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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

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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)
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
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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

Trigger Functions

trigger-functions are a special type of OSWorkflow function designed specifically for job scheduling and external triggering. These functions are executed when the Quartz trigger fires, thus the name. trigger-functions are not associated with an action and they have a unique ID. You shouldn't execute a trigger-function in your code.

To define a trigger-function in the definition, put the trigger-functions declaration before the initial-actions element. 

…
<trigger-functions>
<trigger-function id="10">
<function type="beanshell">
<arg name="script">
propertySet.setString("triggered", "true");
</arg>
</function>
</trigger-function>
</trigger-functions>
<initial-actions>
…

This XML definition fragment declares a trigger-function (having an ID of 10), which executes a beanshell script. This script will put a named property inside the PropertySet of the instance but you can define a trigger-function just like any other Java...

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