Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data.Entity/System/Data/IEntityStateManager.cs

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+//---------------------------------------------------------------------
+// <copyright file="IEntityStateManager.cs" company="Microsoft">
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//
+// @owner       dsimmons
+// @backupOwner amirhmy
+//---------------------------------------------------------------------
+
+using System;
+using System.Data;
+using System.Data.Objects;
+using System.Data.Metadata.Edm;
+using System.Collections.Generic;
+
+namespace System.Data
+{
+    /// <summary>
+    /// Interface allowing an IEntityAdapter to analyze state/change tracking information maintained
+    /// by a state manager in order to perform updates on a backing store (and push back the results
+    /// of those updates).
+    /// </summary>
+    internal interface IEntityStateManager {
+        IEnumerable<IEntityStateEntry> GetEntityStateEntries(EntityState state);
+        IEnumerable<IEntityStateEntry> FindRelationshipsByKey(EntityKey key);
+        IEntityStateEntry GetEntityStateEntry(EntityKey key);
+        bool TryGetEntityStateEntry(EntityKey key, out IEntityStateEntry stateEntry);
+        bool TryGetReferenceKey(EntityKey dependentKey, AssociationEndMember principalRole, out EntityKey principalKey);
+    }
+}