Example #1
0
File: key.go Project: martiniss/gae
// Valid determines if a key is valid, according to a couple rules:
//   - k is not nil
//   - every token of k:
//     - (if !allowSpecial) token's kind doesn't start with '__'
//     - token's kind and appid are non-blank
//     - token is not incomplete
//   - all tokens have the same namespace and appid
func Valid(k ds.Key, allowSpecial bool, aid, ns string) bool {
	if k == nil {
		return false
	}
	if aid != k.AppID() || ns != k.Namespace() {
		return false
	}
	for ; k != nil; k = k.Parent() {
		if !allowSpecial && len(k.Kind()) >= 2 && k.Kind()[:2] == "__" {
			return false
		}
		if k.Kind() == "" || k.AppID() == "" {
			return false
		}
		if k.StringID() != "" && k.IntID() != 0 {
			return false
		}
		if k.Parent() != nil {
			if k.Parent().Incomplete() {
				return false
			}
			if k.Parent().AppID() != k.AppID() || k.Parent().Namespace() != k.Namespace() {
				return false
			}
		}
	}
	return true
}
Example #2
0
File: key.go Project: martiniss/gae
// Equal returns true iff the two keys represent identical key values.
func Equal(a, b ds.Key) (ret bool) {
	ret = (a.Kind() == b.Kind() &&
		a.StringID() == b.StringID() &&
		a.IntID() == b.IntID() &&
		a.AppID() == b.AppID() &&
		a.Namespace() == b.Namespace())
	if !ret {
		return
	}
	ap, bp := a.Parent(), b.Parent()
	return (ap == nil && bp == nil) || Equal(ap, bp)
}
Example #3
0
File: key.go Project: martiniss/gae
func marshalDSKey(b *bytes.Buffer, k ds.Key) {
	if k.Parent() != nil {
		marshalDSKey(b, k.Parent())
	}
	b.WriteByte('/')
	b.WriteString(k.Kind())
	b.WriteByte(',')
	if k.StringID() != "" {
		b.WriteString(k.StringID())
	} else {
		b.WriteString(strconv.FormatInt(k.IntID(), 10))
	}
}
Example #4
0
File: key.go Project: martiniss/gae
// Incomplete returns true iff k doesn't have an id yet.
func Incomplete(k ds.Key) bool {
	return k != nil && k.StringID() == "" && k.IntID() == 0
}