Query hierarchical data structure in firebase

Question

I have an app that stores data in a tree structure, which I\'d like to persist to Firebase.

Each node in the tree are like this:

    node:
        si         


        

Answer 1

I reorganized my data structure to store the 'data' field separately, to make the tree structure small enough to fit entirely on the client side. For each node in the tree, I use the path that leads to the node as the key to store the 'data'. For example,

    root:
      2:
        0:
          3:
            size: 123
            data: [ //list of items ]

is stored as:

    root:
      2:
        0:
          3:
            size: 123
    data:
      203: [ // list of items ]

In this way, I can selectively load each node's data by using the path to that node as the key.