August 2014
Intermediate to advanced
310 pages
7h 59m
English
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The Drools rule engine
Drools is a rule engine framework that provides the possibility of creating rules in a script language called Drools Rule Language (DRL) and running the rules inside an in-memory inference engine that provides great performance. Rule languages have a declarative nature, which means that the next action to be taken is determined by the input data that triggers specific conditions in the rules, unlike the imperative nature of languages such as Java, where the next action to be taken is determined by the sequence of actions written in the code.
Rules written in DRL follow a very specific syntax for constraints and a configurable syntax for the actions of the rule (which we will keep as plain Java for simplicity). The constraint ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.