Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Common / QueryCache / QueryCacheKey.cs / 1305376 / QueryCacheKey.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //----------------------------------------------------------------------------- namespace System.Data.Common.QueryCache { using System; using System.Collections.Generic; using System.Text; ////// represents an abstract cache key /// internal abstract class QueryCacheKey { #region Constants protected const int EstimatedParameterStringSize = 20; #endregion #region Fields ////// entry hit counter /// private uint _hitCount; ////// aging index /// private int _agingIndex; ////// default string comparison kind - Ordinal /// protected static StringComparison _stringComparison = StringComparison.Ordinal; #endregion #region Constructor protected QueryCacheKey() { _hitCount = 1; } #endregion #region Abstract Methods ////// Determines whether two instances of QueryCacheContext are equal. /// Equality is value based. /// /// ///public abstract override bool Equals( object obj ); /// /// Returns QueryCacheContext instance HashCode /// ///public abstract override int GetHashCode(); #endregion #region Internal API /// /// Cache entry hit count /// internal uint HitCount { get { return _hitCount; } set { _hitCount = value; } } ////// Gets/Sets Aging index for cache entry /// internal int AgingIndex { get { return _agingIndex; } set { _agingIndex = value; } } ////// Updates hit count /// internal void UpdateHit() { if (uint.MaxValue != _hitCount) { unchecked { _hitCount++; } } } ////// default string comparer /// /// /// ///protected virtual bool Equals( string s, string t ) { return String.Equals(s, t, _stringComparison); } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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