Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,119 @@
+//------------------------------------------------------------------------------
+// <copyright file="SqlBulkCopyColumnMapping.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+// <owner current="true" primary="true">[....]</owner>
+// <owner current="true" primary="false">[....]</owner>
+//------------------------------------------------------------------------------
+
+// Todo: rename the file
+// Caution! ndp\fx\src\data\netmodule\sources needs to follow this change
+
+namespace System.Data.SqlClient
+{
+    using System;
+    using System.Data;
+    using System.Data.Common;
+    using System.Data.SqlTypes;
+    using System.ComponentModel;
+
+    using System.Collections;
+    using System.Diagnostics;
+
+    // -------------------------------------------------------------------------------------------------
+    // this class helps allows the user to create association between source- and targetcolumns
+    //
+    //
+
+    public sealed class SqlBulkCopyColumnMapping {
+        internal string         _destinationColumnName;
+        internal int            _destinationColumnOrdinal;
+        internal string         _sourceColumnName;
+        internal int            _sourceColumnOrdinal;
+
+        // devnote: we don't want the user to detect the columnordinal after WriteToServer call.
+        // _sourceColumnOrdinal(s) will be copied to _internalSourceColumnOrdinal when WriteToServer executes.
+        internal int            _internalDestinationColumnOrdinal;
+        internal int            _internalSourceColumnOrdinal;   // -1 indicates an undetermined value
+
+        public string DestinationColumn {
+            get {
+                if (_destinationColumnName != null) {
+                    return _destinationColumnName;
+                }
+                return string.Empty;
+            }
+            set {
+                _destinationColumnOrdinal = _internalDestinationColumnOrdinal = -1;
+                _destinationColumnName = value;
+            }
+        }
+
+        public int DestinationOrdinal {
+            get {
+                    return _destinationColumnOrdinal;
+            }
+            set {
+                if (value >= 0) {
+                    _destinationColumnName = null;
+                    _destinationColumnOrdinal = _internalDestinationColumnOrdinal = value;
+                }
+                else {
+                    throw ADP.IndexOutOfRange(value);
+                }
+            }
+        }
+
+        public string SourceColumn {
+            get {
+                if (_sourceColumnName != null) {
+                    return _sourceColumnName;
+                }
+                return string.Empty;
+            }
+            set {
+                _sourceColumnOrdinal = _internalSourceColumnOrdinal = -1;
+                _sourceColumnName = value;
+            }
+        }
+
+        public int SourceOrdinal {
+            get {
+                    return _sourceColumnOrdinal;
+            }
+            set {
+                if (value >= 0) {
+                    _sourceColumnName = null;
+                    _sourceColumnOrdinal = _internalSourceColumnOrdinal = value;
+                }
+                else {
+                    throw ADP.IndexOutOfRange(value);
+                }
+            }
+        }
+
+        public SqlBulkCopyColumnMapping () {
+            _internalSourceColumnOrdinal = -1;
+        }
+
+        public SqlBulkCopyColumnMapping (string sourceColumn, string destinationColumn) {
+            SourceColumn = sourceColumn;
+            DestinationColumn = destinationColumn;
+        }
+
+        public SqlBulkCopyColumnMapping (int sourceColumnOrdinal, string destinationColumn) {
+            SourceOrdinal = sourceColumnOrdinal;
+            DestinationColumn = destinationColumn;
+        }
+
+        public SqlBulkCopyColumnMapping (string sourceColumn, int destinationOrdinal) {
+            SourceColumn = sourceColumn;
+            DestinationOrdinal = destinationOrdinal;
+        }
+
+        public SqlBulkCopyColumnMapping (int sourceColumnOrdinal, int destinationOrdinal) {
+            SourceOrdinal = sourceColumnOrdinal;
+            DestinationOrdinal = destinationOrdinal;
+        }
+    }
+}