public QueryCallbackStatus InvokeIfReady()
{
QueryCallbackData callback = _callbacks.Dequeue();
bool hasNext = true;
while (hasNext)
{
if (_result != null && _result.Wait(0))
{
Task <SQLResult> f = _result;
Action <QueryCallback, SQLResult> cb = callback._result;
_result = null;
cb(this, f.Result);
hasNext = _result != null;
if (_callbacks.Count == 0)
{
Contract.Assert(!hasNext);
return(QueryCallbackStatus.Completed);
}
// abort chain
if (!hasNext)
{
return(QueryCallbackStatus.Completed);
}
callback = _callbacks.Dequeue();
}
else
{
return(QueryCallbackStatus.NotReady);
}
}
return(QueryCallbackStatus.Completed);
}
public bool InvokeIfReady()
{
QueryCallbackData callback = _callbacks.Peek();
while (true)
{
if (_result != null && _result.Wait(0))
{
Task <SQLResult> f = _result;
Action <QueryCallback, SQLResult> cb = callback._result;
_result = null;
cb(this, f.Result);
_callbacks.Dequeue();
bool hasNext = _result != null;
if (_callbacks.Count == 0)
{
Cypher.Assert(!hasNext);
return(true);
}
// abort chain
if (!hasNext)
{
return(true);
}
callback = _callbacks.Peek();
}
else
{
return(false);
}
}
}
