trading_system_1.epl: add CurrentTickWindow

epl/trading_system_1.epl

@@ -1,4 +1,4 @@
--- test.epl - sample setup
+-- trading_system_1.epl
 --
 -- Statements must be separated by an empty line.
 
@@ -24,6 +24,15 @@ create constant variable int SMASize = 5
 -- How many ticks to store for Ref() access
 create constant variable int RefSize = 5
 
+
+--
+-- A named window that contains the current tick
+--
+
+create window CurrentTickWindow#length(1) as TickEvent
+
+insert into CurrentTickWindow select * from TickEvent
+
 
 --
 -- Trading window