mcs/class/referencesource/System.Data.Entity/Util/AppSettings.cs

   1 //---------------------------------------------------------------------
   2 // <copyright file="ObjectContext.cs" company="Microsoft">
   3 //      Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 //
   6 // @owner       daobando
   7 // @backupOwner Microsoft
   8 //---------------------------------------------------------------------
   9
  10 using System.Collections.Specialized;
  11 using System.Configuration;
  12
  13 namespace System.Data.Entity.Util
  14 {
  15     internal static class AppSettings
  16     {
  17         private static volatile bool _settingsInitialized = false;
  18         private static object _appSettingsLock = new object();
  19         private static void EnsureSettingsLoaded()
  20         {
  21             if (!_settingsInitialized)
  22             {
  23                 lock (_appSettingsLock)
  24                 {
  25                     if (!_settingsInitialized)
  26                     {
  27                         NameValueCollection settings = null;
  28                         try
  29                         {
  30                             settings = ConfigurationManager.AppSettings;
  31                         }
  32                         finally
  33                         {
  34                             if (settings == null || !Boolean.TryParse(settings["EntityFramework_SimplifyLimitOperations"], out _SimplifyLimitOperations))
  35                             {
  36                                 _SimplifyLimitOperations = false;
  37                             }
  38
  39                             if (settings == null || !Boolean.TryParse(settings["EntityFramework_SimplifyUserSpecifiedViews"], out _SimplifyUserSpecifiedViews))
  40                             {
  41                                 _SimplifyUserSpecifiedViews = true;
  42                             }
  43
  44                             _settingsInitialized = true;
  45                         }
  46                     }
  47                 }
  48             }
  49         }
  50
  51         private static bool _SimplifyLimitOperations = false;
  52         internal static bool SimplifyLimitOperations
  53         {
  54             get
  55             {
  56                 EnsureSettingsLoaded();
  57                 return _SimplifyLimitOperations;
  58             }
  59         }
  60
  61         private static bool _SimplifyUserSpecifiedViews = true;
  62         internal static bool SimplifyUserSpecifiedViews
  63         {
  64             get
  65             {
  66                 EnsureSettingsLoaded();
  67                 return _SimplifyUserSpecifiedViews;
  68             }
  69         }
  70     }
  71 }