Guvnor is the business rules management system in Drools 5. When you deploy it out of the box, you get an unsecured web application that stores data in Jackrabbit’s embedded Derby database.
This two-part article explains how to tune Guvnor deployed on JBoss Application Server 4.2.3. (If you missed the first half of the series, catch up in our archives.)This means that we will use the container’s configuration files and security infrastructure. This installment covers enabling password validation based on an OpenLDAP server, moving from the default data repository, and enabling SSL for better security. » Read more
Guvnor is the business rules management system in Drools 5. When you deploy it out of the box, you get an unsecured web application that stores data in Jackrabbit’s embedded Derby database.
The first half of this series explains how to tune Guvnor deployed on JBoss Application Server 4.2.3. This means that we will use the container’s configuration files and security infrastructure. We will cover enabling password validation based on an OpenLDAP server, moving from the default data repository, and enabling SSL for better security in part 2. » Read more
Jaroslaw is a JBoss QA Engineer based in Poland, and recently published an introduction to Drools that he kindly shared with us. This second piece covers Drools (or JBoss Rules), the open source business rules engine… in this case combining it with Hibernate.
This article is presented here in its entirety (with a trackback). The original can be found on Jaroslaw’s site. This article is also available in German and Polish.
Drools evaluates facts which are present in the working memory. But could it also reason over data stored in a relational database? This feature would extend Drools’ range of applicability and since this is an often asked question in the mailing list, it’s worth to know the answer which sounds: “of course Drools can!”
Hibernate, one of the most favorite ORM tools, allows to handle data stored in a relational database. This article will describe how one can access a Hibernate session from inside the rule engine. I will use PostgreSQL as a data source. Besides that I will create two classes, Game and Player, having a many-to-many relationship. » Read more
One of our long-time writers introduced us to Jaroslaw, a JBoss QA Engineer based in Poland, and mentioned that he’d been working on some documentation we might find interesting. And, boy, do we! This first piece de-mystifies the complex world of rules engines. Whether you call it Drools, or JBoss Rules, or JBoss Drools… you still might want to know what it does and how it functions in your technical environment. (Not to mention that it’s just all kinds of logical and interesting–if you like brainteaser word puzzles or abstract math questions, this qualifies as pleasure reading.)
This article is presented here in its entirety (with a trackback). The original can be found on Jaroslaw’s site. This article is also available in German and Polish.
Either you’re a developer, architect or a business analyst, it’s worth to get familiar at least with the first chapter of this article. It contains an introduction into the world of rule engines, which increase the readability of certain applications and make them easier to manage and to maintain. It applies to apps that take decisions, which depend on events or a state of some objects.
This article contains an introduction to rule engines, a description of an installation of Eclipse IDE and a guide how to configure Eclipse with the Drools Workbench plug-in. » Read more
