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Sean
2025-03-25 21:42:32 -04:00
parent c266eecfeb
commit 30c33d3cfd
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176
MarketData/MarketDataLib/DataAccess/EconomicIndicatorDA.cs Executable file
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using System;
using System.Text;
using System.Collections.Generic;
using System.Linq;
using MySql.Data.MySqlClient;
using MarketData.MarketDataModel;
using MarketData.Utils;
namespace MarketData.DataAccess
{
public class EconomicIndicatorDA
{
private EconomicIndicatorDA()
{
}
public static EconomicIndicators GetEconomicIndicators()
{
MySqlConnection sqlConnection=null;
MySqlCommand sqlCommand=null;
MySqlDataReader sqlDataReader=null;
EconomicIndicators economicIndicators=new EconomicIndicators();
try
{
sqlConnection = SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("market_data"));
sqlCommand=sqlConnection.CreateCommand();
StringBuilder sb=new StringBuilder();
sb.Append("select country_code,country_name,indicator_code,indicator_name,indicator_value,year,source from EconomicIndicators");
sqlCommand.CommandText=sb.ToString();
sqlDataReader=sqlCommand.ExecuteReader();
while(sqlDataReader.Read())
{
EconomicIndicator economicIndicator=new EconomicIndicator();
if(!sqlDataReader.IsDBNull(0))economicIndicator.CountryCode=sqlDataReader.GetString(0);
if(!sqlDataReader.IsDBNull(1))economicIndicator.CountryName=sqlDataReader.GetString(1);
if(!sqlDataReader.IsDBNull(2))economicIndicator.IndicatorCode=sqlDataReader.GetString(2);
if(!sqlDataReader.IsDBNull(3))economicIndicator.IndicatorName=sqlDataReader.GetString(3);
if(!sqlDataReader.IsDBNull(4))economicIndicator.IndicatorValue=sqlDataReader.GetDouble(4);
if(!sqlDataReader.IsDBNull(5))economicIndicator.Year=sqlDataReader.GetInt32(5);
if(!sqlDataReader.IsDBNull(6))economicIndicator.Source=sqlDataReader.GetString(6);
economicIndicators.Add(economicIndicator);
}
sqlDataReader.Close();
sqlDataReader.Dispose();
sqlCommand.Dispose();
sqlConnection.Close();
sqlConnection.Dispose();
return economicIndicators;
}
catch(Exception exception)
{
MDTrace.WriteLine(LogLevel.DEBUG,String.Format("Exception:{0}",exception.ToString()));
return null;
}
finally
{
if(null!=sqlDataReader)
{
sqlDataReader.Close();
sqlDataReader.Dispose();
}
if(null!=sqlCommand)
{
sqlCommand.Dispose();
}
if(null!=sqlConnection)
{
sqlConnection.Close();
sqlConnection.Dispose();
}
}
}
public static bool InsertUpdateEconomicIndicators(EconomicIndicators economicIndicators)
{
MySqlConnection sqlConnection=null;
MySqlCommand sqlCommand=null;
MySqlTransaction sqlTransaction=null;
try
{
sqlConnection = SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("market_data"));
sqlTransaction = sqlConnection.BeginTransaction(System.Data.IsolationLevel.ReadUncommitted);
sqlCommand=sqlConnection.CreateCommand();
sqlCommand.Transaction=sqlTransaction;
List<String> distinctCountryCodes=(from EconomicIndicator economicIndicator in economicIndicators select economicIndicator.CountryCode).Distinct().ToList();
for(int index=0;index<distinctCountryCodes.Count;index++)
{
String countryCode=distinctCountryCodes[index];
List<int> years=(from EconomicIndicator economicIndicator in economicIndicators select economicIndicator.Year).Distinct().ToList();
DeleteEconomicIndicator(countryCode,years,sqlCommand,sqlTransaction);
}
InsertEconomicIndicators(economicIndicators,sqlCommand,sqlTransaction);
sqlTransaction.Commit();
sqlTransaction.Dispose();
sqlCommand.Dispose();
sqlConnection.Close();
sqlConnection.Dispose();
sqlConnection=null;
sqlCommand=null;
sqlTransaction=null;
return true;
}
catch(Exception exception)
{
MDTrace.WriteLine(LogLevel.DEBUG,String.Format("Exception:{0}",exception.ToString()));
return false;
}
finally
{
if(null!=sqlConnection)
{
sqlConnection.Close();
sqlConnection.Dispose();
}
if(null!=sqlCommand)
{
sqlCommand.Dispose();
}
if(null!=sqlTransaction)
{
sqlTransaction.Dispose();
}
}
}
public static bool DeleteEconomicIndicator(String countryCode,List<int> years,MySqlCommand sqlCommand,MySqlTransaction sqlTransaction)
{
String strQuery=null;
try
{
StringBuilder sb=new StringBuilder();
sb.Append("delete from EconomicIndicators ").Append(" where ");
sb.Append("country_code=").Append("'").Append(countryCode).Append("'").Append(" and ");
sb.Append("year in ").Append(SqlUtils.CreateInClause(years));
strQuery=sb.ToString();
sqlCommand.CommandText=strQuery;
sqlCommand.ExecuteNonQuery();
return true;
}
catch(Exception exception)
{
MDTrace.WriteLine(LogLevel.DEBUG,String.Format("Exception:{0}, query was {1}",exception.ToString(),strQuery));
return false;
}
}
public static bool InsertEconomicIndicators(EconomicIndicators economicIndicators,MySqlCommand sqlCommand,MySqlTransaction sqlTransaction)
{
String strQuery=null;
try
{
StringBuilder sb=new StringBuilder();
foreach(EconomicIndicator economicIndicator in economicIndicators)
{
sb.Append("insert into EconomicIndicators(country_code,country_name,indicator_code,indicator_name,indicator_value,year,source)values(");
sb.Append(SqlUtils.ToSqlString(economicIndicator.CountryCode)).Append(",");
sb.Append(SqlUtils.ToSqlString(economicIndicator.CountryName)).Append(",");
sb.Append(SqlUtils.ToSqlString(economicIndicator.IndicatorCode)).Append(",");
sb.Append(SqlUtils.ToSqlString(economicIndicator.IndicatorName)).Append(",");
sb.Append(economicIndicator.IndicatorValue).Append(",");
sb.Append(economicIndicator.Year).Append(",");
sb.Append(SqlUtils.ToSqlString(economicIndicator.Source));
sb.Append(");");
}
strQuery=sb.ToString();
sqlCommand.CommandText=sb.ToString();
sqlCommand.ExecuteNonQuery();
return true;
}
catch(Exception exception)
{
MDTrace.WriteLine(LogLevel.DEBUG,String.Format("Exception:{0}",exception.ToString()));
return false;
}
finally
{
}
}
}
}