datacache.cs

SharpNuke源代码

using System;
using System.Collections;
using System.Configuration;
using System.Web;
using System.Web.Caching;

using DotNetNuke.Entities.Portals;
using DotNetNuke.Entities.Tabs;
using DotNetNuke.Services.Cache;

//
// DotNetNuke -  http://www.dotnetnuke.com
// Copyright (c) 2002-2005
// by Shaun Walker ( [e-mail] ) of Perpetual Motion Interactive Systems Inc. ( http://www.perpetualmotion.ca )
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
// documentation files (the "Software"), to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
// to permit persons to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions
// of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
// CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


namespace DotNetNuke.Common.Utilities
{
	public enum CoreCacheType
	{
		Host = 1,
		Portal = 2,
		Tab = 3
	}
	
	public class DataCache
	{
		
		public static bool CachePersistenceEnabled
		{
			get
			{
				if (ConfigurationSettings.AppSettings["EnableCachePersistence"] != null)
				{
					if (ConfigurationSettings.AppSettings["EnableCachePersistence"] == "true")
					{
						return true;
					}
					else
					{
						return false;
					}
				}
				else
				{
					return false;
				}
			}
		}
		
		public static object GetCache(string cacheKey)
		{
			return CachingProvider.Instance().GetItem(cacheKey);
		}
		
		public static object GetPersistentCacheItem(string cacheKey, Type type)
		{
			return CachingProvider.Instance().GetPersistentCacheItem(cacheKey, type);
		}
		
		public static void SetCache (string cacheKey, object o)
		{
			SetCache(cacheKey, o, false);
		}
		
		public static void SetCache (string cacheKey, object o, bool persistAppRestart)
		{
			CachingProvider.Instance().Insert(cacheKey, o, persistAppRestart);
		}
		
		public static void SetCache (string cacheKey, object o, CacheDependency dependency)
		{
			SetCache(cacheKey, o, dependency, false);
		}
		
		public static void SetCache (string cacheKey, object o, CacheDependency dependency, bool persistAppRestart)
		{
			CachingProvider.Instance().Insert(cacheKey, o, dependency, persistAppRestart);
		}
		
		public static void SetCache (string cacheKey, object o, CacheDependency dependency, DateTime absoluteExpiration, 
			TimeSpan slidingExpiration)
		{
			SetCache(cacheKey, o, dependency, absoluteExpiration, slidingExpiration, false);
		}
		
		public static void SetCache (string cacheKey, object o, CacheDependency dependency, 
			DateTime absoluteExpiration, TimeSpan slidingExpiration, bool persistAppRestart)
		{
			CachingProvider.Instance().Insert(cacheKey, o, dependency, absoluteExpiration, slidingExpiration, persistAppRestart);
		}
		
		public static void SetCache (string cacheKey, object o, TimeSpan slidingExpiration)
		{
			SetCache(cacheKey, o, slidingExpiration, false);
		}
		
		public static void SetCache (string cacheKey, object o, TimeSpan slidingExpiration, bool persistAppRestart)
		{
			CachingProvider.Instance().Insert(cacheKey, o, null, Cache.NoAbsoluteExpiration, slidingExpiration, persistAppRestart);
		}
		
		public static void SetCache (string cacheKey, object o, CacheDependency dependency, DateTime absoluteExpiration, 
			TimeSpan slidingExpiration, CacheItemPriority priority, CacheItemRemovedCallback onRemoveCallback)
		{
			SetCache(cacheKey, o, dependency, absoluteExpiration, slidingExpiration, priority, onRemoveCallback, false);
		}
		
		public static void SetCache (string cacheKey, object o, CacheDependency dependency, DateTime absoluteExpiration, 
			TimeSpan slidingExpiration, CacheItemPriority priority, CacheItemRemovedCallback onRemoveCallback, bool persistAppRestart)
		{
			CachingProvider.Instance().Insert(cacheKey, o, null, absoluteExpiration, slidingExpiration, persistAppRestart);
		}
		
		public static void SetCache (string cacheKey, object o, DateTime absoluteExpiration)
		{
			SetCache(cacheKey, o, absoluteExpiration, false);
		}
		
		public static void SetCache (string cacheKey, object o, DateTime absoluteExpiration, bool persistAppRestart)
		{
			CachingProvider.Instance().Insert(cacheKey, o, null, absoluteExpiration, Cache.NoSlidingExpiration, persistAppRestart);
		}
		
		public static void RemoveCache (string cacheKey)
		{
			CachingProvider.Instance().Remove(cacheKey);
		}
		
		public static void RemovePersistentCacheItem (string cacheKey)
		{
			CachingProvider.Instance().RemovePersistentCacheItem(cacheKey);
		}
		
		[Obsolete("This method is obsolete. Use the new specific methods: ClearHostCache, ClearPortalCache, ClearTabCache.")]
		public static void ClearCoreCache (CoreCacheType type, int id, bool cascade)
		{
			switch (type)
			{
				case CoreCacheType.Host:
					ClearHostCache(cascade);
					break;
				case CoreCacheType.Portal:
					ClearPortalCache(id, cascade);
					break;
				case CoreCacheType.Tab:
					TabInfo tabInfo;
                    TabController tabController = new TabController();
                    tabInfo = tabController.GetTab(id);
                    if (tabInfo != null)
                        ClearTabCache(id, tabInfo.PortalID);
					break;
			}
		}
		
		public static void ClearHostCache (bool cascade)
		{
			RemoveCache("GetHostSettings");
			RemoveCache("GetPortalByAlias");
			RemoveCache("CSS");
			if (cascade)
			{
				PortalController portalController = new PortalController();
				ArrayList arrPortals = portalController.GetPortals();
				
				foreach (PortalInfo portalInfo in arrPortals)
				{
					ClearPortalCache(portalInfo.PortalID, cascade);
				}
			}
		}
		
		public static void ClearPortalCache (int portalId, bool cascade)
		{
			ArrayList arrTabs = GetCache("GetTabs" + portalId.ToString()) as ArrayList;

			RemovePersistentCacheItem("GetPortalSettings" + portalId.ToString());
			RemoveCache("GetTabs" + portalId.ToString());
			
			if (cascade)
			{
				if (arrTabs == null)
				{
					TabController tabController = new TabController();
					arrTabs = tabController.GetTabs(portalId);
				}
				
				foreach (TabInfo tabInfo in arrTabs)
				{
					ClearTabCache(tabInfo.TabID);
				}
				
                RemoveCache("GetTabPermissionsByPortal" + portalId.ToString());
			}
		}
		
		public static void ClearTabCache(int tabId, int portalId)
		{
			ClearTabCache(tabId);
			RemoveCache("GetTabPermissionsByPortal" + portalId.ToString());
		}

		private static void ClearTabCache (int tabId)
		{
			RemoveCache("GetTab" + tabId.ToString());
			RemoveCache("GetPortalTabModules" + tabId.ToString());
		}
	}
	
}