Method process

src/jrd/recsrc/SingularStream.cpp:97–137

}

void SingularStream::process(thread_db* tdbb) const
{
	Request* const request = tdbb->getRequest();
	Impure* const impure = request->getImpure<Impure>(m_impure);

	const FB_SIZE_T streamCount = m_streams.getCount();
	MemoryPool& pool = *tdbb->getDefaultPool();
	HalfStaticArray<record_param, 16> rpbs(pool, streamCount);

	for (FB_SIZE_T i = 0; i < streamCount; i++)
	{
		rpbs.add(request->req_rpb[m_streams[i]]);
		record_param& rpb = rpbs.back();
		Record* const orgRecord = rpb.rpb_record;

		if (orgRecord)
			rpb.rpb_record = FB_NEW_POOL(pool) Record(pool, orgRecord);
	}

	if (m_next->getRecord(tdbb))
		status_exception::raise(Arg::Gds(isc_sing_select_err));

	for (FB_SIZE_T i = 0; i < streamCount; i++)
	{
		record_param& rpb = request->req_rpb[m_streams[i]];
		Record* orgRecord = rpb.rpb_record;
		rpb = rpbs[i];
		const AutoPtr<Record> newRecord(rpb.rpb_record);

		if (newRecord)
		{
			if (!orgRecord)
				BUGCHECK(284);	// msg 284 cannot restore singleton select data

			rpb.rpb_record = orgRecord;
			orgRecord->copyFrom(newRecord);
		}
	}

	impure->irsb_flags |= irsb_singular_processed;
}

bool SingularStream::refetchRecord(thread_db* tdbb) const
{