Handle resolving concrete types from IHasDbConnection/DbCommand in .NET 4.5 async builds

Author: mythz

src/ServiceStack.OrmLite.MySql/MySqlDialectProvider.cs

@@ -228,11 +228,19 @@ public string GetColumnDefinition(FieldDefinition fieldDef)
 
         protected MySqlConnection Unwrap(IDbConnection db)
         {
+            var hasDb = db as IHasDbConnection;
+            if (hasDb != null)
+                return (MySqlConnection)hasDb.DbConnection;
+
             return (MySqlConnection)db.ToDbConnection();
         }
 
         protected MySqlCommand Unwrap(IDbCommand cmd)
         {
+            var hasCmd = cmd as IHasDbCommand;
+            if (hasCmd != null)
+                return (MySqlCommand)hasCmd.DbCommand;
+
             return (MySqlCommand)cmd.ToDbCommand();
         }
 

src/ServiceStack.OrmLite.SqlServer/SqlServerOrmLiteDialectProvider.cs

@@ -465,11 +465,19 @@ public override string GetLoadChildrenSubSelect<From>(ModelDefinition modelDef,
 
         protected SqlConnection Unwrap(IDbConnection db)
         {
+            var hasDb = db as IHasDbConnection;
+            if (hasDb != null)
+                return (SqlConnection)hasDb.DbConnection;
+ 
             return (SqlConnection)db.ToDbConnection();
         }
 
         protected SqlCommand Unwrap(IDbCommand cmd)
         {
+            var hasCmd = cmd as IHasDbCommand;
+            if (hasCmd != null)
+                return (SqlCommand)hasCmd.DbCommand;
+
             return (SqlCommand) cmd.ToDbCommand();
         }