Get rid of the redundand ITupleTransform interface

Author: AlexUstinov

Orm/Xtensive.Orm/Tuples/Transform/ConcatTransform.cs

@@ -14,7 +14,7 @@ namespace Xtensive.Tuples.Transform
   /// This class is used for concatenation of two <see cref="Tuple"/>s.
   /// </summary>
   [Serializable]
-  public sealed class ConcatTransform : ITupleTransform
+  public sealed class ConcatTransform
   {
     private readonly (TupleDescriptor first, TupleDescriptor second) sources;
 
@@ -65,9 +65,9 @@ public override string ToString()
     /// <summary>
     /// Initializes a new instance of this type.
     /// </summary>
-    /// <param name="isReadOnly"><see cref="ITupleTransform.IsReadOnly"/> property value.</param>
-    /// <param name="first">First tuple descriptor to combine.</param>
-    /// <param name="second">Second tuple descriptor to combine.</param>
+    /// <param name="isReadOnly">Indicates whethere the transformed <see cref="Tuple"/> is read only.</param>
+    /// <param name="first">The <see cref="TupleDescriptor"/> of the first source <see cref="Tuple"/>.</param>
+    /// <param name="second">The <see cref="TupleDescriptor"/> of the second source <see cref="Tuple"/>.</param>
     public ConcatTransform(bool isReadOnly, TupleDescriptor first, TupleDescriptor second)
     {
       var (firstCount, secondCount) = (first.Count, second.Count);

Orm/Xtensive.Orm/Tuples/Transform/ITupleTransform.cs

@@ -18,7 +18,7 @@ namespace Xtensive.Tuples.Transform
   /// Maps fields of a destination tuple to the specified fields of of the source tuple.
   /// </summary>
   [Serializable]
-  public class MapTransform : ITupleTransform
+  public class MapTransform
   {
     private IReadOnlyList<int> map;
 
@@ -79,8 +79,8 @@ public override string ToString()
     /// <summary>
     /// Initializes a new instance of this type.
     /// </summary>
-    /// <param name="isReadOnly"><see cref="ITupleTransform.IsReadOnly"/> property value.</param>
-    /// <param name="descriptor">Initial <see cref="ITupleTransform.Descriptor"/> property value.</param>
+    /// <param name="isReadOnly">Indicates whethere the transformed <see cref="Tuple"/> is read only.</param>
+    /// <param name="descriptor">The <see cref="TupleDescriptor"/> of the target <see cref="Tuple"/>.</param>
     /// <param name="map"><see cref="Map"/> property value.</param>
     public MapTransform(bool isReadOnly, TupleDescriptor descriptor, IReadOnlyList<int> map)
     {

Orm/Xtensive.Orm/Tuples/Transform/MapTransform.cs

@@ -14,7 +14,7 @@ namespace Xtensive.Tuples.Transform
   /// <summary>
   /// Extracts specified <see cref="Segment"/> from the <see cref="Tuple"/>.
   /// </summary>
-  public sealed class SegmentTransform : ITupleTransform
+  public sealed class SegmentTransform// : ITupleTransform
   {
     private readonly Segment<int> segment;
 
@@ -72,8 +72,8 @@ public override string ToString()
     /// <summary>
     /// Initializes a new instance of this type.
     /// </summary>
-    /// <param name="isReadOnly"><see cref="ITupleTransform.IsReadOnly"/> property value.</param>
-    /// <param name="sourceDescriptor">Source tuple descriptor.</param>
+    /// <param name="isReadOnly">Indicates whethere the transformed <see cref="Tuple"/> is read only.</param>
+    /// <param name="sourceDescriptor">The <see cref="TupleDescriptor"/> of the source <see cref="Tuple"/>.</param>
     /// <param name="segment">The segment to extract.</param>
     public SegmentTransform(bool isReadOnly, TupleDescriptor sourceDescriptor, in Segment<int> segment)
     {