Function API_ROUTINE isc_que_events

src/yvalve/why.cpp:2992–3026

Que request for event notification.

// Que request for event notification.
ISC_STATUS API_ROUTINE isc_que_events(ISC_STATUS* userStatus, isc_db_handle* dbHandle, SLONG* id,
	USHORT length, const UCHAR* eventsData, FPTR_EVENT_CALLBACK ast, void* arg)
{
	StatusVector status(userStatus);
	CheckStatusWrapper statusWrapper(&status);
	RefPtr<YEvents> events;

	try
	{
		RefPtr<YAttachment> attachment(translateHandle(attachments, dbHandle));

		RefPtr<QueCallback> callback(FB_NEW QueCallback(ast, arg));
		events = attachment->queEvents(&statusWrapper, callback, length, eventsData);
		if (events)
			*id = FB_API_HANDLE_TO_ULONG(events->getHandle());

		callback->setEvents(events);		// should be called in case of NULL events too
		if (status.getState() & IStatus::STATE_ERRORS)
		{
			return status[1];
		}
	}
	catch (const Exception& e)
	{
		if (events)
		{
			*id = 0;
			events->release();
		}

		e.stuffException(&statusWrapper);
	}

	return status[1];
}


// Get a segment from a blob opened for reading.