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