mcs/class/referencesource/System.Data/Microsoft/SqlServer/Server/SqlTriggerContext.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="SqlTriggerContext.cs" company="Microsoft">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 // <owner current="true" primary="true">Microsoft</owner>
   6 // <owner current="true" primary="false">Microsoft</owner>
   7 // <owner current="true" primary="false">daltodov</owner>
   8 //------------------------------------------------------------------------------
   9
  10 namespace Microsoft.SqlServer.Server {
  11
  12     using System.Data.Common;
  13     using System.Data.SqlClient;
  14     using System.Data.SqlTypes;
  15     using System.Diagnostics;
  16
  17     public sealed class SqlTriggerContext {
  18
  19         TriggerAction   _triggerAction;
  20         bool[]          _columnsUpdated;
  21         SqlXml          _eventInstanceData;
  22
  23         internal SqlTriggerContext(TriggerAction triggerAction, bool[] columnsUpdated, SqlXml eventInstanceData) {
  24             _triggerAction     = triggerAction;
  25             _columnsUpdated    = columnsUpdated;
  26             _eventInstanceData = eventInstanceData;
  27         }
  28
  29         public int ColumnCount {
  30             get {
  31                 int result = 0;
  32
  33                 if (null != _columnsUpdated) {
  34                     result = _columnsUpdated.Length;
  35                 }
  36                 return result;
  37             }
  38         }
  39
  40         public SqlXml EventData {
  41             get {
  42                 return _eventInstanceData;
  43             }
  44         }
  45
  46         public TriggerAction TriggerAction {
  47             get {
  48                 return _triggerAction;
  49             }
  50         }
  51
  52         public bool IsUpdatedColumn(int columnOrdinal) {
  53             if (null != _columnsUpdated) {
  54                 return _columnsUpdated[columnOrdinal];   // will throw IndexOutOfRangeException if it's out of range...
  55             }
  56             throw ADP.IndexOutOfRange(columnOrdinal);    // if there aren't any columns, that means IndexOutOfRange too...
  57         }
  58     }
  59 }