Service Builder was a necessity in 6.2, since it was the only way to create services. But it was a workaround and a hack to use fake entities.
In Liferay 7 I prefer to write SomeService Interface, SomeServiceImpl and write an activator.
That's all the code I need to start:
public interface SomeService {
public void doSomething();
}
public class SomeServiceImpl implements SomeService {
public void doSomething() {...}
}
public class SomeServiceActivator implements BundleActivator {
@Override
public void start(BundleContext bundleContext) throws Exception {
Registry registry = RegistryUtil.getRegistry();
_serviceRegistration = registry.registerService(SomeService.class, new SomeServiceImpl());
}
@Override
public void stop(BundleContext bundleContext) throws Exception {
if (_serviceRegistration != null) {
_serviceRegistration.unregister();
_serviceRegistration = null;
}
}
private ServiceRegistration<someservice> _serviceRegistration = null;
}
</someservice>
And if I need it as a rest service I can add the JSONWebService annotation and *magic* it is even added to /api/jsonws. IMHO it doesn't get any simpler than that. (Actually I prefer to not use JSONWebservice but jax-rs, but it would be possible)
