[Mono-list] MySQL / Firebird

[Sijmen Mulder]

Thank you for that explanation (which is very usefull), but things are not 
working correctly over here:

sijmen@sijmen sql $ mcs /r:ByteFX.Data.dll test.cs
test.cs(5) error CS0246: Cannot find type `MySqlConnection'
test.cs(1) error CS0246: The namespace `ByteFX.Data.MySqlClient' can not be 
found (missing assembly reference?)
Compilation failed: 2 error(s), 0 warnings

sijmen@sijmen sql $ mcs --version
Mono C# compiler version 0.28.0.0

--
Sijmen Mulder

>From: "Michael J. Ryan" <tracker1_lists@theroughnecks.com>
>To: Sijmen Mulder <sijmen_mulder@hotmail.com>
>CC: mono-list@lists.ximian.com
>Subject: Re: [Mono-list] MySQL / Firebird
>Date: Wed, 19 Nov 2003 13:23:53 -0700
>
>Replace ... System.Data.SqlClient.* with ByteFX.Data.MySqlClient.*
>Replace .... *.Sql* with *.MySql*
>
>there ya go...  it is an ADO.Net provider, works about 85% the same, I
>find that I have to manually do some type conversion, since 99% of my 
>queries
>are returned as a System.Data.DataTable, then from there into my own native
>objects...
>
>See attached... Rename the MyCompany.MyProject.MyData as appropriate...
>Use the docs for System.Data.SqlClient
>
>Query example:
>DataTable t = DB.Query("SELECT column1,column2 FROM MyTable;");
>//you can use foreach, or other methods of access, this is what I use.
>//  usually using an id, or feeding it to a class()
>for (int i=0; i<t.Rows.Length; i++) {
>	string column1 = DB.ToString(t.Rows[i][0]);
>	int column2 = DB.ToInt(t.Rows[i][1]);
>	Response.Write(String.Format("{0} - {1}",column1,column2);
>}
>
>Insert/Update Example:
>string SQL = "INSERT INTO Table (column1,column2) VALUES ({0},{1});"
>DB.Exec( String.Format( SQL, DB.ToData(column1), DB.ToData(column2) ) );
>
>the .ToData() is overloaded, and will wrap '' around strings, dates, and
>guid's as appropriate, I like System.Guid as a key field, generate them
>in .Net, and store them as a CHAR(36) ...
>
>I hope this is helpfull...  the connection string is stored in web.config
>
>most of what I do can be done in either .Exec(string) or .Query(string)
>Exec returns the int from the native execution, Query returns a DataTable,
>the methods are static, meaning you don't initialize it first... also,
>the connection is isolated for late-bind, early-release methodology.
>
>
>Sijmen Mulder wrote:
>>Great! It's shipped with mono!
>>
>>But now I am looking for documentation on it (not SQL itself ofcourse 
>>;-]).
>>Any idea where I can find it? I already did a few searches, without too 
>>much results...
>
>--
>Michael J. Ryan - tracker1(at)theroughnecks(dot)com - www.theroughnecks.net
>icq: 4935386  -  AIM/AOL: azTracker1  -  Y!: azTracker1  -  MSN/Win: 
>(email)
>using System;
>using System.Collections;
>using System.Data;
>using ByteFX.Data.MySqlClient;
>using MyCompany.MyProject.MyData;
>
>namespace MyCompany.MyProject.MyData {
>	public class DB {
>		private DB() {} //Not instantiable
>
>		private static void OpenDB(MySqlConnection conDB) {
>			Context.Trace.Write("AzTravelCenter.Common.Data","OpenDB");
>
>			conDB.ConnectionString = 
>System.Configuration.ConfigurationSettings.AppSettings["MySiteConn"];
>			conDB.Open();
>		} //OpenDB
>
>		private static void OpenReadDB(MySqlConnection conDB) {
>			Context.Trace.Write("AzTravelCenter.Common.Data","OpenReadDB");
>
>//can use a random read db, for clustered MySql Servers.. :D
>//			string strReadConn = "MySiteReadConn" + (new 
>Random()).Next(1).ToString();
>
>//single connection string for db reads
>			string strReadConn = "MySiteReadConn"
>
>			conDB.ConnectionString = 
>System.Configuration.ConfigurationSettings.AppSettings[strReadConn];
>			conDB.Open();
>		} //OpenReadDB
>
>		private static void CloseDB(MySqlConnection conDB) {
>			Context.Trace.Write("AzTravelCenter.Common.Data","CloseDB");
>
>			conDB.Close();
>			conDB = null;
>		} //CloseDB
>
>		public static string ToData(decimal subject) {
>			if (object.Equals(subject,null))
>				return "NULL";
>			else
>				return String.Format("{0:0.0000}",subject);
>		}
>
>		public static string ToData(int subject) {
>			if (object.Equals(subject,null))
>				return "NULL";
>			else
>				return subject.ToString();
>		}
>
>		public static string ToData(string subject) {
>			if (object.Equals(subject,null))
>				return "NULL";
>			else
>				return "'" + subject.Replace("'","''") + "'";
>		}
>
>		public static string ToData(bool subject) {
>			return (subject)?"'1'":"'0'";
>		}
>
>		public static string ToData(Guid subject) {
>			if (subject == new Guid())
>				return "NULL";
>			else
>				return "'" + subject.ToString() + "'";
>		}
>
>		public static string ToData(DateTime subject) {
>			if (object.Equals(subject,null))
>				return "NULL";
>			else
>				return string.Format("{0:yyyy-MM-dd HH:mm:ss}",subject);
>		}
>
>		public static Guid ToGuid(Object subject) {
>			if (DBNull.Value.Equals(subject))
>				return new Guid();
>			else
>				return new Guid(subject.ToString());
>		}
>
>		public static String ToString(Object subject) {
>			if (DBNull.Value.Equals(subject))
>				return "";
>			else
>				return subject.ToString();
>		}
>
>		public static int ToInt(Object subject) {
>			if (DBNull.Value.Equals(subject))
>				return 0;
>			else
>				return int.Parse(subject.ToString());
>		}
>		public static int ToInt(Object subject, int Default) {
>			if (DBNull.Value.Equals(subject))
>				return Default;
>			else
>				return int.Parse(subject.ToString());
>		}
>
>		public static decimal ToDecimal(Object subject) {
>			return ToDecimal(subject, (decimal)0);
>		}
>		public static decimal ToDecimal(Object subject, decimal Default) {
>			if (DBNull.Value.Equals(subject))
>				return Default;
>			else
>				return decimal.Parse(subject.ToString());
>		}
>
>		public static DateTime ToDateTime(Object subject) {
>			if (DBNull.Value.Equals(subject))
>				return DateTime.MinValue;
>			else
>				return DateTime.Parse(subject.ToString());
>		}
>
>		public static DateTime ToDateTime(Object subject, DateTime Default) {
>			if (DBNull.Value.Equals(subject))
>				return Default;
>			else
>				return DateTime.Parse(subject.ToString());
>		}
>
>		public static bool ToBool(Object subject) {
>			if (DBNull.Value.Equals(subject))
>				return false;
>			else
>				return (subject.ToString() == "1");
>		}
>		public static bool ToBool(Object subject, bool Default) {
>			if (DBNull.Value.Equals(subject))
>				return Default;
>			else
>				return (subject.ToString() == "1");
>		}
>		public static Object NotNull(Object subject, Object Default) {
>			if (DBNull.Value.Equals(subject))
>				return Default;
>			else
>				return subject;
>		} //NotNull
>
>		public static DataTable Query(string strSQL) {
>			Context.Trace.Write("AzTravelCenter.Common.Data",string.Format("Begin 
>DTBL_Query({0})",strSQL));
>
>			MySqlConnection conDB = new MySqlConnection();
>			DataTable dtblResult = new DataTable("entity_info");
>			MySqlDataAdapter dadEntityInfo = new MySqlDataAdapter(strSQL,conDB);
>
>			OpenReadDB(conDB); //Open Database Connection
>				dadEntityInfo.Fill(dtblResult); //Fill the datatable with the results
>			CloseDB(conDB); //Close Database Connection
>
>			Context.Trace.Write("AzTravelCenter.Common.Data",string.Format("End 
>DTBL_Query({0}) (results:{1})",strSQL,dtblResult.Rows.Count));
>			return dtblResult;
>		} // Query
>
>		public static int Exec(string strSQL) {
>			int intRet;
>			MySqlConnection conDB  = new MySqlConnection();
>			MySqlCommand cmdQuery = new MySqlCommand(strSQL, conDB);
>			OpenDB(conDB);
>				intRet = cmdQuery.ExecuteNonQuery();
>			CloseDB(conDB);
>
>			return intRet;
>		} //Exec
>
>	} //DB class
>} //MyCompany.MyProject.MyData

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