fix issues of backporting

Author: alex-kulakov

Orm/Xtensive.Orm.MySql/Sql.Drivers.MySql/DriverFactory.cs

@@ -122,7 +122,8 @@ private static SqlDriver CreateDriverInstance(string connectionString, Version v
         5 when version.Minor == 1 => new v5_1.Driver(coreServerInfo),
         5 when version.Minor == 5 => new v5_5.Driver(coreServerInfo),
         5 when version.Minor == 6 => new v5_6.Driver(coreServerInfo),
-        _ => new v5_6.Driver(coreServerInfo)
+        5 when version.Minor == 7 => new v5_7.Driver(coreServerInfo),
+        _ => new v5_7.Driver(coreServerInfo)
       };
     }
 

Orm/Xtensive.Orm.MySql/Sql.Drivers.MySql/v5_7/Translator.cs

@@ -1,4 +1,4 @@
-// Copyright (C) 2022 Xtensive LLC.
+// Copyright (C) 2025 Xtensive LLC.
 // This code is distributed under MIT license terms.
 // See the License.txt file in the project root for more information.
 // Created by: Alexey Kulakov
@@ -8,29 +8,10 @@
 using Xtensive.Sql.Compiler;
 using Xtensive.Sql.Dml;
 
-namespace Xtensive.Sql.Drivers.MySql.v8_0
+namespace Xtensive.Sql.Drivers.MySql.v5_7
 {
-  internal class Translator : v5_7.Translator
+  internal class Translator : v5_6.Translator
   {
-    /// <inheritdoc/>
-    public override void Translate(IOutput output, SqlLockType lockType)
-    {
-      var forShare = lockType.Supports(SqlLockType.Shared);
-      var forUpdate = lockType.SupportsAny(SqlLockType.Update | SqlLockType.Exclusive);
-
-      if (!forShare && !forUpdate) {
-        throw new NotSupportedException($"Lock '{lockType.ToString(true)}' is not supported.");
-      }
-
-      _ = output
-        .Append(forShare ? "FOR SHARE" : "FOR UPDATE")
-        .Append(lockType.Supports(SqlLockType.SkipLocked)
-          ? " SKIP LOCKED"
-          : lockType.Supports(SqlLockType.ThrowIfLocked)
-            ? " NOWAIT"
-            : string.Empty);
-    }
-
     // Constructors
 
     public Translator(SqlDriver driver)

Orm/Xtensive.Orm.MySql/Sql.Drivers.MySql/v5_7/TypeMapper.cs

@@ -1,12 +1,12 @@
-// Copyright (C) 2003-2010 Xtensive LLC.
-// All rights reserved.
-// For conditions of distribution and use, see license.
-// Created by: Alena Mikshina
-// Created:    2013.12.30
+// Copyright (C) 2022 Xtensive LLC.
+// This code is distributed under MIT license terms.
+// See the License.txt file in the project root for more information.
+// Created by: Alexey Kulakov
+// Created:    2022.02.03
 
-namespace Xtensive.Sql.Drivers.MySql.v5_6
+namespace Xtensive.Sql.Drivers.MySql.v5_7
 {
-  internal class TypeMapper : v5_5.TypeMapper
+  internal class TypeMapper : v5_6.TypeMapper
   {
     // Constructors