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MarketDataLib/Utility/HolidayCache.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using MarketData.Utils;
+using MarketData.DataAccess;
+
+namespace MarketData.Utils
+{
+  public class HolidayCache
+  {
+    private static HolidayCache instance=null;
+    private Dictionary<DateTime,DateTime> holidays=null;
+
+    private HolidayCache()
+    {
+      holidays=HolidayDA.GetHolidays();
+    }
+    public static HolidayCache GetInstance()
+    {
+      lock(typeof(HolidayCache))
+      {
+        if(null==instance) instance=new HolidayCache();
+        return instance;
+      }
+    }
+    public bool IsHoliday(DateTime dateTime)
+    {
+      lock(instance)
+      {
+        if(null==holidays) return false;
+        return holidays.ContainsKey(dateTime);
+      }
+    }
+  }
+}