Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data.Entity/System/Data/Common/FieldMetadata.cs

@@ -0,0 +1,58 @@
+//------------------------------------------------------------------------------
+// <copyright file="FieldMetadata.cs" company="Microsoft">
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+// <owner current="true" primary="true">[....]</owner>
+// <owner current="true" primary="false">[....]</owner>
+//------------------------------------------------------------------------------
+
+namespace System.Data.Common {
+
+    using System.Data;
+    using System.Data.Metadata.Edm;
+    
+    /// <summary>
+    /// FieldMetadata class providing the correlation between the column ordinals and MemberMetadata.
+    /// </summary>
+    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1815:OverrideEqualsAndOperatorEqualsOnValueTypes")]
+    public struct FieldMetadata {
+
+        private readonly EdmMember _fieldType;
+        private readonly int _ordinal;
+
+        /// <summary>
+        /// Used to construct a field metadata object relating a column ordinal and an ImemberMetadata.
+        /// </summary>
+        /// <param name="ordinal">Column oridnal</param>
+        /// <param name="fieldType">Metadata member</param>
+        public FieldMetadata(int ordinal, EdmMember fieldType) {
+            if (ordinal < 0) {
+                throw EntityUtil.ArgumentOutOfRange("ordinal");
+            }
+            if (null == fieldType) {
+                throw EntityUtil.ArgumentNull("fieldType");
+            }
+
+            _fieldType = fieldType;
+            _ordinal = ordinal;
+        }
+
+        /// <summary>
+        /// Metadata member.
+        /// </summary>
+        public EdmMember FieldType {
+            get {
+                return _fieldType;
+            }
+        }
+
+        /// <summary>
+        /// Column ordinal.
+        /// </summary>
+        public int Ordinal {
+            get {
+                return _ordinal;
+            }
+        }
+    }
+}