public static async Task <T> GetOrAdd <T>(this ICacheItem <T> self, ICacheItemLock lockObj, Func <Task <T> > getProc, bool continueOnCapturedContext = false)
{
var cacheValue = await self.Get().ConfigureAwait(continueOnCapturedContext);
if (cacheValue.HasValue)
{
return(cacheValue.Value);
}
await lockObj.Acquire().ConfigureAwait(continueOnCapturedContext);;
try
{
cacheValue = await self.Get().ConfigureAwait(continueOnCapturedContext);
if (cacheValue.HasValue)
{
return(cacheValue.Value);
}
var value = await getProc().ConfigureAwait(continueOnCapturedContext);
await self.Set(value).ConfigureAwait(continueOnCapturedContext);
return(value);
}
finally
{
await lockObj.Release().ConfigureAwait(continueOnCapturedContext);
}
}
public static object SetProperty(
[ExcelArgument(Name = "ObjectHandle", Description = "Handle to an object.")] string h,
[ExcelArgument(Name = "Property", Description = "Name of property to which data will be assigned.")] string p,
[ExcelArgument(Name = "PropertyData", Description = "Data to be assiged.")] object o)
{
object res = ExcelError.ExcelErrorNA;
if (_cache.ContainsKey(h))
{
ICacheItem handle = _cache.Lookup(h) as CacheItem;
CacheItemProperty cip = handle.CacheType.Property(p);
if (handle.CacheType.Exception == null)
{
Exception e = null;
o = ParameterCleaner.Arg(o, cip.Type, out e);
if (e == null)
{
handle.Set(p, o);
if (handle.Exception != null)
{
res = handle.Exception.Message;
}
else
{
res = string.Format("SET {0}", p);
}
}
else
{
res = e.Message;
}
}
else
{
res = handle.CacheType.Exception.Message;
}
}
return(res);
}
