Function ExplainRawCompositeScan

pg_documentdb/src/index_am/rum.c:1758–1788

void
ExplainRawCompositeScan(Relation index_rel, List *indexQuals, List *indexOrderBy,
						ScanDirection indexScanDir, struct ExplainState *es)
{
	bool supportsOrderedOperatorScans = false;
	GetMultikeyStatusFunc multiKeyStatusFunc = NULL;
	CanOrderInIndexScan isIndexScanOrdered = NULL;
	if (!GetCompositeOpClassWithProps(index_rel, &supportsOrderedOperatorScans,
									  &multiKeyStatusFunc, &isIndexScanOrdered))
	{
		return;
	}

	bool enableCompositeReducedCorrelatedTerms = false;
	if (index_rel->rd_opcoptions != NULL)
	{
		BsonGinCompositePathOptions *options =
			(BsonGinCompositePathOptions *) index_rel->rd_opcoptions[0];
		const char *keyString = SerializeCompositeIndexKeyForExplain(
			index_rel->rd_opcoptions[0]);
		ExplainPropertyText("indexKey", keyString, es);
		enableCompositeReducedCorrelatedTerms =
			options->enableCompositeReducedCorrelatedTerms;
	}

	ExplainCompositeProperties(es, multiKeyStatusFunc, index_rel,
							   enableCompositeReducedCorrelatedTerms, indexQuals,
							   indexOrderBy,
							   supportsOrderedOperatorScans,
							   ExplainWriterWriteBool, ExplainWriterWriteStringList);
}


static void