Function ExplainRawCompositeScanToWriter

pg_documentdb/src/index_am/rum.c:1722–1755

void
ExplainRawCompositeScanToWriter(Relation index_rel, List *indexQuals, List *indexOrderBy,
								ScanDirection indexScanDir, pgbson_writer *writer)
{
	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];
		pgbson_writer keyWriter;
		PgbsonWriterStartDocument(writer, "keyPattern", -1, &keyWriter);
		SerializeCompositeIndexKeyForExplainToWriter(
			index_rel->rd_opcoptions[0], &keyWriter);
		PgbsonWriterEndDocument(writer, &keyWriter);
		enableCompositeReducedCorrelatedTerms =
			options->enableCompositeReducedCorrelatedTerms;
	}

	ExplainCompositeProperties(writer, multiKeyStatusFunc, index_rel,
							   enableCompositeReducedCorrelatedTerms, indexQuals,
							   indexOrderBy,
							   supportsOrderedOperatorScans,
							   PgbsonExplainWriterWriteBool,
							   PgbsonExplainWriterWriteStringList);
}


void