c++ - Getting boost property_tree parent node -

i using boost property_tree in program. i've set tree using custom path type. i'm looking getting specific node's parent node id.

here example:

metastoragetree tree;  typedef boost::property_tree::basic_ptree<framework::commonclientserver::interfacepathchain_t, metastoragetreenode*>     metastoragetreenode_t; class metastoragetree : public metastoragetreenode_t;  metastoragetreenode* node = new metastoragetreenode(1); metastoragetreenode* node1 = new metastoragetreenode(2); tree.put(interfacepathchain_t{0}, node); tree.put(interfacepathchain_t{0, 0}, node1); tree.put(interfacepathchain_t{0, 1}, node1); tree.put(interfacepathchain_t{0, 0, 0}, node); tree.put(interfacepathchain_t{0, 1, 0}, node1); tree.put(interfacepathchain_t{0, 1, 1}, node);  //interfacepathchain_t vector<int> 

and result goes expected:

{0}: 1     {0}: 2         {0}: 1     {1}: 2         {0}: 2         {1}: 1 

what need way of getting full id of node without permanently storing it. thinking of way of getting parent node id , pushing front of path , on top level. didn't seem able find way in property_tree. possible? if no, there other ways of calculating full path case?

for example node path {0, 1, 0}:

1. id == 0 => path = {0}
2. parent != null => parent.id == 1 => path = {1, 0}
3. parent != null => parent.id == 0 => path = {0, 1, 0}
4. parent == null => end

you can't.

boost ptree nodes self-contained , not know containing datastructure (it's the "tree" equivalent of singly-linked list).

as best approximation child inside parent, e.g. in c++: boost ptree relative key.

this presumes have "a root" available search in.