private bool Add(string SessionID, DynamicSourcesCache value, int?timeout = DefaultTimeout)
{
if (SessionID != null)
{
bool writeAllowed = false;
try
{
writeAllowed = TryEnterWriteLock((int)timeout);
if (writeAllowed)
{
innerCache.Add(SessionID, value);
return(true);
}
else
{
}
}
finally
{
if (writeAllowed)
{
cacheLock.ExitWriteLock();
}
}
}
return(false);
}
public SaveStatus Save(string SessionID, DynamicSourcesCache value, int?timeout = DefaultTimeout)
{
SaveStatus status = SaveStatus.Undefined;
try
{
if (TryEnterUpgradeableReadLock((int)timeout))
{
DynamicSourcesCache result = null;
if (innerCache.TryGetValue(SessionID, out result))
{
if (result == value)
{
status = SaveStatus.Unchanged;
}
else if (Update(SessionID, value, timeout))
{
status = SaveStatus.Updated;
}
}
else
{
if (Add(SessionID, value, timeout))
{
status = SaveStatus.Added;
}
}
}
}
finally { cacheLock.ExitUpgradeableReadLock(); }
return(status);
}
private bool Update(string SessionID, DynamicSourcesCache value, int?timeout = DefaultTimeout)
{
if (SessionID != null)
{
try { if (TryEnterWriteLock((int)timeout))
{
innerCache[SessionID] = value; return(true);
}
} finally { cacheLock.ExitWriteLock(); }
}
return(false);
}
private bool DeleteInternal(string SessionID)
{
try {
if (SessionID != null)
{
DynamicSourcesCache result = null;
if (!innerCache.TryGetValue(SessionID, out result) || result == null)
{
return(true);
}
else if (SessionID != null)
{
innerCache.Remove(SessionID); return(true);
}
}
else
{
return(true);
}
}
catch (Exception e) { }
return(false);
}
internal static bool IsEmpty(DynamicSourcesCache cache)
{
return(cache == null || cache.userset == null || !cache.userset.Any() || !cache.userset.SelectMany(x => x.Value.Select(a => a)).Any());
}