreadsheets to implement decision tables. Now I am going to talk about implementing business rules using a DRL.

Configuring HA-JMS on JBoss server cluster

After setting up the HTTP/HTTPS configuration for JBoss server cluster, the next assignment on my table was to set up the HA-JMS on the server cluster.

Configuring HTTP and HTTPS clustering on JBoss Server

Some collegues of mine were facing problems getting the HTTP/HTTPS clustering setup done for JBoss server. Although I have no experience on working with JBoss I decided to give it a try.

JBoss Drools – Decision Tables

I have been playing around with JBoss Drools(Version 4.0.7) – the open source rules engine.  JBoss supports business rules implementation using three techniques:

1. Decision Tables
2. Writing DRL file
3. Defining business flow using rules flow rf file

This post is going to cover the first technique for business rules definition using Drools Decision table.

Implementing localization/internationalization(i18n) in Flex

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I spent yesterday and today morning understanding the intricacies of flex localization. There is considerable amount of Adobe documentation around the syntax and procedure for implementing localization. Unfortunately this documentation is not adequate for a first time localization implementer.

Developing a Flex WebService client

This is my first article on Flex. I thought my first article would be a simple “Hello World” type of example, but it  is not to be. I had been trying to get a flex based WebServices client running on Flex and it had become a struggle. Fortunately “Google” came to my rescue and I have WebServices client up and running as a standalone application and also using LiveCycle Data Services(LCDS).

SOA – What are the different types of “services”?

Welcome to the third part of the ongoing series of posts on Service Oriented Architecture(SOA). So far we have covered what SOA is and what do we understand by a service. Now let’s look at whether it is possible to categorize a “service“.

Getting ICEFaces setup right!

I have spent the last few days working on getting the ICEFaces set up right so that I could get some applications running on it. I had initially decided to create a post around the setup procedure, but fortunately I ran across this rigorous post on ICEFaces setup.

I am sharing the post with you.

SOA – What is a “service”?

This is in continuation to my previous post covering the basics of Service Oriented Architecture. Today I am going to cover what constitutes a “service”.