Function BsonDollarInCore

pg_documentdb/src/query/bson_dollar_operators.c:3851–3874

static Datum
BsonDollarInCore(PG_FUNCTION_ARGS, bool hasObjectIdArg)
{
	pgbson *document = PG_GETARG_PGBSON(0);
	bson_iter_t documentIterator;
	TraverseInValidateState state = { 0 };

	pgbsonelement filterElement = { 0 };
	PopulateDollarInValidationState(fcinfo, &state, &filterElement, hasObjectIdArg);

	PgbsonInitIterator(document, &documentIterator);

	TraverseBson(&documentIterator, filterElement.path, &state.traverseState,
				 &CompareExecutionFuncs);
	if (state.hasNull)
	{
		/* If any element in the input is null and the target path cannot be found in the document, we'll choose that document. */
		PG_RETURN_BOOL(state.traverseState.compareResult != CompareResult_Mismatch);
	}
	else
	{
		PG_RETURN_BOOL(state.traverseState.compareResult == CompareResult_Match);
	}
}


/*