1. jBPM 5.2 - JBoss Business Process Management

2. Agenda

Overview of BPM.

BPMN 2.0 Notation

What is jBPM?

Installation of JBPM

Eclipse based editor

Guvnor (webased editor) and jBPM console

JBPM API - KnowledgeBase, knowldegesession, knowledgeBuilder, other terms.

Constructs used in jBPM - Script task, User task, Service Task, Rule Task, Startevent, End
Event, Gateways(converge and diverge), timer events

JBPM 5.2 Examples
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3. Overview of BPM

What is BPM?

BPM stands for Business Process Management

The term business process management typically refers to a set of activities enterprises
can employ to automate and optimize business processes in a manner adaptable to
dynamically changing environments

BPM in system engineering is the activity of representing processes of an enterprise, so
that the processes can be analyzed and improved.

BPM is typically performed by business analysts and managers who are seeking to improve
process efficiency and quality.
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4. Overview of BPM continue...
– BPM is embodied in three distinct practices:

Process design: The task of designing existing and new processes

Process execution: The execution of an automated sequence of related events involving
software processes and/or human activities

Process monitoring: Observance and auditing of the state of individual processes so that
the statistics and performance of these processes can be recorded, reported, and optimized

Some available BPM languages are:
– BPMN 2.0
– Business Process Execution Language (BPEL)
– Web Services Choreography Description Language (WS-CDL)
– XML Process Definition Language (XPDL)
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5. BPMN 2.0 Notation

Business Process Modeling Notation (BPMN) is a standard.

BPMN is a graphical modeling language, with symbols, relationships and attributes for the
purpose of process modeling.

Easier to understand and learn.
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6. BPMN 2.0 continue...
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7. BPMN 2.0 Notation continue...
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8. What is JBPM?

JBPM is a flexible business process management (BPM) suite.

It makes the bridge between business analysts and developers.

Provide features for both
– Business Analyst
– Developers
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9. JBPM Features

Embeddable, lightweight Java process engine, supporting native BPMN 2.0 execution.

BPMN 2.0 process modeling in Eclipse (developers) and the web (business users).

Process collaboration, monitoring and management through the Guvnor repository and the
web console.

Human interaction using an independent WS-HT task service.

Tight, powerful integration with business rules and event processing
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10. Overview
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11. Core Engine

Responsible for execution of the processes.

Main features of core engine
– Light weight (can be deployed on almost any device that supports a simple Java Runtime
Environment.
– Ability to migrate running process instances to a new version of their process definition
– Pluggable persistence with a default JPA implementation.
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12. Installation of JBPM
– Prerequisites:

Java JDK 1.5+

Ant 1.7+
– Location for JBPM installer

There are two versions, a full installer which is already contains a lot of the dependencies
that are necessary during the installation and a minimal installer which is only contains the
installer and will download all dependencies at the time of installation

http://sourceforge.net/projects/jbpm/files/jBPM%205/

jBPM-{version}-installer-full.zip
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13. Installation of JBPM continue...
– Installation Process : The easiest way to get installed is to simply run the installation script.
Go to the install folder and run :

ant install demo
– This will download following in lib directory.

Download JBoss AS

Download Eclipse

Install Drools Guvnor into JBoss AS

Install Oryx Designer into JBoss AS

Install the jBPM gwt-console into JBoss AS

Install the jBPM Eclipse plugin

Install the Drools Eclipse plugin
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14. Installation of JBPM continue...
– After download all the artifacts, we need to start the demo.

ant start.demo
– This will start

H2 database

JBoss AS

Eclipse

Human Task Service
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15. Installation of JBPM continue...
– Test the installation

Go to http://localhost:8080/jbpm-console/app.html for Jbpm console

Got to http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/Guvnor.jsp for
Guvnor repository
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16. Eclipse Editor

The Eclipse editor is a plugin to the Eclipse IDE and allows you to integrate your business
processes in your development environment.

Targeted towards developers.

Graphical editor for creating your business processes.

Advanced testing and debugging capabilities.

Major Features :
– Integration with the knowledge repository.
– Graphical debugging, to see all the running processes.
– Plugging in your own domain specific nodes.
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17. Web-based designer

Allows you to model your business processes in a web-based environment.

Targeted towards more business users.

Graphical editor for viewing and editing your business processes (using drag and drop).
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18. Guvnor

A repository service to store your business processes and related artifacts.

A web-based user interface to manage your business processes
– Targeted towards business users.
– Supporting the visualization of your processes.

Collaboration features to have multiple actors.
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19. jBPM Console

Business processes can be managed through a web console. It is targeted towards
business users and its main features are:
– Process instance management: the ability to start new process instances, get a list of
running process instances, visually inspect the state of a specific process instances, etc.
– Human task management: being able to get a list of all your current tasks (either assigned
to you or that you might be able to claim), completing tasks on your task list (using
customizable task forms), etc.
– Reporting: get an overview of the state of your application and/or system using dynamically
generated (customizable) reports, that give you an overview of your key performance
indicators (KPIs).
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20. Knowledge Base API
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21. The jBPM API

Knowledge Base
– First requirement to have to cickstart the process.
– Should include all the process definitions.
– Creating a knowledge base.

KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder()

kbuilder.add (ResourceFactory.newClassPathResource ("MyProcess.bpmn"),
ResourceType.BPMN2)

KnowledgeBase kbase = kbuilder.newKnowledgeBase();
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22. Session

After loading your knowledgebase, you should create the session to interact with the
engine.

Session can be used to start new processes, signal events, etc.

The following code snippet shows how to create a session:

Stateful Knowledge Session ksession = kbase.newStatefulKnowledge Session();

Process Instance process Instance = ksession.startProcess ("com.sample.MyProcess");
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23. Creating a process

A process can be created in
– Eclipse Editor (Demo)
– Web based Editor (Demo)
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24. Activities and Events of jBPM

Script Task

User Task

Service Task

Rule Task

Start Event

End Event

Gateways ( converge and diverge)

Timer events etc.
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25. Start Event

Start of the process.

A process should have only one start node.

No incoming connection.

Only one outgoing connection.
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26. End Event

End of the process.

A process should have one or more end events.

One incoming connection.

No outgoing connection.
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27. Script Task

Represent a script that should be executed in the process.

One incoming connection.

One outgoing connection.

The dialect used for coding the action is JAVA and MVEL.
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28. User Task

Tasks to be executed by human being are handled by human tasks.

One incoming connection.

One outgoing connection.

Either group or user is mentioned with the task to determine who will perform the task.
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29. Service Task

All the work that is executed outside a process engine is represented in service task.

Domain specific services can be defined, using unique name, defining

parameters, and results.

One incoming and one outgoing connection.

Has to be configured. (To be shown later)
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30. Rule Task

Represent a set of rules that need to be evaluated.

One incoming and one outgoing connection.

Rules are defined in seperate Drools rule format.

Have to be configured (one example)
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31. Gateways

Allows to create branches (diverging) or merge branches (converging).

A diverging gateway has one incoming connection and two or more outgoing connection.
Three types of gateways are there.

AND, OR and XOR.
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32. Gateways continue

A converging gateway allows you to synchronize multiple branches.

A converging gateway has two or more incoming connections and one outgoing
connection.

AND or XOR types
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33. Other features

Data
– Data can be retrieved, stored, passed on and used.
– Process level variables can be set when starting a process.(show in eclipse)

Constraints
– Can be used at various locations.
– For example in script tasks, diverging gateways etc

Action Scripts
– Action scripts can be used in different ways:
– within a script task
– as entry or exit actions
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34. Connecting eclipse with guvnor

Go to File->New->Other

Select Guvnor.

Create new repository.

Select your guvnor repository on port 8080.

Select the file/process you want to add to guvnor, right click, select guvnor, select add.

Select the repository and package you want to add.
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35. Demo

Service Task (configure a service task, run a task)

Business Rule (Drools Rule) Task

Human task (Add to Guvnor repository, deploy the package, manage and
monitor on jBPM console.
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36. Thanks
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