Function bsonaggvalue_out

pg_documentdb/src/aggregation/bson_aggregates.c:2641–2667

* bsonaggvalue_out: Convert BsonAggValue to text output. * Returns the value wrapped as {"": value} with an optional "collation" field. * Uses hex representation by default, or extended JSON when the GUC is set. */

 * Uses hex representation by default, or extended JSON when the GUC is set.
 */
Datum
bsonaggvalue_out(PG_FUNCTION_ARGS)
{
	BsonAggValue *state = (BsonAggValue *) PG_GETARG_POINTER(0);

	pgbson_writer writer;
	PgbsonWriterInit(&writer);
	AppendBsonAggValueToWriter(&writer, &state->value);
	if (state->collationString != NULL)
	{
		PgbsonWriterAppendUtf8(&writer, "collation", strlen("collation"),
							   state->collationString);
	}
	pgbson *bson = PgbsonWriterGetPgbson(&writer);

	const char *outputString = NULL;
	if (BsonTextUseJsonRepresentation)
	{
		outputString = PgbsonToCanonicalExtendedJson(bson);
	}
	else
	{
		outputString = PgbsonToHexadecimalString(bson);
	}

	PG_RETURN_CSTRING(outputString);
}


/*