using System;

using SmartStore.Utilities;

namespace SmartStore.Core.Caching

{

/// <summary>

/// Represents a null cache

/// </summary>

public partial class NullCache : ICacheManager

{

private readonly static ICacheManager s_instance = new NullCache();

public static ICacheManager Instance

{

get { return s_instance; }

}

public T Get<T>(string key, Func<T> acquirer, int? cacheTime = null)

{

if (acquirer == null)

{

return default(T);

}

return acquirer();

}

public void Set(string key, object value, int? cacheTime = null)

{

}

/// <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 Contains(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()

{

}

public IDisposable EnterWriteLock()

{

return ActionDisposable.Empty;

}

}

}