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  • Book Overview & Buying OSWorkflow: A guide for Java developers and architects to integrating open-source Business Process Management
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OSWorkflow: A guide for Java developers and architects to integrating open-source Business Process Management

OSWorkflow: A guide for Java developers and architects to integrating open-source Business Process Management

By : DIEGO ADRIAN NAYA LAZO
4.6 (5)
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OSWorkflow: A guide for Java developers and architects to integrating open-source Business Process Management

OSWorkflow: A guide for Java developers and architects to integrating open-source Business Process Management

4.6 (5)
By: DIEGO ADRIAN NAYA LAZO
Buy this Book

Overview of this book

OSWorkflow is an open-source workflow engine written entirely in Java with a flexible approach and a technical user-base target. It is released under the Apache License. You can create simple or complex workflows, depending on your needs. You can focus your work on the business logic and rules. No more Petri Net or finite state machine coding! You can integrate OSWorkflow into your application with a minimum of fuss. OSWorkflow provides all of the workflow constructs that you might encounter in real-life processes, such as steps, conditions, loops, splits, joins, roles, etc.This book explains in detail all the various aspects of OSWorkflow, without assuming any prior knowledge of Business Process Management. Real-life examples are used to clarify concepts.
Table of Contents (13 chapters)
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OSWorkflow
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OSWorkflow
Credits
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Credits
About the Author
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About the Author
About the Reviewers
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About the Reviewers
Introduction
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Introduction
Lock Free Chapter
1
BPM and Workflow Basics
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BPM and Workflow Basics
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Business Process Orientation
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What's a BPMS?
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Different Kinds of BPMS
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Components of a BPM Solution
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Open-Source BPMS
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Summary
2
OSWorkflow Introduction and Basics
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OSWorkflow Introduction and Basics
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Downloading and Installing OSWorkflow
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Navigating the Sample User Interface
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OSWorkflow Basics
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Setting Status and Old Status Values
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Visual Process Modeling
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Ways to Implement OSWorkflow
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Summary
3
Adding Code to our Definitions
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Adding Code to our Definitions
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How to Deal with Transient Data
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PropertySet and Transient Variables
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Adding Code to our Definition
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Other Useful Descriptor Concepts
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Summary
4
Using OSWorkflow in your Application
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Using OSWorkflow in your Application
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OSWorkflow Configuration
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Embedding OSWorkflow into your Application
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Persisting Instance Information
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Unit Testing your Workflow
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Integrating with Spring
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Workflow Security
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Summary
5
Integrating Business Rules with JBoss Rules
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Integrating Business Rules with JBoss Rules
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Incorporating Business Logic into Business Processes
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Simple Logic with Conditional Results
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Complex Business Logic
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Integrating with OSWorkflow
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Summary
6
Task Scheduling with Quartz
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Task Scheduling with Quartz
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What is Quartz?
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Trigger Functions
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Scheduling a Job
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Scheduling from a Workflow Definition
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JobStores
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Example Application—Customer Support
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Example Application—Claims Processing
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Summary
7
Complex Event Processing
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Complex Event Processing
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Complex Event Processing (CEP)
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What is Esper?
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Integration with OSWorkflow
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Real-World Examples
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Summary
8
Dashboards with Pentaho
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Dashboards with Pentaho
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What is Pentaho?
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Pentaho Requirements
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Downloading and Installing Pentaho
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Setting up Pentaho to use the OSWorkflow Database
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Using the Design Studio to Create our First Chart
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Useful Charts for BAM Consoles
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Summary

Integration with OSWorkflow

This section discusses the Esper integration with OSWorkflow to process business event data and react with user-defined patterns.

Esper Function Provider

To enable Esper functionality inside an OSWorkflow definition, we must create a way to emit events from OSWorkflow into the Esper engine.

OSWorkflow can provide this extension via a custom FunctionProvider. This FunctionProvider will emit events into the engine. The code for the class is as follows:

package packtpub.osw.cep;
import java.util.Map;
import net.esper.client.*;
import com.opensymphony.module.propertyset.PropertySet;
import com.opensymphony.util.BeanUtils;
import com.opensymphony.workflow.FunctionProvider;
import com.opensymphony.workflow.WorkflowException;
/**
* Function provider that sends an event to the esper engine.
*/
public class PushEventFunctionProvider implements FunctionProvider
{
public void execute(Map transientVars, Map args, PropertySet ps)
throws WorkflowException
{
// the event POJO...
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Programming languages
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OSWorkflow: A guide for Java developers and architects to integrating open-source Business Process Management
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