37 #ifndef __EST_RELATION_TREE_H__
38 #define __EST_RELATION_TREE_H__
77 {
return parent(as(n,relname)); }
85 {
return daughter1(as(n,relname)); }
90 {
return daughter2(as(n,relname)); }
95 {
return daughtern(as(n,relname)); }
100 {
return next_sibling(as(n,relname)); }
105 {
return prev_sibling(as(n,relname)); }
110 {
return root(as(n,relname)); }