Geoffrey De Smet Marco Rietveld Managing workflows and business rules with Guvnor and jBPM designer

Business Logic Integration Business Logic Integration Platform Rule engine Workflow Complex event processing (CEP) Business Rule Management System (BRMS) Automated planning

Geoffrey De Smet Why would I need Drools and Guvnor?

Use cases I have hammer, so every problem is a nail?

Easier to read, better at scaling

Change often/fast

Insurances acceptance and fee calculation

Mortgages example

Which field has the result our application needs? Version 1 Version 2

Business rules are hard coded in Java Invalid: must be a number

when income below 1000 and age above 50

when income below 1% of mortgage amount Invalid: must be a number

My business requires domain expertise Only mortgage managers understand mortgage rules

participated in mortgages conferences/courses? No

years of mortgage customer experience? No

participated in mortgages conferences/courses? No

participated in mortgages conferences/courses? No

Domain experts can read rules in the Guided Rule Editor

Domain experts can write rules in the Guided Rule Editor Change

Translated to DRL Executed on JavaBeans

Guided Rule Editor demo video Demo video

Domain experts make the building Source: wikipedia

My business rules change often This mortgage rule change must be released by noon

Deliver changes fast

Deliver changes fast

Deliver changes fast

Self-service by mortgage manager

Deployment infrastructure

Auditable and reproducible Why was that mortgage approved last year?

Summary

Change often/fast

Marco Rietveld

How do we keep business analysts from bothering us? Wait, you want A to do D, but not B and C?!?

How do we let business analysts do their work?

What does jBPM Designer do?

Demo

Summary

Monitoring

Speed of development

Increased agility A business process is a collection of steps that when executed, accomplish a specific goal. It can often be described using a flow chart.

Notation

Extensible

BPMN 2.0 Example <?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?> <definitions id=&quot;Definition&quot; targetNamespace=&quot;http://www.example.org/MinimalExample&quot; xmlns=&quot;http://www.omg.org/spec/BPMN/20100524/MODEL&quot; xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot; xsi:schemaLocation=&quot;http://www.omg.org/spec/BPMN/20100524/MODEL BPMN20.xsd&quot;> <process processType=&quot;Private&quot; isExecutable=&quot;true&quot; id=&quot;ScriptTask&quot; name=&quot;ScriptTask Process&quot; tns:packageName=&quot;com.sample&quot; > <!-- nodes --> <startEvent id=&quot;_1&quot; name=&quot;StartProcess&quot; /> <scriptTask id=&quot;_2&quot; name=&quot;Hello&quot; scriptFormat=&quot;http://www.java.com/java&quot; > <script>System.out.println(&quot;Hello World&quot;);</script> </scriptTask> <endEvent id=&quot;_3&quot; name=&quot;EndProcess&quot; > <terminateEventDefinition/> </endEvent> <!-- connections --> <sequenceFlow id=&quot;_1-_2&quot; sourceRef=&quot;_1&quot; targetRef=&quot;_2&quot; /> <sequenceFlow id=&quot;_2-_3&quot; sourceRef=&quot;_2&quot; targetRef=&quot;_3&quot; /> </process> <bpmndi:BPMNDiagram> <bpmndi:BPMNPlane bpmnElement=&quot;ScriptTask&quot; > <bpmndi:BPMNShape bpmnElement=&quot;_1&quot; > <dc:Bounds x=&quot;16&quot; y=&quot;16&quot; width=&quot;48&quot; height=&quot;48&quot; /> </bpmndi:BPMNShape> <bpmndi:BPMNShape bpmnElement=&quot;_2&quot; > <dc:Bounds x=&quot;96&quot; y=&quot;16&quot; width=&quot;80&quot; height=&quot;48&quot; /> </bpmndi:BPMNShape> <bpmndi:BPMNShape bpmnElement=&quot;_3&quot; > <dc:Bounds x=&quot;208&quot; y=&quot;16&quot; width=&quot;48&quot; height=&quot;48&quot; /> </bpmndi:BPMNShape> <bpmndi:BPMNEdge bpmnElement=&quot;_1-_2&quot; > <di:waypoint x=&quot;40&quot; y=&quot;40&quot; /> <di:waypoint x=&quot;136&quot; y=&quot;40&quot; /> </bpmndi:BPMNEdge> <bpmndi:BPMNEdge bpmnElement=&quot;_2-_3&quot; > <di:waypoint x=&quot;136&quot; y=&quot;40&quot; /> ...

So.. we have a way of looking at business processes and a way of specifying them..

Eclipse-based and web-based editor

Pluggable persistence and transactions (JPA / JTA)

Pluggable human task service based on WS-HumanTask

Management console (process instance management, task lists, task form management, and reporting)

History logging (querying / monitoring / analysis)

Etc..

jBPM application architecture Core Services Business Analyst End User Developer Rules Core Engine Guvnor Repository Eclipse Editor Web-Based Designer History Log Task Service jBPM Console Your Application Your Services

What does jBPM Designer do?

Demo

Summary

Supports the jBPM BPMN subset

jBPM Designer Features 1. Shape repository panel 2. Canvas 3. Properties panel 4. Toolbar 5. Footer 6. Process information

Designer: Shape Menu 1. Connection section 2. Morphing section

human task data I/O parameters and associations

(HTML/Javascript) Source immediately available

Generated forms are stored in Guvnor

All forms are fully usable inside jBPM console

Each form includes basic JavaScript form validation à à

Obligatory introduction to project

Demo!

Summary (AKA The End)

The Slide that you guys look at while I switch to the demo! Bonus: how many (full or partial) circles are on this slide?

5. Run process!

Summary

Google+: Geoffrey De Smet & Marco Rietveld

IRC: #drools, #droolsdev and #jbpm on Codehaus

http://mainthing.ru/wp-content/uploads/2010/12/battleship-en.png

http://www.slideshare.net/krisverlaenen/jbpm5-argentina-workshop

JBPM online documentation: http://docs.jboss.org/jbpm/v5.2/userguide/