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MarketDataLib/DataAccess/HolidayDA.cs

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+using System;
+using System.Text;
+using System.Diagnostics;
+using System.Collections.Generic;
+using MySql.Data.MySqlClient;
+using MarketData.MarketDataModel;
+using MarketData.Utils;
+
+namespace MarketData.DataAccess
+{
+  public class HolidayDA
+  {
+    private HolidayDA()
+    {
+    }
+    public static String GetHolidayDescription(DateTime date)
+    {
+      MySqlConnection sqlConnection=null;
+      MySqlDataReader sqlDataReader=null;
+      MySqlCommand sqlCommand=null;
+      String strQuery=null;
+      String description="";
+
+      try
+      {
+        StringBuilder sb=new StringBuilder();
+        sqlConnection=SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("market_data"));
+        sb.Append("select description from MarketHolidays where date='").Append(Utils.SqlUtils.SqlDate(date)).Append("'");
+        strQuery=sb.ToString();
+        sqlCommand=new MySqlCommand(strQuery,sqlConnection);
+        sqlCommand.CommandTimeout=SqlUtils.COMMAND_TIMEOUT;
+        sqlDataReader=sqlCommand.ExecuteReader();
+        if(sqlDataReader.Read())
+        {
+          if(!sqlDataReader.IsDBNull(0)) description=sqlDataReader.GetString(0);
+        }
+        return description;
+      }
+      catch(Exception exception)
+      {
+        MDTrace.WriteLine(LogLevel.DEBUG,exception);
+        return description;
+      }
+      finally
+      {
+        if(null!=sqlCommand) sqlCommand.Dispose();
+        if(null!=sqlDataReader) sqlDataReader.Close();
+        if(null!=sqlConnection) sqlConnection.Close();
+      }
+    } 
+    public static DateTime GetMaxHolidayDate()
+    {
+      MySqlConnection sqlConnection=null;
+      MySqlDataReader sqlDataReader=null;
+      MySqlCommand sqlCommand=null;
+      String strQuery=null;
+      DateTime maxHolidayDate=Utility.Epoch;
+
+      try
+      {
+        StringBuilder sb=new StringBuilder();
+        sqlConnection=SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("market_data"));
+        sb.Append("select max(date) from MarketHolidays");
+        strQuery=sb.ToString();
+        sqlCommand=new MySqlCommand(strQuery,sqlConnection);
+        sqlCommand.CommandTimeout=SqlUtils.COMMAND_TIMEOUT;
+        sqlDataReader=sqlCommand.ExecuteReader();
+        if(sqlDataReader.Read())
+        {
+          if(!sqlDataReader.IsDBNull(0)) maxHolidayDate=sqlDataReader.GetDateTime(0);
+        }
+        return maxHolidayDate;
+      }
+      catch(Exception exception)
+      {
+        MDTrace.WriteLine(LogLevel.DEBUG,exception);
+        return maxHolidayDate;
+      }
+      finally
+      {
+        if(null!=sqlCommand) sqlCommand.Dispose();
+        if(null!=sqlDataReader) sqlDataReader.Close();
+        if(null!=sqlConnection) sqlConnection.Close();
+      }
+    }
+
+    public static bool IsMarketHoliday(DateTime date)
+    {
+      MySqlConnection sqlConnection=null;
+      MySqlDataReader sqlDataReader=null;
+      MySqlCommand sqlCommand=null;
+      String strQuery=null;
+      int recordCount=0;
+
+      try
+      {
+        StringBuilder sb=new StringBuilder();
+        sqlConnection=SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("market_data"));
+        sb.Append("select count(*) from MarketHolidays where date='").Append(Utility.DateTimeToStringYYYYHMMHDD(date)).Append("' ");
+        strQuery=sb.ToString();
+        sqlCommand=new MySqlCommand(strQuery,sqlConnection);
+        sqlCommand.CommandTimeout=SqlUtils.COMMAND_TIMEOUT;
+        sqlDataReader=sqlCommand.ExecuteReader();
+        if(sqlDataReader.Read())
+        {
+          if(!sqlDataReader.IsDBNull(0)) recordCount=sqlDataReader.GetInt32(0);
+        }
+        return 0==recordCount?false:true;
+      }
+      catch(Exception exception)
+      {
+        MDTrace.WriteLine(LogLevel.DEBUG,exception);
+        return false;
+      }
+      finally
+      {
+        if(null!=sqlCommand) sqlCommand.Dispose();
+        if(null!=sqlDataReader) sqlDataReader.Close();
+        if(null!=sqlConnection) sqlConnection.Close();
+      }
+    }
+    public static Dictionary<DateTime,DateTime> GetHolidays()
+    {
+      MySqlConnection sqlConnection=null;
+      MySqlDataReader sqlDataReader=null;
+      MySqlCommand sqlCommand=null;
+      String strQuery=null;
+      Dictionary<DateTime,DateTime> holidays=new Dictionary<DateTime,DateTime>();
+
+      try
+      {
+        StringBuilder sb=new StringBuilder();
+        sqlConnection=SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("market_data"));
+        sb.Append("select date from MarketHolidays order by date desc");
+        strQuery=sb.ToString();
+        sqlCommand=new MySqlCommand(strQuery,sqlConnection);
+        sqlCommand.CommandTimeout=SqlUtils.COMMAND_TIMEOUT;
+        sqlDataReader=sqlCommand.ExecuteReader();
+        while(sqlDataReader.Read())
+        {
+          DateTime holiday=sqlDataReader.GetDateTime(0);
+          if(!holidays.ContainsKey(holiday))holidays.Add(holiday,holiday);
+        }
+        return holidays;
+      }
+      catch(Exception exception)
+      {
+        MDTrace.WriteLine(LogLevel.DEBUG,exception);
+        return null;
+      }
+      finally
+      {
+        if(null!=sqlCommand) sqlCommand.Dispose();
+        if(null!=sqlDataReader) sqlDataReader.Close();
+        if(null!=sqlConnection) sqlConnection.Close();
+      }
+    }
+  }
+}