func (this *builder) VisitIndexNest(node *algebra.IndexNest) (interface{}, error) { _, err := node.Left().Accept(this) if err != nil { return nil, err } right := node.Right() right.SetDefaultNamespace(this.namespace) namespace, err := this.datastore.NamespaceByName(right.Namespace()) if err != nil { return nil, err } keyspace, err := namespace.KeyspaceByName(right.Keyspace()) if err != nil { return nil, err } nest, err := this.buildIndexNest(keyspace, node) if err != nil { return nil, err } this.subChildren = append(this.subChildren, nest) return nil, nil }