JBoss Drools
CloudLabs
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Assignment
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Course Overview
Drools is a Business Rules Management System (BRMS) solution. It provides a core Business Rules Engine (BRE), a web authoring and rules management application (Drools Workbench) and an Eclipse IDE plugin for core development.
At the end of the training, participants will be able to:
Pre-requisite
1- 2 years of experience in Java
Duarion
5 days
Course Outline
- Business Rules: Separating Policy from Code
- Declarative Programming in Rule Engines
- Understanding Rules in the context of a Rule Engine
- Expert Systems and Expert Shells
- Forward and Backward Chaining Explained
- Architecture of a Rule Based System
- Introducing Drools 5.0
- Eclipse and the Drools IDE
- Drools Expert: Rule Basics and Rule Syntax
- Working with the KnowledgeRuntime interface
- Working with Facts: Inserting, Updating, Retracting
- Self-cleaning facts with InsertLogical
- Querying the Engine
- Unit Testing with Drools
- Using JUnit 4 to Test your Rules
- Exploring Drools Architecture
- Drools and Maven
- Reasons to use Rule-based systems / Common Rule Technology Uses
- Efficient Pattern Matching: The Magic Behind a Rule Engine
- Fact Combinations and Permutations (cross product)
- Ordering Conditions
- Basic Conflict Resolution: Dealing with Clashing Rules
- Salience
- Rule Families and Message Passing
- Deep into the Rule Language
- Using DRL files, organizing into domains and namespaces
- Property Change Listeners (when to use them)
- Globals
- Understanding the Agenda
- NoLoop
- Operators and Elements
- Eval and Inline Eval
- Test-Driven Development with Drools
- Using JUnit 4 to Test Rules
- Developing the Loan Calculator using TDD
- Rule Systems Design Considerations
- Rules as first class citizens
- Domain Object versus Rule Engine Objects
- Using Rules in a Web Environment
- Synchronous versus Asynchronous Rule Engine Usage
- Stateless versus Stateful Knowledge Sessions
- Human Readable Rules: Domain Specific Languages in Drools
- Integrating Processes and Rules using Rule Flows (Drools Flow)
- Decision Tables
- Storing and Managing your Rules with Drools Guvnor
- Technical Rules and Business Rules
- Rule Packages and the Global Package
- Importing Rules
- Creating Test Scenarios and using the QA module
- Overview of Drools Deployment in a Java EE Environment
- Options and Gotchas on Specific Application Servers and Frameworks (EJB3, Spring, Seam)
- Drools Execution Server
- Spring Framework Integration
- Recipe Finder: A Java EE Web Drools Application (A Guided Lab)
- Design Principles for Building Better Rule Systems
- When and when not to use a Rule Engine
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