The short high-level answer is:

You can use JBoss Tools or Eclipse plugins for Drools to create various kinds of rules.
You can use JBoss Drools Guvnor to manage rules and create rules.

Before you can create rules you need to provide a data model of some kind, typically a collection of Java classes that will be the 'facts' that rules are applied to.

In order to execute rules you initialise working memory with rules and facts and the rules are fired.

This implies that a lot of what happens is specific to your data model. Thus you will have to develop that code that decides how your model interacts with the rules.

Drools provides an agent that can interact with Drools Guvnor to retrieve the rules instead of using some local storage.
Your code will have to initialise the agent and then rules will be retrieved from Guvnor and executed locally.

You can also use integration tools like Apache Camel or Spring Integration and invoke Drools from within an integration flow.
Drools Server provides remote execution of rules via a RESTful API and other mechanisms for Apache Camel.

Hope this gives you some direction.

On 17/02/2011 11:38, vkishorekumar wrote:

Hi Travis,

Thank you for the prompt response. So if that is the case, say if I use
JBoss BRMS, how do I make my rules available to the external world (if not
through webservice)? Is a GUI the only way to access the business rules?
There must be some programmatic way of accessing the JBoss rules.

Sorry for confusing you with the Drools server, because I am myself confused
with the architecture as in where will Drools fit in and where will JBoss
BRMS fit in? All I need is to implement business rules using JBoss product.

Thanks & Regards
Kishore

Corneil du Plessis - Software Architect

TSC Technologies (Pty) Ltd
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