g = Graph()

        for s in self.graph.triples(ALLSTMTS, uri):

            g.add(s)

        return g

    def addClient(self, updateUri, label):

        [self.clients.remove(c)

         for c in self.clients if c.updateUri == updateUri]

        log.info("new client %s at %s" % (label, updateUri))

        self.clients.append(Client(updateUri, label, self))

        self.sendClientsToAllLivePages()

    def sendClientsToAllLivePages(self):

        sendToLiveClients({"clients":[

            dict(updateUri=c.updateUri, label=c.label)

            for c in self.clients]})

class GraphResource(PrettyErrorHandler, cyclone.web.RequestHandler):

    def get(self):

        accept = self.request.headers.get('accept', '')

        format = 'n3'

        if accept == 'text/plain':

            format = 'nt'

        self.write(self.settings.db.graph.serialize(format=format))

class Patches(PrettyErrorHandler, cyclone.web.RequestHandler):

    def __init__(self, *args, **kw):

        cyclone.web.RequestHandler.__init__(self, *args, **kw)

        p = makePatchEndpointPutMethod(self.settings.db.patch)

        self.put = lambda: p(self)

    def get(self):

        pass

class GraphClients(PrettyErrorHandler, cyclone.web.RequestHandler):

    def get(self):

        pass

    def post(self):

        upd = self.get_argument("clientUpdate")

        try:

            self.settings.db.addClient(upd, self.get_argument("label"))

        except:

            import traceback

            traceback.print_exc()

            raise