Function validateNQuads

edgraph/server.go:2311–2355

(set, del []*api.NQuad, guardReserved reservedPredicateGuard)

}

func validateNQuads(set, del []*api.NQuad, guardReserved reservedPredicateGuard) error {
	for _, nq := range set {
		if err := validatePredName(nq.Predicate); err != nil {
			return err
		}
		var ostar bool
		if o, ok := nq.ObjectValue.GetVal().(*api.Value_DefaultVal); ok {
			ostar = o.DefaultVal == x.Star
		}
		if nq.Subject == x.Star || nq.Predicate == x.Star || ostar {
			return errors.Errorf("Cannot use star in set n-quad: %+v", nq)
		}
		if err := validateKeys(nq); err != nil {
			return errors.Wrapf(err, "key error: %+v", nq)
		}
		if err := guardReserved(nq); err != nil {
			return err
		}
	}
	for _, nq := range del {
		if err := validatePredName(nq.Predicate); err != nil {
			return err
		}
		var ostar bool
		if o, ok := nq.ObjectValue.GetVal().(*api.Value_DefaultVal); ok {
			ostar = o.DefaultVal == x.Star
		}
		if nq.Subject == x.Star || (nq.Predicate == x.Star && !ostar) {
			return errors.Errorf("Only valid wildcard delete patterns are 'S * *' and 'S P *': %v", nq)
		}
		// guardReserved matches a named predicate, so a 'S P *' delete of a
		// value-locked predicate is caught here. A 'S * *' delete (predicate is
		// the wildcard) cannot be matched per-predicate: the subject's predicates
		// aren't known at validation, and the wildcard is expanded post-Raft in
		// worker where the request's TrustMarker is gone. Bulk subject deletes
		// that remove a value-locked predicate are outside the value lock's scope
		// and are gated by ACL predicate-level permissions.
		if err := guardReserved(nq); err != nil {
			return err
		}
		// NOTE: we dont validateKeys() with delete to let users fix existing mistakes
		// with bad predicate forms. ex: foo@bar ~something
	}
	return nil
}

func validateKey(key string) error {
	switch {