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Sean
2025-03-25 21:42:32 -04:00
parent c266eecfeb
commit 30c33d3cfd
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239
MarketData/MarketDataLib/DataAccess/WatchListDA.cs Executable file
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using System;
using System.Collections.Generic;
using System.Text;
using MySql.Data.MySqlClient;
using MarketData.MarketDataModel;
using MarketData.Utils;
namespace MarketData.DataAccess
{
public class WatchListDA
{
private WatchListDA()
{
}
public static bool AddToWatchList(String symbol, String watchListName = "Valuations")
{
MySqlConnection sqlConnection = null;
MySqlTransaction sqlTransaction = null;
MySqlCommand sqlCommand = null;
String strQuery = null;
try
{
if (null == symbol) return false;
symbol = symbol.ToUpper();
WatchListItem watchListItem = GetWatchListItem(watchListName);
if (null == watchListItem) return false;
if (IsInWatchList(symbol, watchListName)) return true;
sqlConnection = SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("portfolio_data"));
sqlTransaction = sqlConnection.BeginTransaction(System.Data.IsolationLevel.ReadCommitted);
StringBuilder sb = new StringBuilder();
sb.Append("insert into watchlist(watch_list_id,symbol)values(");
sb.Append(watchListItem.WatchListId).Append(",");
sb.Append(SqlUtils.AddQuotes(symbol));
sb.Append(")");
strQuery = sb.ToString();
sqlCommand = new MySqlCommand(strQuery, sqlConnection, sqlTransaction);
sqlCommand.CommandTimeout = SqlUtils.COMMAND_TIMEOUT;
sqlCommand.ExecuteNonQuery();
sqlTransaction.Commit();
return true;
}
catch (Exception exception)
{
MDTrace.WriteLine(LogLevel.DEBUG, exception);
return false;
}
finally
{
if (null != sqlCommand) sqlCommand.Dispose();
if (null != sqlTransaction) sqlTransaction.Dispose();
if (null != sqlConnection) sqlConnection.Close();
}
}
public static bool RemoveFromWatchList(String symbol, String watchListName = "Valuations")
{
MySqlConnection sqlConnection = null;
MySqlTransaction sqlTransaction = null;
MySqlCommand sqlCommand = null;
String strQuery = null;
try
{
if (null == symbol) return false;
symbol = symbol.ToUpper();
WatchListItem watchListItem = GetWatchListItem(watchListName);
if (null == watchListItem) return false;
List<String> watchListSymbols = GetWatchList(watchListName);
if (null == watchListSymbols.Find(x => x.Equals(symbol))) return true;
sqlConnection = SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("portfolio_data"));
sqlTransaction = sqlConnection.BeginTransaction(System.Data.IsolationLevel.ReadCommitted);
StringBuilder sb = new StringBuilder();
sb.Append("delete from watchlist where watch_list_id=").Append(watchListItem.WatchListId).Append(" and ").Append("symbol='").Append(symbol).Append("'");
strQuery = sb.ToString();
sqlCommand = new MySqlCommand(strQuery, sqlConnection, sqlTransaction);
sqlCommand.CommandTimeout = SqlUtils.COMMAND_TIMEOUT;
sqlCommand.ExecuteNonQuery();
sqlTransaction.Commit();
return true;
}
catch (Exception exception)
{
MDTrace.WriteLine(LogLevel.DEBUG, exception);
return false;
}
finally
{
if (null != sqlCommand) sqlCommand.Dispose();
if (null != sqlTransaction) sqlTransaction.Dispose();
if (null != sqlConnection) sqlConnection.Close();
}
}
public static bool IsInWatchList(String symbol, String watchListName = "Valuations")
{
MySqlConnection sqlConnection = null;
MySqlDataReader sqlDataReader = null;
MySqlCommand sqlCommand = null;
String strQuery = null;
try
{
StringBuilder sb = new StringBuilder();
sqlConnection = SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("portfolio_data"));
sb.Append("select count(*) from watchlist wl, watchlists wls where wl.watch_list_id=wls.watch_list_id and wls.watch_list_name=");
sb.Append("'").Append(watchListName).Append("'").Append(" ");
sb.Append("and wl.symbol=").Append("'").Append(symbol).Append("'").Append(" ");
sb.Append(" order by 1 asc");
strQuery = sb.ToString();
sqlCommand = new MySqlCommand(strQuery, sqlConnection);
sqlCommand.CommandTimeout = SqlUtils.COMMAND_TIMEOUT;
sqlDataReader = sqlCommand.ExecuteReader();
if (!sqlDataReader.Read()) return false;
int count = sqlDataReader.GetInt32(0);
return count > 0 ? true : false;
}
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 List<String> GetWatchList(String watchListName)
{
MySqlConnection sqlConnection = null;
MySqlDataReader sqlDataReader = null;
MySqlCommand sqlCommand = null;
List<String> watchList = new List<String>();
String strQuery = null;
try
{
StringBuilder sb = new StringBuilder();
sqlConnection = SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("portfolio_data"));
sb.Append("select wl.symbol from watchlist wl, watchlists wls where wl.watch_list_id=wls.watch_list_id and wls.watch_list_name=");
sb.Append("'").Append(watchListName).Append("'").Append(" order by 1 asc");
strQuery = sb.ToString();
sqlCommand = new MySqlCommand(strQuery, sqlConnection);
sqlCommand.CommandTimeout = SqlUtils.COMMAND_TIMEOUT;
sqlDataReader = sqlCommand.ExecuteReader();
while (sqlDataReader.Read())
{
String symbol = sqlDataReader.GetString(0);
watchList.Add(symbol);
}
return watchList;
}
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();
}
}
public static WatchListItem GetWatchListItem(String watchListName)
{
MySqlConnection sqlConnection = null;
MySqlDataReader sqlDataReader = null;
MySqlCommand sqlCommand = null;
WatchListItem watchListItem = null;
String strQuery = null;
try
{
StringBuilder sb = new StringBuilder();
sqlConnection = SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("portfolio_data"));
sb.Append("select watch_list_name,watch_list_id from watchlists where watch_list_name='").Append(watchListName).Append("'");
strQuery = sb.ToString();
sqlCommand = new MySqlCommand(strQuery, sqlConnection);
sqlCommand.CommandTimeout = SqlUtils.COMMAND_TIMEOUT;
sqlDataReader = sqlCommand.ExecuteReader();
if (sqlDataReader.Read())
{
watchListItem = new WatchListItem();
watchListItem.WatchListName = sqlDataReader.GetString(0);
watchListItem.WatchListId = sqlDataReader.GetInt32(1);
}
return watchListItem;
}
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();
}
}
public static List<String> GetWatchLists()
{
MySqlConnection sqlConnection = null;
MySqlDataReader sqlDataReader = null;
MySqlCommand sqlCommand = null;
List<String> watchList = new List<String>();
String strQuery = null;
try
{
StringBuilder sb = new StringBuilder();
sqlConnection = SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("portfolio_data"));
sb.Append("select watch_list_name from watchlists");
strQuery = sb.ToString();
sqlCommand = new MySqlCommand(strQuery, sqlConnection);
sqlCommand.CommandTimeout = SqlUtils.COMMAND_TIMEOUT;
sqlDataReader = sqlCommand.ExecuteReader();
while (sqlDataReader.Read())
{
String symbol = sqlDataReader.GetString(0);
watchList.Add(symbol);
}
return watchList;
}
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();
}
}
}
}