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Eclipse Plug-in Development Beginner's Guide

You're reading from   Eclipse Plug-in Development Beginner's Guide Extend and customize Eclipse

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Product type Paperback
Published in Aug 2016
Publisher
ISBN-13 9781783980697
Length 458 pages
Edition 2nd Edition
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Author (1):
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Alex Blewitt Alex Blewitt
Author Profile Icon Alex Blewitt
Alex Blewitt
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Toc

Table of Contents (17) Chapters Close

Preface 1. Creating Your First Plug-in 2. Creating Views with SWT FREE CHAPTER 3. Creating JFace Viewers 4. Interacting with the User 5. Working with Preferences 6. Working with Resources 7. Creating Eclipse 4 Applications 8. Migrating to Eclipse 4.x 9. Styling Eclipse 4 Applications 10. Creating Features, Update Sites, Applications, and Products 11. Automated Testing of Plug-ins 12. Automated Builds with Tycho 13. Contributing to Eclipse A. Using OSGi Services to Dynamically Wire Applications B. Pop Quiz Answers Index

Services overview

In an Eclipse or OSGi runtime, each individual bundle is its own separate module, which has explicit dependencies on library code via Import-Package, Require-Bundle, or Require-Capability. These express static relationships and provide a way of configuring the bundle's classpath.

However, this presents a problem. If services are independent, how can they use contributions provided by other bundles? In Eclipse's case, the Extension Registry provides a means for code to look up providers. In a standalone OSGi environment, OSGi services provide a similar mechanism.

A service is an instance of a class that implements a service interface. When a service is created, it is registered with the services framework under one (or more) interfaces, along with a set of properties. Consumers can then get the service by asking the framework for implementers of that specific interface.

Note

Services can also be registered under an abstract class, but this is not recommended. Providing...

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