org.osgi.framework.ServiceFactory Java Examples

boolean ungetService(Bundle bundle) {
    synchronized (this.useCounters) {
        if (this.service == null) {
            return false;
        }
        Integer num = (Integer) this.useCounters.get(bundle);
        if (num == null) {
            return false;
        } else if (num.intValue() == 1) {
            this.useCounters.remove(bundle);
            if (this.isServiceFactory) {
                ((ServiceFactory) this.service).ungetService(bundle, this.registration, this.cachedServices.get(bundle));
                this.cachedServices.remove(bundle);
            }
            return false;
        } else {
            this.useCounters.put(bundle, Integer.valueOf(num.intValue() - 1));
            return true;
        }
    }
}
 

/**
 * DOCUMENT ME!
 *
 * @param context DOCUMENT ME!
 *
 * @throws BundleException DOCUMENT ME!
 */
public void start(BundleContext context) throws BundleException {
    ensureSecurityManager();
    this.bc = context;

    try {
        O2J = new Osgi2Jini();
        O2J.open();
    } catch (Exception o2j) {
        Debug.printDebugInfo(10, "OSGi to Jini bridge not started", o2j);
    }

    try {
        J2O = new JiniServiceFactory();
        jiniServiceFactory = bc.registerService("org.osgi.service.jini.JiniDriver",
                (ServiceFactory) J2O, null);
    } catch (Exception j2o) {
        Debug.printDebugInfo(10, "Jini to OSGi bridge not started", j2o);
    }
}
 

ServiceReferenceImpl(Bundle bundle, Object obj, Dictionary<String, ?> dictionary, String[] strArr) {
    this.useCounters = new HashMap(0);
    this.cachedServices = null;
    if (obj instanceof ServiceFactory) {
        this.isServiceFactory = true;
    } else {
        this.isServiceFactory = false;
        checkService(obj, strArr);
    }
    this.bundle = bundle;
    this.service = obj;
    this.properties = dictionary == null ? new Hashtable() : new Hashtable(dictionary.size());
    if (dictionary != null) {
        Enumeration keys = dictionary.keys();
        while (keys.hasMoreElements()) {
            String str = (String) keys.nextElement();
            this.properties.put(str, dictionary.get(str));
        }
    }
    this.properties.put(Constants.OBJECTCLASS, strArr);
    Dictionary dictionary2 = this.properties;
    String str2 = Constants.SERVICE_ID;
    long j = nextServiceID + 1;
    nextServiceID = j;
    dictionary2.put(str2, Long.valueOf(j));
    Integer num = dictionary == null ? null : (Integer) dictionary.get(Constants.SERVICE_RANKING);
    this.properties.put(Constants.SERVICE_RANKING, Integer.valueOf(num == null ? 0 : num.intValue()));
    this.registration = new ServiceRegistrationImpl();
}
 

/**
 * Registers the specified service factory object with the specified
 * properties under the name of the specified class with the Framework.
 *
 * @see org.osgi.framework.BundleContext#registerService
 */
public <S> ServiceRegistration<S> registerService(Class<S> clazz,
                                                  ServiceFactory<S> factory,
                                                  Dictionary<String, ?> properties)
{
  @SuppressWarnings("unchecked")
  final ServiceRegistration<S> res = (ServiceRegistration<S>)
      registerService(clazz == null ? null
                                    : clazz.getName(),factory,properties);
  return res;
}
 

<S> void callUngetService(final ServiceRegistrationImpl<S> sr,
                          final Bundle b,
                          final S instance)
{
  @SuppressWarnings("unchecked")
  final ServiceFactory<S> srf = (ServiceFactory<S>)sr.service;
  srf.ungetService(b, sr, instance);
}
 

S factorService(final Bundle theBundle, boolean count){
	@SuppressWarnings("unchecked")
	final ServiceFactory<S> factory = (ServiceFactory<S>) service;
	final S factoredService;
	try {
		if(count)
			incrementCounter(theBundle);
		marker = true;
		factoredService = factory.getService(theBundle,
				registration);
		marker = false;
		checkService(factoredService,
				(String[]) properties.get(Constants.OBJECTCLASS));
		// catch failed check and exceptions thrown in factory
	} catch (final IllegalArgumentException iae) {
		if(count)
			decrementCounter(theBundle);
		framework.notifyFrameworkListeners(FrameworkEvent.ERROR,
				bundle, new ServiceException(
						"Invalid service object",
						ServiceException.FACTORY_ERROR));
		return null;
	} catch (final Throwable t) {
		if(count)
			decrementCounter(theBundle);
		framework.notifyFrameworkListeners(FrameworkEvent.ERROR,
				bundle, new ServiceException(
						"Exception while factoring the service",
						ServiceException.FACTORY_EXCEPTION, t));
		return null;
	}
	
	return factoredService;
}
 

@Override
<S> void callUngetService(final ServiceRegistrationImpl<S> sr,
                          final Bundle b,
                          final S instance)
{
  @SuppressWarnings("unchecked")
  final ServiceFactory<S> srf = (ServiceFactory<S>) sr.service;
  AccessController.doPrivileged(new PrivilegedAction<Object>() {
    public Object run()
    {
      srf.ungetService(b, sr, instance);
      return null;
    }
  });
}
 

public void ungetService(S s) {
	if(isPrototype){
		if(services.remove(s)) {
			try {
				final ServiceFactory<S> factory = (ServiceFactory<S>) service;
				factory.ungetService(b, (ServiceRegistration<S>) registration, s);
			} catch (final Throwable t) {
				framework.notifyFrameworkListeners(
					FrameworkEvent.ERROR, b, t);
			}
			if(services.size() == 0){
				if(useCounters.get(b) == 0){
					useCounters.remove(b);
				}
			}
		} else {
			throw new IllegalArgumentException("Service object was not provided "
				+ "by this ServiceObjects instance");
		}
	} else {
		// in case of bundle scope, only unget if this is from the right bundle
		if(isServiceFactory) { 
			if(s != cachedServices.get(b)){
				throw new IllegalArgumentException("Service object was not provided "
						+ "by this ServiceObjects instance");
			}
		}
		ServiceReferenceImpl.this.ungetService(b);
	}
}
 

@Override
<S> S callGetService(final ServiceRegistrationImpl<S> sr, final Bundle b)
{
  return AccessController.doPrivileged(new PrivilegedAction<S>() {
    public S run()
    {
      @SuppressWarnings("unchecked")
      final ServiceFactory<S> srf = (ServiceFactory<S>) sr.service;
      return srf.getService(b, sr);
    }
  });
}
 

@SuppressWarnings("unchecked")
public <S> ServiceRegistration<S> registerService(final Class<S> clazz,
		final ServiceFactory<S> factory, final Dictionary<String, ?> properties) {
	return (ServiceRegistration<S>) registerService(clazz.getName(), 
			factory, properties);
}
 

<S> S callGetService(final ServiceRegistrationImpl<S> sr, final Bundle b) {
  @SuppressWarnings("unchecked")
  final ServiceFactory<S> srf = (ServiceFactory<S>)sr.service;
  return srf.getService(b, sr);
}
 

/**
 * Register a service in the framework wide register.
 *
 * @param bundle The bundle registering the service.
 * @param classes The class names under which the service can be located.
 * @param service The service object.
 * @param properties The properties for this service.
 * @return A {@link ServiceRegistration} object.
 * @exception java.lang.IllegalArgumentException If one of the following is true:
 * <ul>
 * <li>The service object is null.</li>
 * <li>The defining class of the service parameter is not owned by the bundle.</li>
 * <li>The service parameter is not a ServiceFactory and is not an
 * instance of all the named classes in the classes parameter.</li>
 * </ul>
 */
@SuppressWarnings("deprecation")
ServiceRegistration<?> register(BundleImpl bundle,
                                String[] classes,
                                Object service,
                                Dictionary<String, ?> properties)
{
  if (service == null) {
    throw new IllegalArgumentException("Can't register null as a service");
  }
  String scope;
  if (service instanceof ServiceFactory) {
    scope = service instanceof PrototypeServiceFactory ? Constants.SCOPE_PROTOTYPE : Constants.SCOPE_BUNDLE;
  } else {
    scope = Constants.SCOPE_SINGLETON;
  }
  // Check if service implements claimed classes and that they exist.
  for (final String cls : classes) {
    if (cls == null) {
      throw new IllegalArgumentException("Can't register as null class");
    }
    secure.checkRegisterServicePerm(cls);
    if (bundle.id != 0) {
      if (cls.equals(org.osgi.service.packageadmin.PackageAdmin.class.getName())) {
        throw new IllegalArgumentException
          ("Registeration of a PackageAdmin service is not allowed");
      }
      if (cls.equals(PermissionAdmin.class.getName())) {
        throw new IllegalArgumentException
          ("Registeration of a PermissionAdmin service is not allowed");
      }
      if (cls.equals(ConditionalPermissionAdmin.class.getName())) {
        throw new IllegalArgumentException
          ("Registeration of a ConditionalPermissionAdmin service is not allowed");
      }
    }
    if (scope == Constants.SCOPE_SINGLETON) {
      if (!checkServiceClass(service, cls)) {
        throw new IllegalArgumentException
          ("Service object is not an instance of " + cls);
      }
    }
  }

  @SuppressWarnings("rawtypes")
  final ServiceRegistrationImpl<?> res =
    new ServiceRegistrationImpl(bundle, service, scope,
                                new PropertiesDictionary(properties, classes, null, new Long(bundle.id), scope));
  synchronized (this) {
    services.put(res, classes);
    for (final String clazz : classes) {
      List<ServiceRegistrationImpl<?>> s
        = classServices.get(clazz);
      if (s == null) {
        s = new ArrayList<ServiceRegistrationImpl<?>>(1);
        classServices.put(clazz, s);
      }
      final int ip = Math.abs(Util.binarySearch(s, sComp, res) + 1);
      s.add(ip, res);
    }
  }
  final ServiceReference<?> r = res.getReference();
  bundle.fwCtx.perm
    .callServiceChanged(bundle.fwCtx,
                        bundle.fwCtx.listeners.getMatchingServiceListeners(r),
                        new ServiceEvent(ServiceEvent.REGISTERED, r),
                        null);
  return res;
}
 

public boolean isAssignableTo(Bundle bundle, String className) {
  final BundleImpl sBundle = registration.bundle;
  if (sBundle == null) {
      throw new IllegalStateException("Service is unregistered");
  }
  final FrameworkContext fwCtx = sBundle.fwCtx;
  if (((BundleImpl)bundle).fwCtx != fwCtx) {
    throw new IllegalArgumentException("Bundle is not from same framework as service");
  }
  // Check if bootdelegated
  if (fwCtx.isBootDelegated(className)) {
    return true;
  }
  final int pos = className.lastIndexOf('.');
  if (pos != -1) {
    final String name = className.substring(0, pos);
    final Pkg p = fwCtx.resolver.getPkg(name);
    // Is package exported by a bundle
    if (p != null) {
      final BundlePackages rbp = sBundle.current().bpkgs;
      final BundlePackages pkgExporter = rbp.getProviderBundlePackages(name);
      List<BundleGeneration> pkgProvider;
      if (pkgExporter == null) {
        // Package not imported by provide, is it required
        pkgProvider = rbp.getRequiredBundleGenerations(name);
      } else {
        pkgProvider = new ArrayList<BundleGeneration>(1);
        pkgProvider.add(pkgExporter.bg);
      }
      final BundlePackages bb = ((BundleImpl)bundle).current().bpkgs;
      final BundlePackages bbp = bb.getProviderBundlePackages(name);
      List<BundleGeneration> pkgConsumer;
      if (bbp == null) {
        // Package not imported by bundle, is it required
        pkgConsumer = bb.getRequiredBundleGenerations(name);
      } else {
        pkgConsumer = new ArrayList<BundleGeneration>(1);
        pkgConsumer.add(bbp.bg);
      }
      if (pkgConsumer == null) {
        // NYI! Check dynamic import?
        if (bb.isExported(name)) {
          // If bundle only exports package, then return true if
          // bundle is provider.
          return pkgProvider!=null ? pkgProvider.contains(bb.bg) : true;
        } else {
          // If bundle doesn't import or export package, then return true and
          // assume that the bundle only uses reflection to access service.
          return true;
        }
      } else if (pkgProvider == null) {
        // Package not imported by registrar. E.g. proxy registration.
        final Object sService = registration.service;
        if (sService == null) {
          throw new IllegalStateException("Service is unregistered");
        }
        if (sService instanceof ServiceFactory) {
          // Factory, allow.
          return true;
        } else {
          // Use the classloader of bundle to load the class, then check
          // if the service's class is assignable.
          final ClassLoader bCL = bb.getClassLoader();
          if (bCL!=null) {
            try {
              final Class<?> bCls = bCL.loadClass(className);
              // NYI, Handle Service Factories.
              return bCls.isAssignableFrom(sService.getClass());
            } catch (final Exception e) {
              // If we can not load, assume that we are just a proxy.
              return true;
            }
          }
        }
        // Fallback: Always OK when singleton provider of the package
      } else { // Package imported by both parties
        // Return true if we have same provider as service.
        for (final Object element : pkgProvider) {
          if (pkgConsumer.contains(element)) {
            return true;
          }
        }
      }
    } else {
      // Not a package under package control. System package?
      if (name.startsWith("java.") || sBundle == bundle) {
        return true;
      } else {
        // NYI! We have a private service, check if bundle can use it.
        // Now, allow it to handle reflection of service.
        return true;
      }
    }
  }
  return false;
}
 

@Override
public <S> ServiceRegistration<S> registerService(Class<S> type, ServiceFactory<S> sf, Dictionary<String, ?> dctnr) {
    return delegate.registerService(type, sf, dctnr);
}
 

/**
 * unget the service.
 * 
 * @param theBundle
 *            the using bundle.
 * @return <tt>false</tt> if the context bundle's use count for the service
 *         is zero or if the service has been unregistered; <tt>true</tt>
 *         otherwise.
 */
@SuppressWarnings("unchecked")
boolean ungetService(final Bundle theBundle) {
	synchronized (useCounters) {
		if (service == null) {
			return false;
		}
		Integer counter = useCounters.get(theBundle);
		if (counter == null) {
			return false;
		}
		if (counter.intValue() == 1) {
			if (isServiceFactory) {
				try {
					((ServiceFactory<S>) service).ungetService(theBundle,
							registration, cachedServices.get(theBundle));
					// catch exceptions thrown in factory
				} catch (final Throwable t) {
					framework.notifyFrameworkListeners(
							FrameworkEvent.ERROR, bundle, t);
				}
				cachedServices.remove(theBundle);
			} 
			if(isPrototype){
				// check if there is a serviceobjects that could also have used service instances
				if(serviceObjects != null){
					ServiceObjectsImpl so = serviceObjects.get(theBundle);
					if(so != null){
						if(so.services.size() != 0){
							useCounters.put(theBundle, new Integer(0));
							return true;
						}
					}
				}
			}			
			useCounters.remove(theBundle);
			return true;
		} else if(counter.intValue()== 0){
			// prototype services in use don't count here...
			return false;
		} else {
			counter = new Integer(counter.intValue() - 1);
			useCounters.put(theBundle, counter);
			return true;
		}
	}
}
 

/**
 * create a new service reference implementation instance.
 * 
 * @param bundle
 *            the bundle.
 * @param service
 *            the service object.
 * @param props
 *            the service properties.
 * @param clazzes
 *            the interface classes that the service is registered under.
 * @throws ClassNotFoundException
 */
ServiceReferenceImpl(final Concierge framework, final Bundle bundle,
		final S service, final Dictionary<String, ?> props,
		final String[] clazzes) {
	String scope = "singleton";
	if (service instanceof PrototypeServiceFactory) {
		isServiceFactory = true;
		isPrototype = true;
		scope = "prototype";
	} else if(service instanceof ServiceFactory) {
		isServiceFactory = true;
		isPrototype = false;
		scope = "bundle";
	} else {
		isServiceFactory = false;
		isPrototype = false;
		checkService(service, clazzes);
	}

	this.framework = framework;
	this.bundle = bundle;
	this.service = service;
	this.properties = new HashMap<String, Object>(props == null ? 5
			: props.size() + 5);
	if (props != null) {
		for (final Enumeration<String> keys = props.keys(); keys
				.hasMoreElements();) {
			final String key = keys.nextElement();
			properties.put(key, props.get(key));
		}
	}
	properties.put(Constants.OBJECTCLASS, clazzes);
	properties.put(Constants.SERVICE_BUNDLEID, bundle.getBundleId());
	properties.put(Constants.SERVICE_ID, new Long(++nextServiceID));
	final Integer ranking = props == null ? null : (Integer) props
			.get(Constants.SERVICE_RANKING);
	properties.put(Constants.SERVICE_RANKING,
			ranking == null ? new Integer(0) : ranking);
	properties.put(Constants.SERVICE_SCOPE, scope);
	this.registration = new ServiceRegistrationImpl();
}
 

protected ServiceRegistration<Application> registerApplication(
    ServiceFactory<Application> serviceFactory, Object... keyValues) {

    Dictionary<String, Object> properties = new Hashtable<>();

    properties.put(JAX_RS_APPLICATION_BASE, "/test-application");

    for (int i = 0; i < keyValues.length; i = i + 2) {
        properties.put(keyValues[i].toString(), keyValues[i + 1]);
    }

    ServiceRegistration<Application> serviceRegistration =
        bundleContext.registerService(
            Application.class, serviceFactory, properties);

    _registrations.add(serviceRegistration);

    return serviceRegistration;
}
 

protected ServiceRegistration<Application> registerApplication(
    ServiceFactory<Application> serviceFactory, Object... keyValues) {

    Dictionary<String, Object> properties = new Hashtable<>();

    properties.put(JAX_RS_APPLICATION_BASE, "/test-application");

    for (int i = 0; i < keyValues.length; i = i + 2) {
        properties.put(keyValues[i].toString(), keyValues[i + 1]);
    }

    ServiceRegistration<Application> serviceRegistration =
        bundleContext.registerService(
            Application.class, serviceFactory, properties);

    _registrations.add(serviceRegistration);

    return serviceRegistration;
}
 

protected ServiceRegistration<Application> registerApplication(
    ServiceFactory<Application> serviceFactory, Object... keyValues) {

    Dictionary<String, Object> properties = new Hashtable<>();

    properties.put(JAX_RS_APPLICATION_BASE, "/test-application");

    for (int i = 0; i < keyValues.length; i = i + 2) {
        properties.put(keyValues[i].toString(), keyValues[i + 1]);
    }

    ServiceRegistration<Application> serviceRegistration =
        bundleContext.registerService(
            Application.class, serviceFactory, properties);

    _registrations.add(serviceRegistration);

    return serviceRegistration;
}
 

protected ServiceRegistration<Application> registerApplication(
    ServiceFactory<Application> serviceFactory, Object... keyValues) {

    Dictionary<String, Object> properties = new Hashtable<>();

    properties.put(JAX_RS_APPLICATION_BASE, "/test-application");

    for (int i = 0; i < keyValues.length; i = i + 2) {
        properties.put(keyValues[i].toString(), keyValues[i + 1]);
    }

    ServiceRegistration<Application> serviceRegistration =
        bundleContext.registerService(
            Application.class, serviceFactory, properties);

    _registrations.add(serviceRegistration);

    return serviceRegistration;
}
 

protected ServiceRegistration<Application> registerApplication(
    ServiceFactory<Application> serviceFactory, Object... keyValues) {

    Dictionary<String, Object> properties = new Hashtable<>();

    properties.put(JAX_RS_APPLICATION_BASE, "/test-application");

    for (int i = 0; i < keyValues.length; i = i + 2) {
        properties.put(keyValues[i].toString(), keyValues[i + 1]);
    }

    ServiceRegistration<Application> serviceRegistration =
        bundleContext.registerService(
            Application.class, serviceFactory, properties);

    _registrations.add(serviceRegistration);

    return serviceRegistration;
}
 

@Override
public <S> ServiceRegistration<S> registerService(Class<S> aClass, ServiceFactory<S> serviceFactory,
        Dictionary<String, ?> dictionary) {
    throw new UnsupportedOperationException();
}