private static bool IsSimpleCaching(CacheExpires expires, ICacheSignal signal)
{
// signal provided - complex caching
if (signal != null)
return false;
// no signal, no expires - simple caching
if (expires == null)
return true;
// expires absolute has meaningful value - complex caching
if (expires.Absolute != CacheExpires.NoAbsoluteExpiration &&
expires.Absolute != DateTime.MaxValue)
{
return false;
}
// expires sliding has meaningful value - complex caching
if (expires.Sliding != CacheExpires.NoSlidingExpiration &&
expires.Sliding != TimeSpan.MaxValue &&
expires.Sliding != TimeSpan.Zero)
{
return false;
}
// no signal, no meaningful expires value - simple caching
return true;
}
public CacheScopeImpl(SparkViewBase view, string identifier, CacheExpires expires)
{
_identifier = identifier;
_expires = expires;
_previousCacheScope = view._currentCacheScope;
_cacheService = view.CacheService ?? _nullCacheService;
_originator = new CacheOriginator(view.SparkViewContext);
}
protected bool BeginCachedContent(string site, CacheExpires expires, params object[] key)
{
this._currentCacheScope = new CacheScopeImpl(this, CacheUtilities.ToIdentifier(site, key), expires);
if (this._currentCacheScope.Begin())
{
return(true);
}
this.EndCachedContent();
return(false);
}
public void Store(string identifier, CacheExpires expires, ICacheSignal signal, object item)
{
if (IsSimpleCaching(expires, signal))
{
// use MR cache service for simple identifier-only caching
_monorailCacheProvider.Store(identifier, item);
}
else
{
// use the httpcontext cache when storing with expires or signal args in effect
_fallbackCacheService.Store(identifier, expires, signal, item);
}
}
public void Store(string identifier, CacheExpires expires, ICacheSignal signal, object item)
{
}
public CacheScopeImpl(SparkViewBase view, string identifier, CacheExpires expires)
{
_identifier = identifier;
_expires = expires;
_previousCacheScope = view._currentCacheScope;
_cacheService = view.CacheService ?? _nullCacheService;
_originator = new CacheOriginator(view.SparkViewContext);
}
protected bool BeginCachedContent(string site, CacheExpires expires, params object[] key)
{
_currentCacheScope = new CacheScopeImpl(this, CacheUtilities.ToIdentifier(site, key), expires);
if (_currentCacheScope.Begin())
return true;
EndCachedContent();
return false;
}
public void Store(string identifier, CacheExpires expires, ICacheSignal signal, object item)
{
}
public void Store(string identifier, Spark.CacheExpires expires, ICacheSignal signal, object item)
{
this._cache.Insert(identifier, item, SignalDependency.For(signal), (expires ?? Spark.CacheExpires.Empty).Absolute, (expires ?? Spark.CacheExpires.Empty).Sliding);
}
