Java – iPOJO – @ reference does not inject services

2020-08-02 • Java

There is an interface iservice in a package, which is implemented by serviceimpl class:

public interface IService
{
    void doSomething();
}

@Component
@Provides
@Instantiate
public class ServiceImpl implements IService
{
    public void doSomething()
    {
    }
}

In the second package, I use the services provided in the first package. There is another class serviceconsumer (a gogo shell command; excluding specific comments):

@Component
@Provides
@Instantiate
public class ServiceConsumer
{
    @Requires
    private IService service;

    public doIt()
    {
        service.doSomething();
    }

}

When I import and start two bundles in Felix, I can see that all my services are instantiated correctly using iPOJO: instance, and serviceimpl provides iservice However, when doit () is executed, the service is null

Since iservice seems to be available, I want @ requires to inject a good instance, but I don't seem to do so

I think I have something very obvious, but I don't know what it is

Solution

You also created metadata XML?

AFAIK you can also use the Maven plug-in to generate it, as shown here http://felix.apache.org/site/ipojo-hello-word-maven-based-tutorial.html

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Java