/[AnywhereTS-MSSQL]/trunk/AnywhereTS.DBSupport/DBConnector.cs
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Diff of /trunk/AnywhereTS.DBSupport/DBConnector.cs

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--- trunk/AnywhereTS.DBSupport/DBConnector.cs	2012/07/14 09:40:33	121
+++ trunk/AnywhereTS.DBSupport/DBConnector.cs	2012/07/15 13:27:58	154
@@ -5,6 +5,8 @@
 using System.Data.Common;
 using System.Data;
 using System.Text.RegularExpressions;
+using System.IO;
+
 
 namespace AnywhereTS.DBSupport
 {
@@ -14,16 +16,20 @@
         where DBConnection : DbConnection, new()
         where DBDataAdapter : DbDataAdapter, new()
     {
+        bool ConnectionIsCreated { get; }
         bool ConnectionIsOpen { get; }
         void CreateConnection(out Exception ErrorInfo);
         void OpenConnection(out Exception ErrorInfo);
+
+        void GetConnectionClone(out DBConnection connection, out Exception ErrorInfo);
+
         void CloseConnection(out Exception ErrorInfo);
 
         DbDataReader ExecuteQuery(string command, List<DBParameter> Params, out Exception ErrorInfo);
         void ExecuteNonQuery(string command, List<DBParameter> Params, out Exception ErrorInfo);
         List<string> ExecuteColumnNamesReader(string command, List<DBParameter> Params, out Exception ErrorInfo);
 
-        DBCommand CreateCommandInstance(string command, List<DBParameter> Params, out Exception ErrorInfo);
+        //DBCommand CreateCommandInstance(string command, List<DBParameter> Params, out Exception ErrorInfo);
         bool RunScript(string strFile, out Exception ErrorInfo);
     }
     public abstract class DBConnector<DBParameter, DBCommand, DBConnection, DBDataAdapter> :
@@ -45,9 +51,9 @@
             }
         }
 
-        public static string GetConnectionString()
+        public static string GetConnectionString(string server, string instance, string database)
         {
-            return string.Format(@"Data Source={0}\{1};Database={2};Integrated Security=SSPI", DBServerAddress, DBServerInstance, DBDatabase);
+            return string.Format(@"Data Source={0}\{1};Database={2};Integrated Security=SSPI", server, instance, database);
         }
         protected DBConnection connection;
         #region DBServerAddress, DBServerInstance, DBDatabase
@@ -59,58 +65,79 @@
         private string SafeSqlLiteral(string inputSQL) { return inputSQL.Replace("'", "''"); }
         #endregion
         #region IDBConnector members
+        #region  public virtual bool ConnectionIsCreated
+        public virtual bool ConnectionIsCreated { get; protected set; }
+        #endregion
         #region  public virtual bool ConnectionIsOpen
         public virtual bool ConnectionIsOpen { get; protected set; }
         #endregion
         #region public virtual DBCommand CreateCommandInstance(string command, List<DBParameter> Params, out Exception ErrorInfo)
-        public virtual DBCommand CreateCommandInstance(string command, List<DBParameter> Params, out Exception ErrorInfo)
+        //public virtual DBCommand CreateCommandInstance(string command, List<DBParameter> Params, out Exception ErrorInfo)
+        //{
+        //    ErrorInfo = null;
+        //    try
+        //    {
+        //        command = this.SafeSqlLiteral(command);
+        //        DBCommand sqlComm = new DBCommand();
+        //        sqlComm.CommandText = command;
+        //        sqlComm.Connection = connection;
+        //        foreach (DBParameter p in Params) { sqlComm.Parameters.Add(p); }
+        //        return sqlComm;
+        //    }
+        //    catch (SqlException ex)
+        //    {
+        //        SqlException e = (ex.GetBaseException() as SqlException);
+        //        using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", e.Number.ToString(), e.Message, System.Environment.NewLine, e.ToString())))
+        //        {
+        //            Logging.DatabaseLog.Error(string.Format("Failed to create command instance using command: {0}", command));
+        //        }
+        //        ErrorInfo = ex; throw ErrorInfo;
+        //    }
+        //    catch (Exception ex)
+        //    {
+        //        Exception e = ex.GetBaseException();
+        //        using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", e.GetType().Name, e.Message, System.Environment.NewLine, e.ToString())))
+        //        {
+        //            Logging.DatabaseLog.Error(string.Format("Failed to create command instance using command: {0}", command));
+        //        }
+        //        ErrorInfo = ex; throw ErrorInfo;
+        //    }
+        //}
+        #endregion
+        #region public virtual void GetConnectionClone(ref DBConnection connection)
+        public virtual void GetConnectionClone(out DBConnection connection, out Exception ErrorInfo)
         {
             ErrorInfo = null;
-            try
-            {
-                command = this.SafeSqlLiteral(command);
-                DBCommand sqlComm = new DBCommand();
-                sqlComm.CommandText = command;
-                sqlComm.Connection = connection;
-                foreach (DBParameter p in Params) { sqlComm.Parameters.Add(p); }
-                return sqlComm;
-            }
-            catch (SqlException ex)
-            {
-                using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", ex.Number.ToString(), ex.Message, System.Environment.NewLine, ex.ToString())))
-                {
-                    Logging.DatabaseLog.Error(string.Format("Failed to create command instance using command: {0}", command));
-                }
-                ErrorInfo = ex; throw ErrorInfo;
-            }
-            catch (Exception ex)
-            {
-                using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", ex.GetType().Name, ex.Message, System.Environment.NewLine, ex.ToString())))
-                {
-                    Logging.DatabaseLog.Error(string.Format("Failed to create command instance using command: {0}", command));
-                }
-                ErrorInfo = ex; throw ErrorInfo;
-            }
+            connection = this.connection;
         }
         #endregion
-        #region  public virtual void CreateConnection(out Exception ErrorInfo)
+        #region  public virtual DBConnection CreateConnection(out Exception ErrorInfo)
         public virtual void CreateConnection(out Exception ErrorInfo)
         {
             ErrorInfo = null;
             string connetionString = string.Empty;
             try
-            {                
-                connetionString = GetConnectionString();
-                using (log4net.NDC.Push(string.Format("connetionString={0}", connetionString)))
-                {
-                    Logging.DatabaseLog.Debug("Creating Connection");
-                    connection = new DBConnection();
-                    connection.ConnectionString = connetionString;
-                    Logging.DatabaseLog.Debug("Created Connection");
+            {
+                if (!this.ConnectionIsCreated)
+                {
+                    connetionString = GetConnectionString(DBServerAddress, DBServerInstance, DBDatabase);
+                    using (log4net.NDC.Push(string.Format("connetionString={0}", connetionString)))
+                    {
+                        Logging.DatabaseLog.Debug("Creating Connection");
+                        connection = new DBConnection();
+                        connection.ConnectionString = connetionString;
+                        Logging.DatabaseLog.Debug("Created Connection");
+                        this.ConnectionIsCreated = true;
+                    }
+                }
+                else
+                {
+                    throw new Exception("Connection has already been created.");
                 }
             }
             catch (SqlException ex)
             {
+                this.ConnectionIsCreated = false;
                 using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", ex.Number.ToString(), ex.Message, System.Environment.NewLine, ex.ToString())))
                 {
                     Logging.DatabaseLog.Error(string.Format("Failed to create connection to {0} Database", DBDatabase));
@@ -119,6 +146,7 @@
             }
             catch (Exception ex)
             {
+                this.ConnectionIsCreated = false;
                 using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", ex.GetType().Name, ex.Message, System.Environment.NewLine, ex.ToString())))
                 {
                     Logging.DatabaseLog.Error(string.Format("Failed to create connection to {0} Database", DBDatabase));
@@ -134,19 +162,27 @@
             string connetionString = string.Empty;
             try
             {
-                //this.CloseConnection(out ErrorInfo);
-                connetionString = GetConnectionString();
+                if (this.ConnectionIsCreated && this.ConnectionIsOpen)
+                    this.CloseConnection(out ErrorInfo);
+                if (!this.ConnectionIsCreated)
+                    this.CreateConnection(out ErrorInfo);
+                connetionString = GetConnectionString(DBServerAddress, DBServerInstance, DBDatabase);
                 using (log4net.NDC.Push(string.Format("connectionString={0}", connetionString)))
                 {
                     Logging.DatabaseLog.Debug("Opening Connection");
-                    connection.Open();
-                    this.ConnectionIsOpen = true;
+                    connection.Open();  
+                    this.ConnectionIsOpen = true; 
                     Logging.DatabaseLog.Debug("Opened Connection");
                 }
             }
             //catch (SqlException ex) { Console.WriteLine(ex.ToString()); ErrorInfo = ex;  throw ErrorInfo;}
             catch (SqlException ex)
             {
+                this.ConnectionIsOpen = false;
+                if (ex.Message.ToLower().Contains(string.Format("Cannot open database").ToLower()))
+                {
+                    ErrorInfo = null;
+                }
                 using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", ex.Number.ToString(), ex.Message, System.Environment.NewLine, ex.ToString())))
                 {
                     Logging.DatabaseLog.Error(string.Format("Failed to open connection to {0} Database", DBDatabase));
@@ -155,6 +191,11 @@
             }
             catch (Exception ex)
             {
+                this.ConnectionIsOpen = false;
+                if (ex.Message.ToLower().Contains(string.Format("Cannot open database").ToLower()))
+                {
+                    ErrorInfo = null;
+                }
                 using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", ex.GetType().Name, ex.Message, System.Environment.NewLine, ex.ToString())))
                 {
                     Logging.DatabaseLog.Error(string.Format("Failed to open connection to {0} Database", DBDatabase));
@@ -170,7 +211,12 @@
             try
             {
                 if (this.ConnectionIsOpen)
+                {
                     connection.Close();
+                    this.ConnectionIsOpen = false;
+                    this.ConnectionIsCreated = false;
+                    this.connection = null;
+                }
             }
             catch (SqlException ex)
             {
@@ -299,12 +345,8 @@
         }
         #endregion
         #region public string[] ParseScriptToCommands(string strScript)
-        public string[] ParseScriptToCommands(string strScript)
-        {
-            string[] commands;
-            commands = strScript.Split(new string[] { string.Format("GO{0}", System.Environment.NewLine) }, StringSplitOptions.RemoveEmptyEntries);
-            return commands;
-        }
+     
+        protected abstract bool ClientRunScript(string strFile, out Exception ErrorInfo);
         #endregion
         #region public virtual bool RunScript(string strFile, out Exception ErrorInfo)
         public bool RunScript(string strFile, out Exception ErrorInfo)
@@ -312,12 +354,12 @@
             ErrorInfo = null;
             try
             {
-                string[] strCommands;
-                strCommands = ParseScriptToCommands(strFile);
                 if (this.ConnectionIsOpen)
                 {
-                    if (!ClientRunScript(strCommands, out ErrorInfo))
+                    if (!ClientRunScript(strFile, out ErrorInfo))
                     {
+                        if(ErrorInfo != null)
+                            throw ErrorInfo;
                         return false;
                     }
                 }
@@ -329,23 +371,24 @@
             }
             catch (SqlException ex)
             {
-                using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", ex.Number.ToString(), ex.Message, System.Environment.NewLine, ex.ToString())))
+                SqlException e = (ex.GetBaseException() as SqlException);
+                using (log4net.NDC.Push(string.Format("SqlException: ID={0} MESSAGE={1}{2}Diagnostics:{2}{3}", e.Number.ToString(), e.Message, System.Environment.NewLine, e.ToString())))
                 {
                     Logging.DatabaseLog.Error(string.Format("Failed to run script: {0}{1}", System.Environment.NewLine, strFile));
                 }
-                ErrorInfo = ex;
+                ErrorInfo = ex; throw ErrorInfo;
             }
             catch (Exception ex)
             {
-                using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", ex.GetType().Name, ex.Message, System.Environment.NewLine, ex.ToString())))
+                Exception e = ex.GetBaseException();
+                using (log4net.NDC.Push(string.Format("{0}: MESSAGE={1}{2}Diagnostics:{2}{3}", e.GetType().Name, e.Message, System.Environment.NewLine, e.ToString())))
                 {
                     Logging.DatabaseLog.Error(string.Format("Failed to run script: {0}{1}", System.Environment.NewLine, strFile));
                 }
-                ErrorInfo = ex;
+                ErrorInfo = ex; throw ErrorInfo;
             }
             return false;
         }
-        public abstract bool ClientRunScript(string[] strCommands, out Exception ErrorInfo);
         #endregion
         #endregion
 
@@ -355,7 +398,8 @@
             try
             {
                 Exception ErrorInfo;
-                CloseConnection(out ErrorInfo);
+                if (this.ConnectionIsOpen)
+                    CloseConnection(out ErrorInfo);
             }
             catch
             {

 

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