Is it possible to cache function output only when null is passed as a parameter? Something like this:
[WebMethod(CacheDuration = 360, NullOnly = true)]
public SomeClass MyMethod(MyClass whatever)
{
//do something...
return something;
}
So when whatever == null the function return cached output, and when it's not null it generates output without caching it.
I don't know if there is more declarative method but you can easily cache the result in the regular cache and check if the argument is null like this:
public SomeClass MyMethod(MyClass whatever)
{
if(whatever == null)
{
SomeClass result = Cache["MyMethodCache"] as SomeClass;
if(result != null)
return result;
}
//do something...
if(whatever == null)
{
Cache.Add("MyMethodCache",something, ... ); //duration, expiration policy, etc.
}
return something;
}
However this version will need to serialize the result each time even it is retrieved through cache.
