[WIP][ONOS-3722] Augment TableModel with Annotations Mechanism

Change-Id: I815ce0b0fde254dd730153c34905d9454f019d9a
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/ProcessorViewMessageHandler.java b/web/gui/src/main/java/org/onosproject/ui/impl/ProcessorViewMessageHandler.java
index 00b221b..1353538 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/ProcessorViewMessageHandler.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/ProcessorViewMessageHandler.java
@@ -64,6 +64,8 @@
 
     // handler for packet processor table requests
     private final class ProcessorDataRequest extends TableRequestHandler {
+        private static final String NO_ROWS_MESSAGE = "No packet processors found";
+
         private ProcessorDataRequest() {
             super(PROCESSOR_DATA_REQ, PROCESSOR_DATA_RESP, PROCESSORS);
         }
@@ -74,6 +76,11 @@
         }
 
         @Override
+        protected String noRowsMessage() {
+            return NO_ROWS_MESSAGE;
+        }
+
+        @Override
         protected TableModel createTableModel() {
             TableModel tm = super.createTableModel();
             tm.setFormatter(AVG_MS, NumberFormatter.TO_5DP);