mcs/class/referencesource/System.Data.Entity/System/Data/Common/CommandTrees/DbModificationClause.cs

   1 //---------------------------------------------------------------------
   2 // <copyright file="DbModificationClause.cs" company="Microsoft">
   3 //      Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 //
   6 // @owner  Microsoft
   7 // @backupOwner Microsoft
   8 //---------------------------------------------------------------------
   9
  10 using System;
  11 using System.Collections.Generic;
  12
  13 using System.Data.Metadata.Edm;
  14 using System.Data.Common.CommandTrees.Internal;
  15 using System.Data.Common.Utils;
  16 using System.Diagnostics;
  17
  18 namespace System.Data.Common.CommandTrees
  19 {
  20     /// <summary>
  21     /// Specifies a single clause in an insert or update modification operation, see
  22     /// <see cref="DbInsertCommandTree.SetClauses"/> and <see cref="DbUpdateCommandTree.SetClauses"/>
  23     /// </summary>
  24     /// <remarks>
  25     /// An abstract base class allows the possibility of patterns other than
  26     /// Property = Value in future versions, e.g.,
  27     /// <code>
  28     /// update Foo
  29     /// set ComplexTypeColumn.Bar()
  30     /// where Id = 2
  31     /// </code>
  32     /// </remarks>
  33     [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "Db")]
  34     public abstract class DbModificationClause
  35     {
  36         internal DbModificationClause()
  37         {
  38         }
  39
  40         // Effects: describes the contents of this clause using the given dumper
  41         internal abstract void DumpStructure(ExpressionDumper dumper);
  42
  43         // Effects: produces a tree node describing this clause, recursively producing nodes
  44         // for child expressions using the given expression visitor
  45         internal abstract TreeNode Print(DbExpressionVisitor<TreeNode> visitor);
  46     }
  47 }