Method compile

src/jrd/optimizer/Optimizer.cpp:676–705

//

RecordSource* Optimizer::compile(RseNode* subRse, BoolExprNodeStack* parentStack)
{
	// dimitr:	it makes no sense to optimize sub-RSE for first rows
	//			if we're going to sort/aggregate the resultset afterwards
	const bool subFirstRows = firstRows && !rse->rse_sorted && !rse->rse_aggregate;

	Optimizer subOpt(tdbb, csb, subRse, subFirstRows);
	const auto rsb = subOpt.compile(parentStack);

	if (parentStack && subOpt.isInnerJoin())
	{
		// If any parent conjunct was utilized, update our copy of its flags.
		// Currently used for inner joins only, although could also be applied
		// to conjuncts utilized for outer streams of outer joins.

		for (auto subIter = subOpt.getParentConjuncts(); subIter.hasData(); ++subIter)
		{
			for (auto selfIter = getConjuncts(); selfIter.hasData(); ++selfIter)
			{
				if (*selfIter == *subIter)
				{
					selfIter |= subIter.getFlags();
					break;
				}
			}
		}
	}

	return rsb;
}

RecordSource* Optimizer::compile(BoolExprNodeStack* parentStack)
{