Book Image

JBoss Tools 3 Developers Guide

Book Image

JBoss Tools 3 Developers Guide

Overview of this book

JBoss Tools consist of the best Java frameworks and technologies placed together under the same "roof". Discovering JBoss Tools is like exploring a cave; at first everything seems unknown and complicated, but once you become familiar with the main features of the Tools, you will start to feel at home. This is the first book in the market on JBoss Tools, waiting to assist you to throw away all the tiny, dedicated tools you have used earlier, thus helping you to reduce the time you spend on developing a Java application. This book will explore the tools that will help you to build Hibernate, Seam, JSF, Struts, Web Services, jBPM, ESB, and so on and show you how to use them through screenshots, examples, and source code. JBoss Tools comes with a set of dedicated wizards, generators, editors, reverse engineering capabilities, configuration files, templates, syntax highlighting, and more for each of these technologies. Just choose the technologies, and JBoss Tools will glue them together in amazing Java web applications. This book will show you how to develop a set of Java projects using a variety of technologies and scenarios. Everything is described through JBoss Tools "eyes". After we settle the project (or scenario) that will be developed, we configure the proper environment for the current tool (the selected projects cover the main components of a web application, with regard to the backstage technology). We continue by exploring the tool to accomplish our tasks and develop the project's components. A cocktail of images, theoretical aspects, source code, and step-by-step examples will offer you a complete insight into every tool. At the end, we deploy and test the project. In addition, every chapter is rich with pure notions about the underlying technology, which will initiate into you or remind you of the basic aspects of it. It will also show you complete and functional applications, and get you familiar with the main aspects of every tool. By the end you will have enough information to successfully handle your own projects with JBoss Tools.
Table of Contents (16 chapters)
JBoss Tools 3 Developer's Guide
Credits
About the Author
About the Reviewers
Preface

jBPM GPD Editor


A process definition is based on a graph that contains nodes, transitions, actions, one start-state, and one end-state. In this model, the execution starts from the start-state, flows through the graph and stops at the end-state. Nodes are commands executed when they are encountered, and transitions are the highways of the graph, directing the flow execution between nodes. Actions are pieces of Java code that are executed by the jPDL engine for following a specific logic. Most of the time, actions are encountered in nodes, but they can also be placed in transitions.

All these components can be easily developed through the jBPM GPD Editor, which can assist us to create the desired graph. From here, we can create process definitions, attach action handlers to events, edit definition source, create process archives, test process definitions, and so on.

This designer contains four views (tabs): Diagram, Deployment, Design, and Source. Next, we will discuss each one of these and...