Question

The output for the JSON data structure with 100 objects should look like this:

[{
    "Value": "Sens1_001",
    "Parent": Null,
    "Child": {
        "Value": "Sens2_068",
        "Parent":"Sens1_001",
        "Child" : {
            "Value": "Sens3_034",
            "Parent": "Sen2_068",
            "Child": null,
            "z_cordinate": 5
                  },
        "z_cordinate": 0
            },
        "z_cordonate": -5
    },
{
    "Value": "Sens1_002",
    "Parent": Null,
    "Child": {
        "Value": "Sens2_037",
        "Parent":"Sens1_002",
        "Child" : {
            "Value": "Sens3_099",
                              "Parent": "Sen2_037",
                              "Child": null,
                              "z_cordinate": 5
                   },
             "z_cordinate": 0
             },
  "z_cordonate": -5
},
{
   "Value": "Sens1_003",
    "Parent": Null,
    "Child": {
        "Value": "Sens2_012",
        "Parent":"Sens1_003",
        "Child" : {
            "Value": "Sens3_054",
            "Parent": "Sen2_012",
            "Child": null,
            "z_cordinate": 5
                  },
        "z_cordinate": 0
             },   
        "z_cordonate": -5
},
.
.
. // till 100th object
{
    "Value": "Sens1_100",
    "Parent": Null,
    "Child": {
        "Value": "Sens2_001",
        "Parent":"Sens1_100",
        "Child" : {
            "Value": "Sens3_021",
            "Parent": "Sen2_001",
            "Child": null,
            "z_cordinate": 5
                  },
    "z_cordinate": 0
             },
    "z_cordonate": -5
}]  

NOTE: I Edited the sample looking object, please review one more time, I changed end braces to look like more an array rather normal object. JSON is secondary, my array should serve my purpose.

Purpose:

How Could I access the objects X.parent.child fashion. I’ve some knowledge but not enough to structure this object. I’m also planning to access the objects either ways, Grapndparent – Parent – Child and Me – Parent – Grandparent. How could I do that? The objects parent – child relationship should be meaningful rather random and moreover a parent can have more than one child.

Answer 1

Since all the ‘value’ key are unique, you can have it as the dictionary key.
So design it like:

{
 "Sens1_001": {
               "value": "Sens1_001",
               "parent": null,
               "child": "Sen2_068",
               "z_coordinate": 5
              },
 "Sens2_068": {
               "value": "Sens2_068",
               "parent": "Sens1_001",
               "child": "Sen3_098",
               "z_coordinate": -5
              }
 .
 .
 .
}

Once this dictionary ‘dict’ is ready, if you know the value of the grandparent, then:

grandparent = dict[value];
parent = dict[grandparent[child]];
child = dict[parent[child]];

Similarly if you know the child’s value,

child = dict[value];
parent = dict[child[parent]];
grandparent = dict[parent[parent]];

Tell me if you dont get it still.