Method genMap

src/jrd/RecordSourceNodes.cpp:1701–1719

Generate a value map for a record selection expression.

// Generate a value map for a record selection expression.
void AggregateSourceNode::genMap(DsqlCompilerScratch* dsqlScratch, UCHAR blrVerb, dsql_map* map)
{
	USHORT count = 0;

	for (dsql_map* temp = map; temp; temp = temp->map_next)
		++count;

	//if (count >= STREAM_MAP_LENGTH) // not sure if the same limit applies
	//	ERR_post(Arg::Gds(isc_too_many_contexts)); // maybe there's better msg.

	dsqlScratch->appendUChar(blrVerb);
	dsqlScratch->appendUShort(count);

	for (dsql_map* temp = map; temp; temp = temp->map_next)
	{
		dsqlScratch->appendUShort(temp->map_position);
		GEN_expr(dsqlScratch, temp->map_node);
	}
}

AggregateSourceNode* AggregateSourceNode::copy(thread_db* tdbb, NodeCopier& copier) const
{