JBoss Rules v3.0.6 was released. As always, you can download it from the project site http://labs.jboss.com/portal/jbossrules/downloads. This is a maintenance release, with a few bug fixes. We strongly advise all people using JBoss Rules versions 3.0.x to upgrade to version 3.0.6, specially those using dynamic rules. Our special thanks to Frederic Burlet and Einat IdanRead more →
After talking more abstractly about writing (hopefully better) rules, I would like to go down a bit and talk about real rules engines use cases and some ideas on how to write rules in such cases. I sent an e-mail to the users list asking for cases that users would like to discuss in moreRead more →
A frequent question we got is “how do I write better rules?” or symptomatic variations of that like: What am I doing wrong? I have so much procedural code in my rules… How do I call a specific rule? (that comes from 2 types of people: those used to backward chaining and those used toRead more →
A new feature has been added to the JBoss Rules code, allowing users to create a graphical flow chart that defines the order in which rule sets should be evaluated. This blog shows some examples on how to use ruleflow. Ruleflow will be available in the next milestone release, and really anxious users can alreadyRead more →
SBVR is a OMG standard for natural language rules and vocabularies (nominally using English). We think SBVR (Semantics of Business Vocabulary and Business Rules) is an important and useful standard, which can be used for rules interchange in a “source” and human readable format (which RuleML? and RIF are not aiming to do). From aRead more →
Progress is going well with the Clips parser I now have the full LHS working, exception functions. That includes the ‘and’, ‘or’, ‘not and exists conditional elements, with full nesting, including ‘and’ and ‘or’ inside the ‘not’ and ‘exists’. Patterns work with literals, bound variables, predicates and return values. I’m now working on functions atRead more →
We have often stated that the Drools rule engine is fully language independant, but to date it’s only had two parsers – XML and DRL. For a bit of fun this weekend, hey I’m a willd type of guy, I went ahead and started on an experimental Clips grammar with ANTLR, although its still aRead more →
Well, its been a while since any updates. In the mean time I have moved house, twice, once to Sydney (temporarily) and then back to my home in Queensland, so its been a disruptive period. I have been working out of the wonderful Red Hat Sydney office (North Sydney, photos later – amazing view !),Read more →
3.1-M1 is now avaliable. Release NotesDownloads Drools 3.1 is the development cycle for the eventually JBoss Rules 3.2 stable release, although the current feature set is looking like this might become 4.0. 3.1-M1 is the first milestone release, which provides an unstable snapshot of the features to date. The documentation will not be updated untilRead more →
As useful as jakarta commons is, it does have a tendency to bloat your classpath, even if just one method is needed from a jar. JBoss Rules uses commons JCI to allow compiler abstraction, which allows us to easily move between the Janino and the Eclipse Java Compiler. JCI relies on commons-logging, commons-lang, commons-collection andRead more →
