/// <summary>
/// 设置缓存项的值。
/// </summary>
/// <param name="key">缓存项的原始键值。</param>
/// <param name="value">缓存项的值。</param>
/// <param name="methodName">调用当前的方法的方法名称。</param>
/// <param name="expiration">缓存项的过期信息实例对象：<c>null</c> 表示滑动十分钟过期。</param>
protected void SetValue(string key, object value, string methodName, Expiration expiration)
{
if (ReferenceEquals(key, null))
{
throw new ArgumentNullException("[BaseCacheContainer].[SetValue].key");
}
if (ReferenceEquals(value, null))
{
return;
}
expiration = expiration ?? Expiration.CreateInstance();
if (expiration.Container != null && !ReferenceEquals(expiration.Container, this))
{
throw new ArgumentException("[BaseCacheContainer].[SetValue].expiration.Container 已存在，不能添加！");
}
expiration.Container = this;
var notification = expiration.Notification ?? CacheNotification.CreateInstance();
notification.Key = key;
notification.SetValue(value, false);
if (notification.Expiration != null && !ReferenceEquals(notification.Expiration, expiration))
{
throw new ArgumentException("[BaseCacheContainer].[SetValue].expiration.[Notification].Expiration 已存在，过期对象处理错误！");
}
notification.Expiration = expiration;
Push(GetKey(key), methodName, expiration);
}
/// <summary>
/// 从一个时间间隔创建一个缓存过期设置。
/// </summary>
/// <param name="time">从当前到过期的时间间隔。</param>
/// <param name="notification">缓存过期通知信息：<c>null</c> 表示无通知。</param>
/// <returns>一个缓存过期设置信息的实例对象。</returns>
public static Expiration FromSliding(TimeSpan span, CacheNotification notification = null)
{
return(new Expiration
{
DeadTime = DateTime.Now.Add(span),
AutoDelay = true,
Notification = notification ?? CacheNotification.CreateInstance(),
});
}
/// <summary>
/// 从一个绝对时间点创建一个缓存过期设置。
/// </summary>
/// <param name="time">过期时间点。</param>
/// <param name="notification">缓存过期通知信息：<c>null</c> 表示无通知。</param>
/// <returns>一个缓存过期设置信息的实例对象。</returns>
public static Expiration FromAbsolute(DateTime time, CacheNotification notification = null)
{
return(new Expiration
{
DeadTime = time,
AutoDelay = false,
Notification = notification ?? CacheNotification.CreateInstance(),
});
}
