internal T Get <T>(ICacheConsumer consumer, string attribute, Func <T> invokeQuery)
{
T t;
if (this.TryLookupCache <T>(consumer, attribute, out t))
{
return(t);
}
T result;
lock (this.GetConcurrencyLock(attribute))
{
if (this.TryLookupCache <T>(consumer, attribute, out t))
{
result = t;
}
else
{
t = StorageGlobals.ProtectedADCall <T>(invokeQuery);
this.cacheLock.EnterWriteLock();
try
{
OrganizationCache.MiniPropertyBag miniPropertyBag;
if (!this.cache.TryGetValue(consumer.Id, out miniPropertyBag))
{
miniPropertyBag = new OrganizationCache.MiniPropertyBag();
this.cache[consumer.Id] = miniPropertyBag;
}
miniPropertyBag[attribute] = t;
result = t;
}
finally
{
this.cacheLock.ExitWriteLock();
}
}
}
return(result);
}
internal bool TryLookupCache <T>(ICacheConsumer consumer, string attribute, out T result)
{
try
{
this.cacheLock.EnterReadLock();
OrganizationCache.MiniPropertyBag miniPropertyBag;
if (this.cache.TryGetValue(consumer.Id, out miniPropertyBag) && miniPropertyBag.TryGet <T>(attribute, out result))
{
return(true);
}
}
finally
{
try
{
this.cacheLock.ExitReadLock();
}
catch (SynchronizationLockException)
{
}
}
result = default(T);
return(false);
}
