JBoss Drools Business Rules Table of Contents

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Table of Contents

Preface
Chapter 1: Drooling over JBoss Rules
Chapter 2: Getting the software
Chapter 3: Meet the Guvnor
Chapter 4: Guided Rules with the Guvnor
Chapter 5: From Guvnor to JBoss IDE
Chapter 6: More rules in the JBoss IDE
Chapter 7: Testing your Rules
Chapter 8: Data and Rules in Excel
Chapter 9: Domain Specific Language (DSL) and RuleFlow
Chapter 10: Deploying Rules in Real Life
Chapter 11: Looking under the Cover
Chapter 12: Advanced Drools Features
Index

• Preface

• Chapter 1: Drooling over JBoss Rules
  • Who are you? What's your problem?
    • Does this sound like where you work?
  • Life or death business rules
    • What would you do?
  • Business rules in your organization
    • Exercise — rules in your organization
    • The chocolate factory
    • Build your own rule engine in Excel
    • Why can't the tech guys write the rules for me?
  • Why existing solutions don't cut it
  • Rule engines to the rescue
    • Other rules (Microsoft Outlook)
  • Meet JBoss Rules
    • A bit more on open source
    • The JBoss Rules community
      • Where to get help
      • How to ask for help
  • The bigger picture
    • Members of your team
  • How do I write the rules
  • Introducing the BRMS (Guvnor)
  • Parts of the solution
    • Rules editor
    • Rules compiler
    • Runtime
    • Fact model
    • Java
    • Rule repository
    • Rest of the system
  • When not to use a rule engine
  • Summary

• Chapter 2: Getting the software
  • What are we going to install?
    • Who should install it?
    • Installing Java
    • Installing JBoss
      • Actual install
    • Installing the BRMS/Guvnor
    • Installing Eclipse
    • Installing the Drools plug-in
      • Finding the plug-in
    • Installing Maven
    • Installing sample projects for this book
      • Setting up the sample project in Eclipse
      • Getting Maven and Eclipse to work together
    • Troubleshooting
  • Summary

• Chapter 3: Meet the Guvnor
  • Taking a tour with the Guvnor
    • Getting started
    • General navigation
      • The search screen
    • Administration
      • Loading the samples
      • What did we just do?
      • More on the admin page
      • Rules
      • Packages
      • Deployment
      • QA—Quality Analysis
      • Hello World example
  • Summary

• Chapter 4: Guided Rules with the Guvnor
  • Passing information in and out
  • Building the fact model
  • Importing the fact model into Guvnor
    • Guided rules using the fact model
    • The step-by-step answer
  • Running this scenario
  • What just happened?

• Summary

• Chapter 5: From Guvnor to JBoss IDE
  • A more powerful rule
    • Have a go
    • Updating the rule—step by step
      • The When part
      • Looking behind the curtain—a text-based rule
    • A small problem...
      • Rule attributes
    • More on the guided editor
      • Possible comparisons
      • Condition types
      • Add more options
      • Multiple field constraints
      • The Then part
      • More rule options and attributes
    • Text editing
    • Introduction to the JBoss IDE
    • Hello World in the JBoss IDE editor
      • What just happened?
    • Try it yourself
  • Summary

• Chapter 6: More rules in the JBoss IDE
  • Rule syntax
    • Patterns for the When part
    • Patterns for the Then part
    • Shipping chocolate bars
    • The problem (and remind me why I need business rules)
      • Why rules scale better—a reminder
    • Getting and building the sample
      • Rules
      • ChocolateShipment.java
      • CustomerOrder.java
      • OompaLoompaDate
      • The RuleRunner file
      • MultipleRulesExample
    • Running the sample
      • Console
    • More powerful rule syntax
      • Lefthand side
      • Righthand side—Then
    • Guided editor in the JBoss IDE
  • Summary

• Chapter 7: Testing your Rules
  • Testing when building rules
    • Making testing interesting
    • Testing using Guvnor
    • Testing using FIT
      • Getting FIT
      • The FIT requirements document
      • Running FIT on our sample
      • What just happened?
      • What can go wrong?
    • The FIT plumbing
    • What is unit testing?
      • Why unit test?
      • Unit testing the Chocolate Shipments sample
      • What just happened?
    • What if it goes wrong?
      • Failures and errors
      • Testing an entire package
  • Summary

• Chapter 8: Data and Rules in Excel
  • Reading data from Excel
    • Business rules for this sample
    • Getting and running the sample
      • Input
      • Rules
      • Running the sample
      • What's going on?
      • Under the covers
      • More on Cells and Ranges
    • Sophisticated, but repetitive rules
    • Some Excel magic
    • Decision tables behind the scenes
      • Header information
      • RuleTable—Evaluate the buy trades
      • RuleTable—Execute the buy trades
      • Other rule tables
      • Mixing rules and decision tables
    • Running the Chocolate Trading example
      • What just happened?
      • Have a go
  • Summary

• Chapter 9: Domain Specific Language (DSL) and RuleFlow
  • What is a Domain Specific Language (DSL)?
    • Expanders
      • The DSL format
      • Other DSL editing options
      • Writing DSLs
      • Meet the sample
    • Running the DSL example
      • Guvnor and DSL-based rules
  • Ruleflow
    • Ruleflow is not workflow
    • That Homeloan example again
  • Linking rules to Ruleflow
  • A quick introduction to stateful applications
    • Stateful rules and Ruleflow

• Summary

• Chapter 10: Deploying Rules in Real Life
  • One size fits all architecture
    • What needs to be deployed?
    • Rules as code or data?
  • Deployment process
    • What's a repository?
  • Deploying rules
  • Push or pull?
  • Loading our rules
    • Looking inside RuleRunner.java
    • Helper methods
  • Public methods
    • Stateless
    • Stateful
  • Alternative method—RuleAgent
  • Web deployment
    • Maven for packaging

• Summary

• Chapter 11: Looking under the Cover
  • Rule engine concepts
    • Facts or objects
    • Working memory
    • Pattern matching, Agenda, and Activations
    • Conflict resolution
    • A more dynamic Agenda
    • Truth maintenance
  • Back to the future (with chocolate shipping)
  • Logging working memory
    • Looking at the working memory log
    • Drools Audit Log Viewer
  • Rete algorithm
    • Rete in action
    • Debugging rules
      • Debugging rules in the Eclipse IDE
      • Rules debug perspective
      • Other Drools views while debugging
    • When to log, when to test, and when to debug
  • Summary

• Chapter 12: Advanced Drools Features
  • Pigeons, Drools, and Complex Event Processing
    • Implementing Complex Event Processing using Fusion
    • More powerful events
  • Inline beans
    • Loading data when your beans don't exist—Smooks
  • From pigeons to biscuits—Drools Solver for your local supermarket
    • How Drools Solver works
      • Implementing a Solver
      • More information on Solver
    • Forward and backward chaining
    • Changing the conflict resolution methodology
    • Standard rule engine API—JSR 94
      • Other rule engines
  • New API
    • Drools flow—a full workflow engine
    • New features in Guvnor
    • Does this still sound like where you work?
  • Summary

• Index

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