CODEWITHSUNDEEP
javadependency-injectioneclipse-rcpe4
Trump
Trump

Reputation: 13

How to inject custom singleton bean in E4 application?

Can someone please explain me how to use Eclipse E4 DI feature to inject my custom services/providers?.

@Singleton
public class ConnectionPool {
  // should be a singleton
}

public class MyService implements IMyService {
    @Inject
    ConnectionPool pool;
}

// referenced in application model
public class SamplePart {

    @Inject
    IMyService myService;

    @PostConstruct
    public void createComposite(Composite parent) {
       myService.doSomething();
    }
}

Or is it possible to use Google Guice (for example) together with Eclipse DI?

I tried few examples (like this) but it's not working for me

Upvotes: 1

Views: 924

Answers (1)

greg-449
greg-449

Reputation: 111142

You need to add the @Creatable annotation to ConnectionPool (org.eclipse.e4.core.di.annotations.Creatable):

@Singleton
@Creatable
public class ConnectionPool

You could also use an OSGi service for the service. It is also possible to create the service in an AddOn or in the the application LifeCycle class. You can also use a ContextFunction to create a service.

Upvotes: 2

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