Tom Baeyens and Joram Barrez are experts on jBPM and authored the book "jBPM 4 in Action". jBPM is a powerful open source BPM and rules management platform that is great for implementing business processes and is highly embeddable in Java applications. The document highlights several new features of jBPM 4 including improved tooling, API simplification, and support for multiple languages. It provides examples of using jBPM to model common business processes and demonstrates its flexibility and performance.

1. jBPM 4 in Action
by
Tom Baeyens & Joram Barrez

2. Speaker’s qualifications
Founded jBPM in 2003
Project Lead of jBPM
Passionate about BPM and Java
Articles/international conferences
JBoss jBPM core developer (06/09)
Before: jBPM/BPM consultant
2

3. jBPM is great for BPM
*and*
for developers
3

6. Business process
An (organized) way of 'doing things'
... with a certain goal
6

7. Processes are everywhere
7

8. Processes are everywhere

9. Processes are everywhere

10. Conclusion
Any company
They all have
Any product
business processes
Any service
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11. Conclusion
Any company
They all have
Any product
business processes
Any service
Which means
– 'Doing business'
== executing some business process
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12. Newsflash
Every app you write
– Is (part of) a business process
So your job ...
– implementing business processes!
Wouldn't you rather have a powerful,
flexible framework where you can apply
all your Java-powers?
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13. Introducing jBPM
Transactional state-machine
Generic graph execution engine
But most of all...
– A kick-ass JAVA BPM engine
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14. jBPM Evolution
jBPM 4
Product • Activity Pluggability API
• Command Based Services
•Multiple Languages
• Many Execution modes
• DB Partitioning
• DB Evolution
• Full Embeddability
Project jBPM 3
• First Activity Pluggability
• First Multiple Languages
• First Enterprise Embeddability
jBPM 2
• Std Java Embeddable
• Hibernate state machine
jBPM 1
• EJB state machine

15. jBPM today

16. jBPM today

17. JBPM v4: what's new?
Clean & simplified
– Based on 2nd generation PVM
– New API (incl. cool query mechanism)
– Compact db schema
– Native Spring integration
Improved tooling
– Sexy GWT console
– Signavio web modeling
QA lab
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18. jBPM3 jBPM4

19. Processes As Part Of
Software Development
Software Project
Abstract Process Executable Process
Non-tech
Business
Analyst <details /> Developer
Analyst
Java, XML, Buildscripts,
Tests, … Developer
EAP jBPM Your
SOA-P
App
JBoss
Tomcat
JDK 5
Oracle, MySQL, PostgreSQL

20. jBPM API jbpm.cfg.xml
Configuration cfg = new Configuration();
ProcessEngine processEngine =
cfg.buildProcessEngine();
processEngine.getRepositoryService();
processEngine.getExecutionService();
processEngine.getHistoryService();
processEngine.getTaskService();
processEngine.getIdentityService();

21. Print Dots
• Automatic activity
• Print dots on the console

22. Starting ProcessInstance
Some
Web
Framework
public void userClickedButton() {
...
executionService
.startProcessInstanceByKey("PrintDots");
...
}

23. <process name=“PrintDots">
<start>
<transition to="print dots" />
</start>
<custom name="print dots"
class="com.devoxx.jbpm.printdots.PrintDots">
<transition to="end" />
</custom>
<end name="end"/>
</process>

24. Bananas
• Get a quote for bananas
• Asynchronously
executionService
.signalExecutionById
MDB
FruitStore

25. <process name="Bananas">
<start>
<transition to="get price for bananas"/>
</start>
<state name="get price for bananas">
<on event="start">
<event-listener
class="com.devoxx.jbpm.bananas.GetPriceForBananas"/>
</on>
<transition to="print price of bananas"/>
</state>
<custom name="print price of bananas“
class="com.devoxx.jbpm.bananas.PrintPrice">
<transition to="end"/>
</custom>
<end name="end"/>
</process>

26. Yummie
• Choose 1 outgoing transition
• Based on the price of bananas

27. <process name="Yummie">
<start>
<transition to="checkPrice"/>
</start>
<decision name="checkPrice">
<transition to="yummie">
<condition expr="#{priceForBananas &lt; 10}" />
</transition>
<transition to="hungry" />
</decision>
<custom name="yummie"
class="com.devoxx.jbpm.yummie.PrintMsg">
<field name="msg">
<string value="Yummie!" />
</field>
</custom>

28. ...
<custom name="hungry"
class="com.devoxx.jbpm.yummie.PrintMsg">
<field name="msg">
<string value="I'm hungry :-(" />
</field>
</custom>
</process>

29. GetCoffee
• User task
Tasklist complete
add task
task

30. <process name="GetCoffee">
<start>
<transition to="get coffee"/>
</start>
<task name="get coffee"
assignee="johndoe">
<notification/>
<transition to="print coffee"/>
</task>
<custom name="print coffee"
class="com.devoxx.jbpm.coffee.PrintCoffee"/>
</process>

31. Other Features
• jPDL
– Concurrency
– Asynchronous continuations
• Task forms
– Rapid prototyping

32. Other Features
• Production usage
– Installer
– Upgrade
– Process versioning & migration
– Clusterable

33. Other Features
• Tools
– Eclipse process designer
– Web based modeller (Signavio)
– Web console
• Superfast

34. Other Features
• Multiple process languages
– jPDL
– BPMN 2 !

35. DEMO
•The train ticket demo
•INTRO
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36. Taking the train 2.0
• The Problem
– Using coins, ticket machines, conductors, ...
sooooo 2008
• The solution
JBPM on Rails
36

37. Use case
1. Ticket request
3.Accept
2.Price quote
Other Train
System (EJB)
37

38. Architecture
SMS Gateway
HTTP Interface (Servlet)
Ext.
jBPM on Rails Sys.
(EJB3)
User Registration
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39. Where can I find it?
Blog http://www.jorambarrez.be
/blog/2009/09/18/train-ticket-demo-overview-final-part-getting-started-with-jbpm-in-less-than-a-minute/
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40. DEMO
•The train ticket demo
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41. JBPM v4: performance
jBPM 4.2 basic benchmark - Postgresql 8.3
(10 000 executio ns)
12
10
Seq. exec.
2 fixedT P
8 3 fixedT P
4 fixedT P
avg duration (ms)
5 fixedT P
6 fixedT P
6
7 fixedT P
8 fixedT P
9 fixedT P
4 10 fixedTP
2
0
process 01 proces s 02 proces s 03 proces s 04 proces s 05 random
Config: Ubuntu 9.04, AMD Phenom II X4 3.0Ghz, 8Gb Ram, 7200rpm HD
DB and benchmark on same machine
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42. JBPM v4: performance
Avg process exec. time
– 0.75ms – 2ms
– 1.8 mil./hour
– Yeah, that's fast
jBPM overhead == (extremely) minimal
– So what are you waiting for?
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43. Getting started
 I just know you're excited to give it a try
 You can do it tonight
 Just before you go to sleep
 Or even in your bed
 Last demo movie

44. Q&A
makes your work flow
http://jbpm.org
http://proces s developments .blog s pot.com
http://jorambarrez.be/blog