Writing business rules has always been a challenging task.
Business rules tend to change often leading to a maintenance nightmare.
This book shows you various ways to code your business rules using Drools, the open source Business Rules Management System.
Drools JBoss Rules 5.
X Developer s Guide shows various features of the Drools platform by walking the reader through several real-world examples.
Each chapter elaborates on different aspects of the Drools platform.
The reader will also learn about the inner workings of Drools and its implementation of the Rete algorithm.
The book starts with explaining rule basics, then builds on this information by going through various areas like human readable rules, rules for validation, and stateful rules, using examples from the banking domain.
A loan approval process example shows the use of the jBPM module.
Parts of a banking fraud detection system are implemented with the Drools Fusion module which is the complex event processing part of Drools.
Finally, more technical details are shown detailing the inner workings of Drools, the implementation of the ReteOO algorithm, indexing, node sharing, and partitioning.
Over 300 pages of material, ranging from introductory to advanced. The book covers Drools usage of basic rules engine use, BPM/workflow and CEP.
I had received an advance copy of the book to review for free. My background is a Java developer.
I've just begun using this book and am glad to say that the examples from the book compile and work correctly. The first example is not part of the downloadable examples.
Andrea Michal
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