Book Image

Mastering JBoss Drools 6

By : Mariano De Maio, Mauricio Salatino, Esteban Aliverti
Book Image

Mastering JBoss Drools 6

By: Mariano De Maio, Mauricio Salatino, Esteban Aliverti

Overview of this book

Mastering JBoss Drools 6 will provide you with the knowledge to develop applications involving complex scenarios. You will learn how to use KIE modules to create and execute Business Rules, and how the PHREAK algorithm internally works to drive the Rule Engine decisions. This book will also cover the relationship between Drools and jBPM, which allows you to enrich your applications by using Business Processes. You will be briefly introduced to the concept of complex event processing (Drools CEP) where you will learn how to aggregate and correlate your data based on temporal conditions. You will also learn how to define rules using domain-specific languages, such as spreadsheets, database entries, PMML, and more. Towards the end, this book will take you through the integration of Drools with the Spring and Camel frameworks for more complex applications.
Table of Contents (18 chapters)
Mastering JBoss Drools 6
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Summary


In this chapter we have covered different ways to represent our knowledge in Drools.

For a tailored language for specific use cases, DSL/DSLR could be a solution that hides the complexity of the DRL syntax behind a language that is more familiar to an SME.

For situations where a big set of rules with a common structure is required, decision tables could be a perfect fit. The big advantage of decision tables is that they are very concise and user-friendly.

When more flexibility in the structure of the rules is required, rule templates could be a good help. The out of the box support for data sources such as spreadsheets, objects, or even a SQL store makes rule templates a very interesting option.

If we are dealing with non-rule based knowledge such as neural networks, decision trees, or scorecards, we must consider the use of the drools-pmml module. Maybe this is not the best performance solution but it allows us to easily integrate these models with our current rule-based solution.

Now...