6. Core Architecture | Mastering jBPM 5

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Mastering jBPM 5

By : Simone Fiorini, Arun V Gopalakrishnan

3 (6)

Mastering jBPM 5

3 (6)

By: Simone Fiorini, Arun V Gopalakrishnan

Overview of this book

If you are a designer or developer who wants to build and operate business process-centric applications, then this book is for you. Knowledge of the basic concepts of application development in Java will be helpful in following the concepts covered in the book, but is not necessary.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Business Process Modeling – Bridging Business and Technology

1. Business Process Modeling – Bridging Business and Technology

Business process management

The business process model and notation

Business process management as applied in industry

Design patterns in business process modeling

Introducing jBPM

The business logic integration platform

Summary

2. Building Your First BPM Application

2. Building Your First BPM Application

Installing the jBPM tool stack

Creating your first jBPM project

Embedding jBPM in a standalone Java application

Change management – updating deployed process definitions

Summary

3. Working with the Process Designer

3. Working with the Process Designer

Web-based tooling

Eclipse-based tooling

Summary

4. Operation Management

4. Operation Management

An overview of the KIE workbench, Git, and Maven

An overview of the kie-config-cli tool

KIE deployments

Managing jobs and asynchronous commands' execution

Process definition conversion

BAM

Summary

5. BPMN Constructs

5. BPMN Constructs

Parameters, variables, and data

Sequence flow

Gateways

Events

Activities

Summary

6. Core Architecture

6. Core Architecture

The KIE API

RuntimeManager service and the engine

KieSession

Human Task service

Audit and history logs

Persistence and transactions

Summary

7. Customizing and Extending jBPM

7. Customizing and Extending jBPM

Custom process nodes

jBPM identity management

jBPM serialization

Summary

8. Integrating jBPM with Enterprise Architecture

8. Integrating jBPM with Enterprise Architecture

Setting the context

Services provided by jBPM

Creating custom workitem handlers

Integrating with JEE

Integrating in SOA and EDA environments

jBPM as a remote service

Summary

9. jBPM in Production

9. jBPM in Production

Scalability

Availability

Security

Maintainability

Fault tolerance

Summary

A. The Future

A. The Future

Business programming

Convergence of enterprise architectures for real-time and predictive analytics

B. jBPM BPMN Constructs Reference

B. jBPM BPMN Constructs Reference

Tasks

Subprocesses

Start events

End events

Catching intermediate events

Throwing intermediate events

Gateways

Data objects

Swimlanes

Artifacts

Index

Index

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Human Task service

We introduced the human tasks in the previous chapter; we described the human task state transitions, task rule assignments, and task operations performed by the stakeholders.

You can get the org.kie.api.task.TaskService task service from RuntimeEngine (the getTaskService() method), which is a wrapper for the service; the task service is created and wrapped into RuntimeEngine (and the underlying session) by RuntimeManager, which uses TakServiceFactory:

InternalTaskService internalTaskService = (InternalTaskService) taskServiceFactory.newTaskService();

The factory used to instantiate TaskService is as follows:

LocalTaskServiceFactory: To be used in non-CDI environments

The factory configures the task service with the following references:

EntityManagerFactory instance (taken from RuntimeEnvironment).
UserGroupCallback (taken from RuntimeEnvironment). If no custom UserGroupCallback implementation is provided, a default MvelUserGroupCallbackImpl is used; this loads the UserGroupsAssignmentsOne...

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