Master Drools - from Intermediate to Expert

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Juhan Aasaru

4:32:44

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1. Introduction - what you need to know to write better rules

1. Drools internals intro.mp4

00:59

2. Basic components of Drools rule engine.mp4

04:32

3. Introduction to Rete, ReteOO and Phreak.mp4

04:55

4. Rete graph of a single rule.mp4

06:38

5. Rete graph of two rules that share nodes.mp4

03:47

6. Rete graph of 3 rules that share nodes.mp4

02:09

7. Rete graph with rules that use joining and not clause.mp4

07:23

8. Most important differences between Phreak and Rete algorithms.mp4

03:19

9. Rules of thumb for writing faster performing DRL.mp4

10:12

10. Section recap.mp4

01:05

2. Step-by-step code examples and how to run them locally

1.1 Example code in GitHub.html

1. Structure of code examples.mp4

07:20

3. Spreadsheet Decision Tables

1. Spreadsheet decision tables intro.mp4

11:36

2. Basic layout of a spreadsheet decision table.mp4

10:53

3. Defining multiple action columns in a spreadsheet.mp4

04:43

4. Using formulas in a spreadsheet decision table.mp4

06:29

5. Set custom DRL rule name and add a comment.mp4

05:02

6. How to place multiple rule tables in one spreadsheet..mp4

04:20

7. Multiple rule tables in one spreadsheet. Several parameters in a single cell..mp4

04:40

8. Join multiple fact objects in a spreadsheet decision table.mp4

08:04

9. Using forall construct as a condition in spreadsheet decision tables.mp4

09:46

10. Condition without a pattern in spreadsheet decision table.mp4

03:54

11. Set rule priority in a spreadsheet decision table.mp4

08:13

12. Sequential attribute in RuleSet.mp4

04:42

13. Using activation-groups in spreadsheet decision tables.mp4

08:44

14. Drools sequential mode.mp4

09:30

15. U Using custom labels in spreadsheed decision tables.mp4

06:06

16. Recap Spreadsheet Decision Tables.mp4

01:00

4. Rule Templates and Creating Rules Dynamically

1. Rule templates intro.mp4

03:13

2. Using Drools Rule Templates (DRT) for creating rules.mp4

16:38

3. Fetching template placholder values for from a tabular data source.mp4

06:24

4. Use Freemarker templates instead of deprecated Drools Rule Templates (DRT).mp4

06:18

5. Declare intermediate types in DRL.mp4

05:46

6. How to declare enumerations in and read back objects of type declared in DRL.mp4

07:44

7. Create and insert objects into session that has type declared in DRL.mp4

03:23

8. Rule templates recap.mp4

01:27

5. Introduction to Complex Event Processing (CEP) with Drools

1. Complex Event Processing intro.mp4

04:31

2. Running rules repeatedly in passive mode. Using global variables..mp4

10:48

3. Risks of using external services to pull data that the rules depend on.mp4

04:48

4. Using forall to find a suitable call that has waited the longest.mp4

03:13

5. Active and passive rule execution modes.mp4

04:41

6. Compose list of events with collect keyword and apply filtering on the results.mp4

04:54

7. Calling halt(). Mixing active and passive rule execution modes..mp4

03:33

8. Adding different timers to a rule.mp4

05:30

9. Stream event processing mode using a time based sliding window.mp4

09:26

10. Declaring fact as event and using a length based sliding window.mp4

06:04

11. Using entry-point streams.mp4

03:24

12. Recap complex event processing.mp4

00:58

Description

Speadsheet decision tables, Complex Event processing, rule templates, slidingwWindows, all with executable code examples

What You'll Learn?

How Drools works internally and what to keep in mind for writing faster performing rules
Create spreadsheet decision tables and spreadsheet templates
What is Complex Event Processing and how Drools handles it
How to use rule templates (DRT or Freemarker) and run dynamically defined DRL
Understand different Drools running modes (active/passive, cloud/stream, sequential)

Who is this for?

Anyone writing rules in Drools DSL and wants to become better at it

Anyone who is considering using Drools for writing rules or processing stream of events

More details

Description
In this course we learn the following topics:
How Drools internal algorithm Phreak works
Using spreadsheet decision tables to create Drools rules
Using templates for creating rules and feeding data into them from spreadsheets and other tabular data sources
Complex event processing in Drools
difference between fact and event
declaring facts and events in Java and inside DRL code
different rule execution modes (active/passive, cloud/stream, sequential)
time and length based sliding windows
entry-points
global variables
timers
For all the examples I have created runnable example code - so you can follow the same steps shown in the video and you are encouraged to try to make changes to the examples and run yourself
I use Apache OpenOffice for editing XSL files so you don't need to use a paid program (like Excel) but you can if you want
This is a follow-up course for my previous corse Master Drools -Â Drools for beginners. I got a lot of feedback for that course (thank you everyone who took time to leave it) and this course is based on that feedback.
In this course if I meet some language construct (forall, collect, not, from) that has been covered in the previous course - then I briefly try to explain it, but it is highly recommended for you to first go through the begninner course because it covers these topics in more depth and moves step-by-step from easier topics to more difficult ones.
Who this course is for:
Anyone writing rules in Drools DSL and wants to become better at it
Anyone who is considering using Drools for writing rules or processing stream of events

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Functional Programming

Juhan Aasaru

Instructor's Courses

Since 2005 I have been working as a Java Developer / Solution Architect / CTO. I have created several in-class courses and two courses on Udemy. I'm passionate about learning new technologies and explaining them in a clear and understandable way. I'm a fan of domain-specific languages - small programming languages that are designed for a specific task. For the past years, I have been involved with a project that heavily relies on utilizing Drools Rule Engine.

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