Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data.Entity/System/Data/Common/QueryCache/QueryCacheEntry.cs

@@ -0,0 +1,66 @@
+//------------------------------------------------------------------------------
+// <copyright file="QueryCacheEntry.cs" company="Microsoft">
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//
+// @owner  [....]
+// @backupOwner [....]
+//------------------------------------------------------------------------------
+
+namespace System.Data.Common.QueryCache
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Text;
+    using System.Data.Common;
+    using System.Diagnostics;
+
+    /// <summary> 
+    /// Represents the abstract base class for all cache entry values in the query cache 
+    /// </summary> 
+    internal class QueryCacheEntry
+    {
+        #region Fields
+        /// <summary>
+        /// querycachekey for this entry
+        /// </summary>
+        readonly private QueryCacheKey _queryCacheKey;
+
+        /// <summary> 
+        /// strong reference to the target object 
+        /// </summary> 
+        readonly protected object _target;
+        #endregion
+
+        #region Constructors
+        /// <summary> 
+        /// cache entry constructor 
+        /// </summary> 
+        /// <param name="queryCacheKey"></param> 
+        /// <param name="target"></param> 
+        internal QueryCacheEntry(QueryCacheKey queryCacheKey, object target)
+        {
+            _queryCacheKey = queryCacheKey;
+            _target = target;
+        }
+        #endregion
+
+        #region Methods and Properties
+        /// <summary> 
+        /// The payload of this cache entry.
+        /// </summary> 
+        internal virtual object GetTarget()
+        {
+            return _target;
+        }
+
+        /// <summary>
+        /// Returns the query cache key
+        /// </summary>
+        internal QueryCacheKey QueryCacheKey
+        {
+            get { return _queryCacheKey; }
+        }
+        #endregion
+    }
+}