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

   1 //------------------------------------------------------------------------------
   2 // <copyright file="ShaperFactoryQueryCacheKey.cs" company="Microsoft">
   3 //      Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 //
   6 // @owner  [....]
   7 // @backupOwner [....]
   8 //------------------------------------------------------------------------------
   9
  10 using System.Diagnostics;
  11 using System.Data.Objects;
  12 namespace System.Data.Common.QueryCache
  13 {
  14     internal class ShaperFactoryQueryCacheKey<T> : QueryCacheKey
  15     {
  16         private readonly string _columnMapKey;
  17         private readonly MergeOption _mergeOption;
  18         private readonly bool _isValueLayer;
  19
  20         internal ShaperFactoryQueryCacheKey(string columnMapKey, MergeOption mergeOption, bool isValueLayer)
  21         {
  22             Debug.Assert(null != columnMapKey, "null columnMapKey");
  23             _columnMapKey = columnMapKey;
  24             _mergeOption = mergeOption;
  25             _isValueLayer = isValueLayer;
  26         }
  27
  28         public override bool Equals(object obj)
  29         {
  30             var other = obj as ShaperFactoryQueryCacheKey<T>;
  31             if (null == other)
  32             {
  33                 return false;
  34             }
  35             return this._columnMapKey.Equals(other._columnMapKey, _stringComparison)
  36                 && this._mergeOption == other._mergeOption
  37                 && this._isValueLayer == other._isValueLayer;
  38         }
  39
  40         public override int GetHashCode()
  41         {
  42             return _columnMapKey.GetHashCode();
  43         }
  44     }
  45 }