Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Data.Entity/System/Data/Mapping/Mapping.cs

@@ -0,0 +1,33 @@
+//---------------------------------------------------------------------
+// <copyright file="Mapping.cs" company="Microsoft">
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//
+// @owner       [....]
+// @backupOwner [....]
+//---------------------------------------------------------------------
+
+using System.Data.Metadata.Edm;
+using System.Globalization;
+
+namespace System.Data.Mapping
+{
+    /// <summary>
+    /// Represents the base item class for all the mapping metadata
+    /// </summary>
+    internal abstract class Map : GlobalItem
+    {
+        protected Map() 
+            : base(MetadataFlags.Readonly) 
+        {
+        }
+        #region Properties
+        /// <summary>
+        /// Returns the Item that is being mapped either for ES or OE spaces.
+        /// The EDM type will be an EntityContainer type in ES mapping case.
+        /// In the OE mapping case it could be any type.
+        /// </summary>
+        internal abstract MetadataItem EdmItem { get; }
+        #endregion
+    }
+}