Rename ColumnTypeMapping to ColumnTypeMetadata.

Author: bgrainger

src/MySqlConnector/MySqlClient/MySqlDbColumn.cs

@@ -42,9 +42,9 @@ public sealed class MySqlDbColumn : System.Data.Common.DbColumn
 	{
 		internal MySqlDbColumn(int ordinal, ColumnDefinitionPayload column, MySqlDbType mySqlDbType)
 		{
-			var columnTypeMapping = TypeMapper.Mapper.GetColumnMapping(mySqlDbType);
+			var columnTypeMetadata = TypeMapper.Mapper.GetColumnTypeMetadata(mySqlDbType);
 
-			var type = columnTypeMapping.DbTypeMapping.ClrType;
+			var type = columnTypeMetadata.DbTypeMapping.ClrType;
 			var columnSize = type == typeof(string) || type == typeof(Guid) ?
 				column.ColumnLength / SerializationUtility.GetBytesPerCharacter(column.CharacterSet) :
 				column.ColumnLength;
@@ -58,7 +58,7 @@ internal MySqlDbColumn(int ordinal, ColumnDefinitionPayload column, MySqlDbType
 			ColumnOrdinal = ordinal;
 			ColumnSize = columnSize > int.MaxValue ? int.MaxValue : unchecked((int) columnSize);
 			DataType = type;
-			DataTypeName = columnTypeMapping.SimpleDataTypeName;
+			DataTypeName = columnTypeMetadata.SimpleDataTypeName;
 			if (mySqlDbType == MySqlDbType.String)
 				DataTypeName += string.Format(CultureInfo.InvariantCulture, "({0})", columnSize);
 			IsAliased = column.PhysicalName != column.Name;

src/MySqlConnector/MySqlClient/Results/ResultSet.cs

@@ -278,15 +278,15 @@ public string GetDataTypeName(int ordinal)
 			var mySqlDbType = ColumnTypes[ordinal];
 			if (mySqlDbType == MySqlDbType.String)
 				return string.Format(CultureInfo.InvariantCulture, "CHAR({0})", ColumnDefinitions[ordinal].ColumnLength / SerializationUtility.GetBytesPerCharacter(ColumnDefinitions[ordinal].CharacterSet));
-			return TypeMapper.Mapper.GetColumnMapping(mySqlDbType).SimpleDataTypeName;
+			return TypeMapper.Mapper.GetColumnTypeMetadata(mySqlDbType).SimpleDataTypeName;
 		}
 
 		public Type GetFieldType(int ordinal)
 		{
 			if (ordinal < 0 || ordinal > ColumnDefinitions.Length)
 				throw new ArgumentOutOfRangeException(nameof(ordinal), "value must be between 0 and {0}.".FormatInvariant(ColumnDefinitions.Length));
 
-			return TypeMapper.Mapper.GetColumnMapping(ColumnTypes[ordinal]).DbTypeMapping.ClrType;
+			return TypeMapper.Mapper.GetColumnTypeMetadata(ColumnTypes[ordinal]).DbTypeMapping.ClrType;
 		}
 
 		public int FieldCount => ColumnDefinitions?.Length ?? 0;

src/MySqlConnector/MySqlClient/Types/ColumnTypeMapping.cs renamed to src/MySqlConnector/MySqlClient/Types/ColumnTypeMetadata.cs

@@ -1,10 +1,10 @@
 namespace MySql.Data.MySqlClient.Types
 {
-	internal sealed class ColumnTypeMapping
+	internal sealed class ColumnTypeMetadata
 	{
 		public static string CreateLookupKey(string columnTypeName, bool isUnsigned, int length) => $"{columnTypeName}|{(isUnsigned ? "u" : "s")}|{length}";
 
-		public ColumnTypeMapping(string dataTypeName, DbTypeMapping dbTypeMapping, MySqlDbType mySqlDbType, bool unsigned = false, bool binary = false, int length = 0, string simpleDataTypeName = null)
+		public ColumnTypeMetadata(string dataTypeName, DbTypeMapping dbTypeMapping, MySqlDbType mySqlDbType, bool unsigned = false, bool binary = false, int length = 0, string simpleDataTypeName = null)
 		{
 			DataTypeName = dataTypeName;
 			SimpleDataTypeName = simpleDataTypeName ?? dataTypeName;