OSGi : Develop Simple Apps

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OSGi Activities

• Start and run the Eclipse for OSGi as installed in the previous lecture.
• Open the Subversion Perspective in Eclipse for OSGi.
• Check out the Simple Sample from OSGi Course Repository
• Run the sample and change it.
• Define the main steps involved in developing OSGi applications.
• Write a small tutorial (main steps) about using Eclipse to develop OSGi applications.

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Start the lab activities in the order defined below:

1. Check out the Service Interface
2. Check out the Service Provider
3. Check out the Service Consumer

Steps for Building Bundels

1. Study the Interfaces

• Bundle
• BundleContext
• BundleActivator

2. Define the Bundle that provide the service (Provider Bundle)

2.1 Define the Java Interface that exposes the services

Let us suppose that you want to define a service that allows the user to find a book from the book isbn. Then the interface should look similare with this one:

package cs.ecl.osgi.simple.bookfinder;

public interface BookFinder {
	Book findBook(int isbn) throws BookNotFoundException;
}