Draft Driver for v4.0

Author: alex-kulakov

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

@@ -68,15 +68,12 @@ private static SqlDriver CreateDriverInstance(
         DefaultSchemaName = defaultSchema.Schema,
       };
 
-      if (coreServerInfo.ServerVersion < new Version(2, 5)) {
-        throw new NotSupportedException(Strings.ExFirebirdBelow25IsNotSupported);
-      }
-
-      if (coreServerInfo.ServerVersion.Major == 2 && coreServerInfo.ServerVersion.Minor == 5) {
-        return new v2_5.Driver(coreServerInfo);
-      }
-
-      return null;
+      return coreServerInfo.ServerVersion switch {
+        ({ Major: 2 } and { Minor: < 5 }) or { Major: < 2 } => throw new NotSupportedException(Strings.ExFirebirdBelow25IsNotSupported),
+        { Major: 2 } and { Minor: 5 } => new v2_5.Driver(coreServerInfo),
+        { Major: 4 }                  => new v4_0.Driver(coreServerInfo),
+        _ => throw new NotSupportedException()
+      };
     }
 
     /// <inheritdoc/>

Orm/Xtensive.Orm.Firebird/Sql.Drivers.Firebird/v4_0/Compiler.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Xtensive.Sql.Drivers.Firebird.v4_0
+{
+  internal class Compiler : v2_5.Compiler
+  {
+    protected internal Compiler(SqlDriver driver)
+      : base(driver)
+    {
+    }
+  }
+}

Orm/Xtensive.Orm.Firebird/Sql.Drivers.Firebird/v4_0/Driver.cs

@@ -0,0 +1,47 @@
+// Copyright (C) 2003-2010 Xtensive LLC.
+// All rights reserved.
+// For conditions of distribution and use, see license.
+// Created by: Csaba Beer
+// Created:    2011.01.10
+
+using System;
+using Xtensive.Sql.Info;
+using Xtensive.Sql.Compiler;
+
+namespace Xtensive.Sql.Drivers.Firebird.v4_0
+{
+  internal class Driver : v2_5.Driver
+  {
+    protected override Sql.TypeMapper CreateTypeMapper()
+    {
+      return new TypeMapper(this);
+    }
+
+    protected override SqlCompiler CreateCompiler()
+    {
+      return new Compiler(this);
+    }
+
+    protected override SqlTranslator CreateTranslator()
+    {
+      return new Translator(this);
+    }
+
+    protected override Model.Extractor CreateExtractor()
+    {
+      return new Extractor(this);
+    }
+
+    protected override Info.ServerInfoProvider CreateServerInfoProvider()
+    {
+      return new ServerInfoProvider(this);
+    }
+
+    // Constructors
+
+    public Driver(CoreServerInfo coreServerInfo)
+      : base(coreServerInfo)
+    {
+    }
+  }
+}