public class MyPlugin implements BundleActivator {
	private ServiceRegistration<?> registration;
	
	@Override
	public void start(BundleContext bundleContext) throws Exception {
		 
	    // Use SLF4J as LoggerProvider for e4
	    ILoggerProvider logService = new ILoggerProvider() {
	    	@Override
	    	public org.eclipse.e4.core.services.log.Logger getClassLogger(Class<?> clazz) {
	    		return new Slf4jLoggerWrapper(LoggerFactory.getLogger(clazz));
	    	}
	    };
	    registration = bundleContext.registerService(ILoggerProvider.class, logService, null);
	}

	@Override
	public void stop(BundleContext bundleContext) throws Exception {
		registration.unregister();
		registration = null;
	} 
}

@Override
	public void info(Throwable t, String message) {
		if (this.isInfoEnabled()) {
			this.log.info(buildLogMessage(message, null), t);
		}
	}

@Creatable
public class Logger extends org.eclipse.e4.core.services.log.Logger{
	private org.apache.log4j.Logger log = null;
	protected static char sign = '#';

	@Inject
	@SuppressWarnings("unchecked")
	public Logger(@Active MContribution contribution) {	
		String uri = contribution.getContributionURI();
		String[] uriArray = uri.split("\\.");
		String uriClass = uriArray[uriArray.length-1];
		this.log = org.apache.log4j.Logger.getLogger(uriClass);

	}
        ....