I have 2 iPOJO Components.
1- A Provider bundle that provides "Hello" service. Below is the implementation
of the component:
package helloipojo;
import helloipojo.service.HelloService;
import org.apache.felix.ipojo.annotations.Component;
import org.apache.felix.ipojo.annotations.Invalidate;
import org.apache.felix.ipojo.annotations.Provides;
import org.apache.felix.ipojo.annotations.Validate;
@Component(name="my-factory")
@Provides
public class HelloServiceImpl implements HelloService{
@Override
public void sayHello() {
System.out.println("Hello iPojo!");
}
@Validate
public void start() throws Exception {
System.out.println("Hello, I am ipojo bundle start method");
}
@Invalidate
public void stop() throws Exception {
System.out.println("Bye Bye, I am ipojo bundle stop method");
}
}
2- Consumer bundle that uses HelloService object as the follwing:
package helloserviceconsumer;
import helloipojo.service.HelloService;
import org.apache.felix.ipojo.annotations.Component;
import org.apache.felix.ipojo.annotations.Invalidate;
import org.apache.felix.ipojo.annotations.Requires;
import org.apache.felix.ipojo.annotations.Validate;
@Component(name="my-consumer-factory")
public class HelloConsumer {
@Requires
HelloService helloObject;
@Validate
private void start() {
// Starting method
//...
helloObject.sayHello();
//...
}
@Invalidate
protected void stop() {
// Stopping method
if(helloObject!=null) { helloObject.sayHello(); }
else System.out.println("hello service GONE!");
}
}
In a seperate Java application, I load these two bundles and start them on
Apache Felix as the following:
Bundle b =
bundleContext1.installBundle("file:C:\\Users\\zaid.almahmoud\\Desktop\\plugins\\HelloService_1.0.0.201401222235.jar");
b.start();
Bundle c =
bundleContext1.installBundle("file:C:\\Users\\zaid.almahmoud\\Desktop\\plugins\\HelloServiceConsumer_1.0.0.201401222257.jar");
c.start();
All the above works fine.
Now, I would like to instantiate these two components dynamically and observe
the consumption of the bundle provider service by the bundle consumer. I used
Instance Declaration, as the following:
DefaultInstanceDeclaration providerDeclaration = new
DefaultInstanceDeclaration(b.getBundleContext(), "my-factory");
providerDeclaration.start();
DefaultInstanceDeclaration consumerDeclaration = new
DefaultInstanceDeclaration(c.getBundleContext(), "my-consumer-factory");
consumerDeclaration.start();
No errors when running the application. However, I could not see the "Hello"
Messages that exists in the start() methods of both the service provider and
consumer. I see absolutely NOTHING. That means the components are not
instantiated correctly. Where did I go wrong? Thanks.
Zaid.
