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Mastering JBoss Drools 6

You're reading from   Mastering JBoss Drools 6 Discover the power of Drools 6 and Business Rules for developing complex scenarios in your applications

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Product type Paperback
Published in Mar 2016
Publisher Packt
ISBN-13 9781783288625
Length 330 pages
Edition 1st Edition
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Authors (3):
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Mariano De Maio Mariano De Maio
Author Profile Icon Mariano De Maio
Mariano De Maio
Esteban Aliverti Esteban Aliverti
Author Profile Icon Esteban Aliverti
Esteban Aliverti
Mauricio Salatino Mauricio Salatino
Author Profile Icon Mauricio Salatino
Mauricio Salatino
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Table of Contents (13) Chapters Close

Preface 1. Rules Declarative Nature 2. Writing and Executing Rules FREE CHAPTER 3. Drools Runtime 4. Improving Our Rule Syntax 5. Understanding KIE Sessions 6. Complex Event Processing 7. Human-Readable Rules 8. Rules' Testing and Troubleshooting 9. Introduction to PHREAK 10. Integrating Rules and Processes 11. Integrating Drools with our Apps Index

Decorating our objects in memory


We've seen examples where we modify the working memory whenever we detect that a specific condition is happening. We might remove objects, modify existing ones, and even delete them to trigger other rule executions. We've also seen that, sometimes, these elements make sense mostly within the rule executions and used declared types for these cases.

Whether we use declared types of external classes, most of the cases imply one of the following two strategies:

  • We add new objects (declared types or Java classes) to the working memory, representing some inference about our domain model

  • We modify attributes of existing objects in the working memory, adding the inferred data to these properties

These strategies have a few disadvantages when it comes to decorating an existing model. The first case (adding new objects) might imply having to keep a reference between the domain model object and the new inferred object in some form. The second case (modifying attributes...

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