From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001
From: Sven Eisenhauer <sven@sven-eisenhauer.net>
Date: Fri, 10 Nov 2023 15:11:48 +0100
Subject: add new repo

---
 .../examples/timer/CleanDayLimitOrdersBean.java    | 67 ++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Rima Examples/src/examples/timer/CleanDayLimitOrdersBean.java

(limited to 'Master/Reference Architectures and Patterns/EJB 3.0 Code/Rima Examples/src/examples/timer/CleanDayLimitOrdersBean.java')

diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Rima Examples/src/examples/timer/CleanDayLimitOrdersBean.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Rima Examples/src/examples/timer/CleanDayLimitOrdersBean.java
new file mode 100644
index 0000000..1f90550
--- /dev/null
+++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Rima Examples/src/examples/timer/CleanDayLimitOrdersBean.java	
@@ -0,0 +1,67 @@
+package examples.timer;
+
+import javax.ejb.*;
+import javax.annotation.Resource;
+
+import java.util.Calendar;
+import java.util.TimeZone;
+import java.util.SimpleTimeZone;
+import java.util.GregorianCalendar;
+import java.util.Date;
+
+@Stateless
+public class CleanDayLimitOrdersBean implements CleanDayLimitOrders {
+    
+    @Resource private SessionContext ctx;
+            
+    public void cleanPeriodicallyDayLimitOrders()
+    {
+        // Get hold of the eastern time zone assuming that the securities are being 
+        // traded on NYSE and NASDAQ exchanges.
+        String[] timezoneIDs = TimeZone.getAvailableIDs (-5 * 60 * 60 * 1000);
+
+	SimpleTimeZone est = new SimpleTimeZone (-5 * 60 * 60 * 1000, timezoneIDs[0]);
+
+        // Provide the rules for start and end days of daylight savings time.
+	est.setStartRule (Calendar.APRIL, 1, Calendar.SUNDAY, 2 * 60 * 60 * 1000);
+	est.setEndRule (Calendar.OCTOBER, -1, Calendar.SUNDAY, 2 * 60 * 60 * 1000);
+
+        // Get hold of a calendar instance for the eastern time zone.
+	Calendar cal = new GregorianCalendar(est);
+
+        // Set the calendar to the current time.
+	cal.setTime (new Date ());
+	
+        // Calculate the difference between now and market close i.e. 4 PM Eastern.
+	int hourofday = cal.get (cal.HOUR_OF_DAY);
+	int minuteofhour = cal.get (cal.MINUTE);
+
+        // If this method is invoked after the market close, then set the timer expiration
+        // immediately i.e. start=0. Otherwise, calculate the milliseconds that needs
+        // to elapse until first timer expiration.
+	long start = 0;
+	if (hourofday < 16)
+	{
+            int hourdiff = 16 - hourofday - 1;
+            int mindiff = 60 - minuteofhour;
+			
+            start = (hourdiff * 60 * 60 * 1000) + (mindiff * 60 * 1000);
+        }
+
+        // Finally, get hold of the timer service instance from EJBContext object and create the 
+        // recurrent expiration timer.
+        TimerService timerService = ctx.getTimerService();
+        Timer timer = timerService.createTimer(start, 86400000, null);
+	
+        System.out.println("CleanDayLimitOrdersBean: Timer created to first expire after " + start + " milliseconds.");
+    }
+    
+    @Timeout
+    public void handleTimeout(Timer timer)
+    {
+        System.out.println("CleanDayLimitOrdersBean: handleTimeout called.");
+
+        // Put here the code for cleaning the database of day limit orders that have
+        // not been executed.
+     }
+}
\ No newline at end of file
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