Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data.Entity/System/Data/Metadata/ObjectLayer/AssemblyCacheEntry.cs

@@ -0,0 +1,40 @@
+//---------------------------------------------------------------------
+// <copyright file="AssemblyCacheEntry.cs" company="Microsoft">
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//
+// @owner       [....]
+// @backupOwner [....]
+//---------------------------------------------------------------------
+
+using System.Collections.Generic;
+using System.Reflection;
+
+namespace System.Data.Metadata.Edm
+{
+    internal abstract class AssemblyCacheEntry
+    {
+        internal abstract IList<EdmType> TypesInAssembly { get; }
+        internal abstract IList<Assembly> ClosureAssemblies { get; }
+
+        internal bool TryGetEdmType(string typeName, out EdmType edmType)
+        {
+            edmType = null;
+            foreach (EdmType loadedEdmType in this.TypesInAssembly)
+            {
+                if (loadedEdmType.Identity == typeName)
+                {
+                    edmType = loadedEdmType;
+                    break;
+                }
+            }
+            return (edmType != null);
+        }
+
+        internal bool ContainsType(string typeName)
+        {
+            EdmType edmType = null;
+            return TryGetEdmType(typeName, out edmType);
+        }
+    }
+}