nopCommerce_3.00-Nop.Core.Caching
2024-10-15 18:55:12
namespace Nop.Core.Caching
{
/// <summary>
/// Cache manager interface
/// </summary>
public interface ICacheManager
{
/// <summary>
/// Gets or sets the value associated with the specified key.
/// </summary>
/// <typeparam name="T">Type</typeparam>
/// <param name="key">The key of the value to get.</param>
/// <returns>The value associated with the specified key.</returns>
T Get<T>(string key); /// <summary>
/// Adds the specified key and object to the cache.
/// </summary>
/// <param name="key">key</param>
/// <param name="data">Data</param>
/// <param name="cacheTime">Cache time</param>
void Set(string key, object data, int cacheTime); /// <summary>
/// Gets a value indicating whether the value associated with the specified key is cached
/// </summary>
/// <param name="key">key</param>
/// <returns>Result</returns>
bool IsSet(string key); /// <summary>
/// Removes the value with the specified key from the cache
/// </summary>
/// <param name="key">/key</param>
void Remove(string key); /// <summary>
/// Removes items by pattern
/// </summary>
/// <param name="pattern">pattern</param>
void RemoveByPattern(string pattern); /// <summary>
/// Clear all cache data
/// </summary>
void Clear();
}
}
namespace Nop.Core.Caching
{
/// <summary>
/// Represents a NopNullCache
/// </summary>
public partial class NopNullCache : ICacheManager
{
/// <summary>
/// Gets or sets the value associated with the specified key.
/// </summary>
/// <typeparam name="T">Type</typeparam>
/// <param name="key">The key of the value to get.</param>
/// <returns>The value associated with the specified key.</returns>
public T Get<T>(string key)
{
return default(T);
} /// <summary>
/// Adds the specified key and object to the cache.
/// </summary>
/// <param name="key">key</param>
/// <param name="data">Data</param>
/// <param name="cacheTime">Cache time</param>
public void Set(string key, object data, int cacheTime)
{
} /// <summary>
/// Gets a value indicating whether the value associated with the specified key is cached
/// </summary>
/// <param name="key">key</param>
/// <returns>Result</returns>
public bool IsSet(string key)
{
return false;
} /// <summary>
/// Removes the value with the specified key from the cache
/// </summary>
/// <param name="key">/key</param>
public void Remove(string key)
{
} /// <summary>
/// Removes items by pattern
/// </summary>
/// <param name="pattern">pattern</param>
public void RemoveByPattern(string pattern)
{
} /// <summary>
/// Clear all cache data
/// </summary>
public void Clear()
{
}
}
}
using System;
using System.Collections.Generic;
using System.Runtime.Caching;
using System.Text.RegularExpressions; namespace Nop.Core.Caching
{
/// <summary>
/// Represents a MemoryCacheCache
/// </summary>
public partial class MemoryCacheManager : ICacheManager
{
protected ObjectCache Cache
{
get
{
return MemoryCache.Default;
}
} /// <summary>
/// Gets or sets the value associated with the specified key.
/// </summary>
/// <typeparam name="T">Type</typeparam>
/// <param name="key">The key of the value to get.</param>
/// <returns>The value associated with the specified key.</returns>
public T Get<T>(string key)
{
return (T)Cache[key];
} /// <summary>
/// Adds the specified key and object to the cache.
/// </summary>
/// <param name="key">key</param>
/// <param name="data">Data</param>
/// <param name="cacheTime">Cache time</param>
public void Set(string key, object data, int cacheTime)
{
if (data == null)
return; var policy = new CacheItemPolicy();
policy.AbsoluteExpiration = DateTime.Now + TimeSpan.FromMinutes(cacheTime);
Cache.Add(new CacheItem(key, data), policy);
} /// <summary>
/// Gets a value indicating whether the value associated with the specified key is cached
/// </summary>
/// <param name="key">key</param>
/// <returns>Result</returns>
public bool IsSet(string key)
{
return (Cache.Contains(key));
} /// <summary>
/// Removes the value with the specified key from the cache
/// </summary>
/// <param name="key">/key</param>
public void Remove(string key)
{
Cache.Remove(key);
} /// <summary>
/// Removes items by pattern
/// </summary>
/// <param name="pattern">pattern</param>
public void RemoveByPattern(string pattern)
{
var regex = new Regex(pattern, RegexOptions.Singleline | RegexOptions.Compiled | RegexOptions.IgnoreCase);
var keysToRemove = new List<String>(); foreach (var item in Cache)
if (regex.IsMatch(item.Key))
keysToRemove.Add(item.Key); foreach (string key in keysToRemove)
{
Remove(key);
}
} /// <summary>
/// Clear all cache data
/// </summary>
public void Clear()
{
foreach (var item in Cache)
Remove(item.Key);
}
}
}
using System;
using System.Collections;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Web; namespace Nop.Core.Caching
{
/// <summary>
/// Represents a NopStaticCache
/// </summary>
public partial class PerRequestCacheManager : ICacheManager
{
private readonly HttpContextBase _context; /// <summary>
/// Ctor
/// </summary>
/// <param name="context">Context</param>
public PerRequestCacheManager(HttpContextBase context)
{
this._context = context;
} /// <summary>
/// Creates a new instance of the NopRequestCache class
/// </summary>
protected IDictionary GetItems()
{
if (_context != null)
return _context.Items; return null;
} /// <summary>
/// Gets or sets the value associated with the specified key.
/// </summary>
/// <typeparam name="T">Type</typeparam>
/// <param name="key">The key of the value to get.</param>
/// <returns>The value associated with the specified key.</returns>
public T Get<T>(string key)
{
var items = GetItems();
if (items == null)
return default(T); return (T)items[key];
} /// <summary>
/// Adds the specified key and object to the cache.
/// </summary>
/// <param name="key">key</param>
/// <param name="data">Data</param>
/// <param name="cacheTime">Cache time</param>
public void Set(string key, object data, int cacheTime)
{
var items = GetItems();
if (items == null)
return; if (data != null)
{
if (items.Contains(key))
items[key] = data;
else
items.Add(key, data);
}
} /// <summary>
/// Gets a value indicating whether the value associated with the specified key is cached
/// </summary>
/// <param name="key">key</param>
/// <returns>Result</returns>
public bool IsSet(string key)
{
var items = GetItems();
if (items == null)
return false; return (items[key] != null);
} /// <summary>
/// Removes the value with the specified key from the cache
/// </summary>
/// <param name="key">/key</param>
public void Remove(string key)
{
var items = GetItems();
if (items == null)
return; items.Remove(key);
} /// <summary>
/// Removes items by pattern
/// </summary>
/// <param name="pattern">pattern</param>
public void RemoveByPattern(string pattern)
{
var items = GetItems();
if (items == null)
return; var enumerator = items.GetEnumerator();
var regex = new Regex(pattern, RegexOptions.Singleline | RegexOptions.Compiled | RegexOptions.IgnoreCase);
var keysToRemove = new List<String>();
while (enumerator.MoveNext())
{
if (regex.IsMatch(enumerator.Key.ToString()))
{
keysToRemove.Add(enumerator.Key.ToString());
}
} foreach (string key in keysToRemove)
{
items.Remove(key);
}
} /// <summary>
/// Clear all cache data
/// </summary>
public void Clear()
{
var items = GetItems();
if (items == null)
return; var enumerator = items.GetEnumerator();
var keysToRemove = new List<String>();
while (enumerator.MoveNext())
{
keysToRemove.Add(enumerator.Key.ToString());
} foreach (string key in keysToRemove)
{
items.Remove(key);
}
}
}
}
using System; namespace Nop.Core.Caching
{
/// <summary>
/// Extensions
/// </summary>
public static class CacheExtensions
{
public static T Get<T>(this ICacheManager cacheManager, string key, Func<T> acquire)
{
return Get(cacheManager, key, , acquire);
} public static T Get<T>(this ICacheManager cacheManager, string key, int cacheTime, Func<T> acquire)
{
if (cacheManager.IsSet(key))
{
return cacheManager.Get<T>(key);
}
else
{
var result = acquire();
//if (result != null)
cacheManager.Set(key, result, cacheTime);
return result;
}
}
}
}
二、插件
http://www.cnblogs.com/haoxinyue/archive/2013/06/06/3105541.html
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