Diff: api/TickerResourceObserver.cpp

Revision:

61:143beb6d8800

Parent:

44:dac601597b0e

--- a/api/TickerResourceObserver.cpp	Sat Sep 05 20:14:22 2015 +0000
+++ b/api/TickerResourceObserver.cpp	Sun Sep 06 03:16:02 2015 +0000
@@ -44,7 +44,16 @@
  // notifier
  void TickerResourceObserver::observationNotifier() {
      if (this->isObserving() == true && this->getResource() != NULL && nsdl_endpoint_is_registered() == true) {
-         this->getResource()->observe();
+         //
+         // implementsObservation(): This switch denotes whether this ticker resource generates its own observations or relies on the ticker (time-based) mechanism.
+         //   -- if resource itself doesn't implement it, then we can call notify() with the get() on each heartbeat of the tickered resource (see note below)
+         //   -- otherwise, we let the resource itself call observe() as part of its observation implementation
+         //
+         // note: this is independent of whether the resource, when declared, is defined as an observable resource or not.  If not, then notify() wont be called 
+         //       as there will be no observations for this resource regardless of this switch value. 
+         //
+         bool do_notify = !(this->getResource()->implementsObservation());
+         this->getResource()->observe(do_notify);
          //__ticker_led = !__ticker_led;
      }
  }