/// <summary>
/// Gets the type description for an instance.
/// </summary>
/// <param name="instance">Instance used to supply virtual cache type,
/// if any. Ignored if <typeparamref name="T"/> doesn't implement
/// <see cref="IVirtualCacheType"/> or <paramref name="virtualCacheObject"/>
/// is not null.</param>
/// <param name="virtualCacheObject">Object used to supply custom
/// description. Ignored if <typeparamref name="T"/> doesn't implement
/// <see cref="IVirtualCacheType"/>.</param>
/// <returns>The <see cref="TypeDescription"/></returns>
public static TypeDescription GetDescription(T instance,
IVirtualCacheType virtualCacheObject)
{
var description = Description;
var typeName = TypeName;
if (IsVirtual)
{
string cacheType = null;
if (virtualCacheObject != null)
{
cacheType = virtualCacheObject.CacheTypeName;
}
if (string.IsNullOrEmpty(cacheType) &&
(!_isReferenceType || instance != null))
{
cacheType = ((IVirtualCacheType)instance).CacheTypeName;
}
if (!string.IsNullOrEmpty(cacheType))
{
typeName = cacheType;
description = _virtualDescriptions(cacheType);
}
}
AssertDescriptionFound(description, typeName);
return(description);
}
private static DataBuffer GetKeySpace <T>(IVirtualCacheType virtualCacheObject)
where T : ICacheParameter
{
return(virtualCacheObject != null?
GetKeySpace(default(T), virtualCacheObject) :
GetKeySpace <T>());
}
private static DateTime GetRefreshExpires <T>(T instance, IVirtualCacheType virtualCacheObject)
where T : ICacheParameter
{
var ttl = TypeStatic <T> .GetDescription(instance, virtualCacheObject).Ttl;
return(DateTime.Now.AddSeconds(ttl));
}
private static DataBuffer GetKeySpace <T>(T instance, IVirtualCacheType virtualCacheObject)
where T : ICacheParameter
{
return(TypeStatic <T> .GetDescription(instance, virtualCacheObject).KeySpace);
}