mcs/class/referencesource/System.Data/System/Data/SqlClient/SqlBulkCopyColumnMapping.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="SqlBulkCopyColumnMapping.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 //------------------------------------------------------------------------------
   8
   9 // Todo: rename the file
  10 // Caution! ndp\fx\src\data\netmodule\sources needs to follow this change
  11
  12 namespace System.Data.SqlClient
  13 {
  14     using System;
  15     using System.Data;
  16     using System.Data.Common;
  17     using System.Data.SqlTypes;
  18     using System.ComponentModel;
  19
  20     using System.Collections;
  21     using System.Diagnostics;
  22
  23     // -------------------------------------------------------------------------------------------------
  24     // this class helps allows the user to create association between source- and targetcolumns
  25     //
  26     //
  27
  28     public sealed class SqlBulkCopyColumnMapping {
  29         internal string         _destinationColumnName;
  30         internal int            _destinationColumnOrdinal;
  31         internal string         _sourceColumnName;
  32         internal int            _sourceColumnOrdinal;
  33
  34         // devnote: we don't want the user to detect the columnordinal after WriteToServer call.
  35         // _sourceColumnOrdinal(s) will be copied to _internalSourceColumnOrdinal when WriteToServer executes.
  36         internal int            _internalDestinationColumnOrdinal;
  37         internal int            _internalSourceColumnOrdinal;   // -1 indicates an undetermined value
  38
  39         public string DestinationColumn {
  40             get {
  41                 if (_destinationColumnName != null) {
  42                     return _destinationColumnName;
  43                 }
  44                 return string.Empty;
  45             }
  46             set {
  47                 _destinationColumnOrdinal = _internalDestinationColumnOrdinal = -1;
  48                 _destinationColumnName = value;
  49             }
  50         }
  51
  52         public int DestinationOrdinal {
  53             get {
  54                     return _destinationColumnOrdinal;
  55             }
  56             set {
  57                 if (value >= 0) {
  58                     _destinationColumnName = null;
  59                     _destinationColumnOrdinal = _internalDestinationColumnOrdinal = value;
  60                 }
  61                 else {
  62                     throw ADP.IndexOutOfRange(value);
  63                 }
  64             }
  65         }
  66
  67         public string SourceColumn {
  68             get {
  69                 if (_sourceColumnName != null) {
  70                     return _sourceColumnName;
  71                 }
  72                 return string.Empty;
  73             }
  74             set {
  75                 _sourceColumnOrdinal = _internalSourceColumnOrdinal = -1;
  76                 _sourceColumnName = value;
  77             }
  78         }
  79
  80         public int SourceOrdinal {
  81             get {
  82                     return _sourceColumnOrdinal;
  83             }
  84             set {
  85                 if (value >= 0) {
  86                     _sourceColumnName = null;
  87                     _sourceColumnOrdinal = _internalSourceColumnOrdinal = value;
  88                 }
  89                 else {
  90                     throw ADP.IndexOutOfRange(value);
  91                 }
  92             }
  93         }
  94
  95         public SqlBulkCopyColumnMapping () {
  96             _internalSourceColumnOrdinal = -1;
  97         }
  98
  99         public SqlBulkCopyColumnMapping (string sourceColumn, string destinationColumn) {
 100             SourceColumn = sourceColumn;
 101             DestinationColumn = destinationColumn;
 102         }
 103
 104         public SqlBulkCopyColumnMapping (int sourceColumnOrdinal, string destinationColumn) {
 105             SourceOrdinal = sourceColumnOrdinal;
 106             DestinationColumn = destinationColumn;
 107         }
 108
 109         public SqlBulkCopyColumnMapping (string sourceColumn, int destinationOrdinal) {
 110             SourceColumn = sourceColumn;
 111             DestinationOrdinal = destinationOrdinal;
 112         }
 113
 114         public SqlBulkCopyColumnMapping (int sourceColumnOrdinal, int destinationOrdinal) {
 115             SourceOrdinal = sourceColumnOrdinal;
 116             DestinationOrdinal = destinationOrdinal;
 117         }
 118     }
 119 }