Java Code Examples for org.osgi.framework.Constants#SCOPE_BUNDLE

/**
 * Construct a ServiceRegistration for a registered service.
 *
 * @param b Bundle providing service.
 * @param s Service object.
 * @param props Properties describing service.
 */
ServiceRegistrationImpl(BundleImpl b, Object s, String ss, PropertiesDictionary props) {
  fwCtx = b.fwCtx;
  bundle = b;
  service = s;
  properties = props;
  reference = new ServiceReferenceImpl<S>(this);
  available = true;
  scope = ss;
  if (scope == Constants.SCOPE_BUNDLE) {
    serviceInstances = new HashMap<Bundle, S>();
  } else if (scope == Constants.SCOPE_PROTOTYPE) {
    serviceInstances = new HashMap<Bundle, S>();
    prototypeServiceInstances = new HashMap<Bundle, List<S>>();
  }
}
 

private void parseService(XmlPullParser p)
    throws IOException, XmlPullParserException
{
  if (services != null) {
    throw new IllegalXMLException(
                                  "More than one service-tag in component: \""
                                      + componentName + "\"", p);
  }
  ArrayList<String> sl = new ArrayList<String>();
  if (!immediateSet) {
    immediate = false;
  }
  /* If there is an attribute in the service tag */
  for (int i = 0; i < p.getAttributeCount(); i++) {
    if (scrNSminor < 3 && p.getAttributeName(i).equals("servicefactory")) {
      isServiceFactory = parseBoolean(p, i);
      if (isServiceFactory) {
        if (factory != null) {
          throw new IllegalXMLException("Attribute servicefactory in service-tag "
                                        + "cannot be set to \"true\" when component "
                                        + "is a factory component", p);
        }
        if (immediate) {
          throw new IllegalXMLException("Attribute servicefactory in service-tag "
                                        + "cannot be set to \"true\" when component "
                                        + "is an immediate component", p);
        }
        scope = Constants.SCOPE_BUNDLE;
      }
    } else if (scrNSminor > 2 && p.getAttributeName(i).equals("scope")) {
      scope = p.getAttributeValue(i);
      if (!Constants.SCOPE_SINGLETON.equals(scope)) {
        isServiceFactory = true;
        if (!Constants.SCOPE_BUNDLE.equals(scope) && !Constants.SCOPE_PROTOTYPE.equals(scope)) {
          throw new IllegalXMLException("Attribute scope in service-tag must be set to "
                                        + "\"bundle\", \"prototype\" or \"singleton\"", p);
        }
        if (factory != null) {
          throw new IllegalXMLException("Attribute scope in service-tag must be "
                                        + "set to \"singleton\" when component "
                                        + "is a factory component", p);
        }
        if (immediate) {
          throw new IllegalXMLException(
                                        "Attribute scope in service-tag must be "
                                        + "set to \"singleton\" when component "
                                        + "is an immediate component", p);
        }
      }
    } else {
      unrecognizedAttr(p, i);
    }
  }
  int event = p.next();
  while (event != XmlPullParser.END_TAG) {
    if (event != XmlPullParser.START_TAG) {
      event = p.next();
      continue;
    }
    if ("provide".equals(p.getName())) {
      String interfaceName = null;
      for (int i = 0; i < p.getAttributeCount(); i++) {
        if (p.getAttributeName(i).equals("interface")) {
          interfaceName = p.getAttributeValue(i);
        } else {
          throw new IllegalXMLException("Unrecognized attribute \""
                                        + p.getAttributeName(i)
                                        + "\" in provide-tag", p);
        }
      }
      if (interfaceName == null) {
        missingAttr(p, "interface");
      }
      sl.add(interfaceName);
    }
    skip(p);
    event = p.getEventType();
  }
  p.next();
  /* check if required attributes has been set */
  if (sl.isEmpty()) {
    throw new IllegalXMLException("Service-tag did not contain a proper provide-tag",
                                  p);
  }
  services = sl.toArray(new String[sl.size()]);
}
 

/**
 * 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;
}