Book Image

Mastering jBPM6

By : Simone Fiorini, Arun V Gopalakrishnan
Book Image

Mastering jBPM6

By: Simone Fiorini, Arun V Gopalakrishnan

Overview of this book

Table of Contents (18 chapters)
Mastering jBPM6
About the Authors
About the Reviewers

Parameters, variables, and data

Most of the time, business processes are data-driven processes: tasks handle variables, and rules handle facts; you will not be asked to draw a BPMN diagram without handling variables, parameters, objects, and states coming from external systems, user input, and other sources. A majority of the jBPM constructs are useless without data. Let us clarify the basics:

  • Parameters: These are the data input coming from the user through the API. The user can pass parameters during process creation, at a human task completion, or into a service task for a Web service call.

  • Variables: Variables are objects living in the scope of a single process instance. Variables can be created directly inside a process instance construct (for example, Script Activity and Data Object) or can be mapped from/to other variables (Data Input/Output Mapping) defined in another scope, for example, from the main process to a subprocess, from the process to a human task, and so on.

  • Globals:...