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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

Running CEP-based Scenarios


Now that we've seen the main components of CEP rules, we need to start paying attention to some configuration steps required to run the CEP scenarios successfully in Drools. Both the Kie Base and Session that run the CEP cases need special management and we will see in the next subsections, as follows:

  • How to configure the Kie Base to support complex event processing

  • The difference between continuous and discrete rule execution

  • How the Kie Session internal clock works to evaluate temporal events

Stream processing configuration

In order to create a CEP Drools runtime, we need to provide a few extra configurations from the default initialization. The first one we need to add is the event processing mode of the Kie Base that we'll use.

The event processing mode will determine the manner in which the new data inserted into the runtime will be processed. The default event processing mode is called the CLOUD mode and basically treats any incoming data the same way, regardless...

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