Method fetchFirst

src/jrd/jrd.cpp:5380–5407

int JResultSet::fetchFirst(CheckStatusWrapper* user_status, void* buffer)
{
	try
	{
		EngineContextHolder tdbb(user_status, this, FB_FUNCTION);
		check_database(tdbb);

		try
		{
			state = cursor->fetchFirst(tdbb, static_cast<UCHAR*>(buffer));
		}
		catch (const Exception& ex)
		{
			transliterateException(tdbb, ex, user_status, "JResultSet::fetchFirst");
			return IStatus::RESULT_ERROR;
		}

		trace_warning(tdbb, user_status, "JResultSet::fetchFirst");
	}
	catch (const Exception& ex)
	{
		ex.stuffException(user_status);
		return IStatus::RESULT_ERROR;
	}

	successful_completion(user_status);
	return (state == 0) ? IStatus::RESULT_OK : IStatus::RESULT_NO_DATA;
}


int JResultSet::fetchLast(CheckStatusWrapper* user_status, void* buffer)