Merge Json with matching values

Question

I have a JSON file which has duplicate keys and i want to merge the duplicate key and their values to one record.

Example:

The Json looks like this:

{
  "numbers": {
    "0BJA10GH001": {
      "links": [
        {
          "name": "RI-Fliessbild: RG MFB L3 RI_002",
          "path": "/C1_RI-Fliessbilder/C1.1/3/RG MFB L3 RI_002.pdf",
          "searchNumber": true
        },
        {
          "name": "Katalog Sensor: TGM / siehe 0BJA10GH001 -1_5.1",
          "path": "/1_Verfahrenstechnik/Teil B/1_B5/1_B5.1/01_0BJA10GH001.pdf",
          "searchNumber": false
        },
        {
          "name": "Datenblatt: 0BJA10GH001",
          "path": "/Datenblaetter Messstellenliste/RG MFB L3 RI_002/0BJA10GH001.pdf",
          "searchNumber": false
        }
      ],
      "aliases": [
        "0BJA10GH001"
      ]
    },


"0BJA10GH001": {
  "links": [
    {
      "name": "RI-Fliessbild: RG MFB L3 RI_002",
      "path": "/C1_RI-Fliessbilder/C1.1/3/RG MFB L3 RI_002.pdf",
      "searchNumber": true
    },
    {
      "name": "Komponentenbeschreibung: TGM / ---",
      "path": "/1_Verfahrenstechnik/Teil B/1_B5/1_B5.1/01_0BJA10GH001.pdf",
      "searchNumber": false
    },
    {
      "name": "Datenblatt: 0BJA10GH001",
      "path": "/Datenblaetter Apparateliste/RG MFB L3 RI_002/0BJA10GH001.pdf",
      "searchNumber": false
    }
  ],
  "aliases": [
    "0BJA10GH001"
  ]
}

} }

I want it to look like that:

{
  "numbers": {
    "0BJA10GH001": {
      "links": [
        {
          "name": "RI-Fliessbild: RG MFB L3 RI_002",
          "path": "/C1_RI-Fliessbilder/C1.1/3/RG MFB L3 RI_002.pdf",
          "searchNumber": true
        },
        {
          "name": "Katalog Sensor: TGM / siehe 0BJA10GH001 -1_5.1",
          "path": "/1_Verfahrenstechnik/Teil B/1_B5/1_B5.1/01_0BJA10GH001.pdf",
          "searchNumber": false
        },
        {
          "name": "Datenblatt: 0BJA10GH001",
          "path": "/Datenblaetter Messstellenliste/RG MFB L3 RI_002/0BJA10GH001.pdf"
        },
        {
          "name": "Komponentenbeschreibung: TGM / ---",
          "path": "/1_Verfahrenstechnik/Teil B/1_B5/1_B5.1/01_0BJA10GH001.pdf",
          "searchNumber": false
        },
        {
          "name": "Datenblatt: 0BJA10GH001",
          "path": "/Datenblaetter Apparateliste/RG MFB L3 RI_002/0BJA10GH001.pdf",
          "searchNumber": false
        }
      ],
      "aliases": [
        "0BJA10GH001"
      ]
    }
  }
}

The two keys "0BJA10GH001" which are the same merge and the duplicate values inside get removed.

var SeatWithCat = [{"0BJA10GH001" : { "links" : [{ "name" : "RI-Fliessbild: RG MFB L3 RI_002", "path" : "/C1_RI-Fliessbilder/C1.1/3/RG MFB L3 RI_002.pdf", "searchNumber" : true },{ "name" : "Katalog Sensor: TGM / siehe 0BJA10GH001 -1_5.1", "path" : "/1_Verfahrenstechnik/Teil B/1_B5/1_B5.1/01_0BJA10GH001.pdf", "searchNumber" : false },{ "name" : "Datenblatt: 0BJA10GH001", "path" : "/Datenblaetter Messstellenliste/RG MFB L3 RI_002/0BJA10GH001.pdf", "searchNumber" : false }], "aliases" : ["0BJA10GH001"] },
"0BJA10GH001" : { "links" : [{ "name" : "RI-Fliessbild: RG MFB L3 RI_002", "path" : "/C1_RI-Fliessbilder/C1.1/3/RG MFB L3 RI_002.pdf", "searchNumber" : true },{ "name" : "Komponentenbeschreibung: TGM / ---", "path" : "/1_Verfahrenstechnik/Teil B/1_B5/1_B5.1/01_0BJA10GH001.pdf", "searchNumber" : false },{ "name" : "Datenblatt: 0BJA10GH001", "path" : "/Datenblaetter Apparateliste/RG MFB L3 RI_002/0BJA10GH001.pdf", "searchNumber" : false }], "aliases" : ["0BJA10GH001"] },
"0BMC10GH001" : { "links" : [{ "name" : "RI-Fliessbild: RG MFB L3 RI_002", "path" : "/C1_RI-Fliessbilder/C1.1/3/RG MFB L3 RI_002.pdf", "searchNumber" : true },{ "name" : "Katalog Sensor: TGM / siehe 0BMC10GH001 -1_5.1", "path" : "/1_Verfahrenstechnik/Teil B/1_B5/1_B5.1/01_0BMC10GH001.pdf", "searchNumber" : false },{ "name" : "Datenblatt: 0BMC10GH001", "path" : "/Datenblaetter Messstellenliste/RG MFB L3 RI_002/0BMC10GH001.pdf", "searchNumber" : false }], "aliases" : ["0BMC10GH001"] },
"0BMC10GH001" : { "links" : [{ "name" : "RI-Fliessbild: RG MFB L3 RI_002", "path" : "/C1_RI-Fliessbilder/C1.1/3/RG MFB L3 RI_002.pdf", "searchNumber" : true },{ "name" : "Komponentenbeschreibung: TGM / ---", "path" : "/1_Verfahrenstechnik/Teil B/1_B5/1_B5.1/01_0BMC10GH001.pdf", "searchNumber" : false },{ "name" : "Datenblatt: 0BMC10GH001", "path" : "/Datenblaetter Apparateliste/RG MFB L3 RI_002/0BMC10GH001.pdf", "searchNumber" : false }], "aliases" : ["0BMC10GH001"] },
"0CFB01BB020" : { "links" : [{ "name" : "RI-Fliessbild: 90034652", "path" : "/C1_RI-Fliessbilder/C1.1/1_2/90034652.pdf", "searchNumber" : true },{ "name" : "Komponentenbeschreibung: Messer Gas / HCl in N2", "path" : "/1_Verfahrenstechnik/Teil B/1_B7/1_B7.5/01_0CFB01BB020.pdf", "searchNumber" : false },{ "name" : "Datenblatt: 0CFB01BB020", "path" : "/Datenblaetter Apparateliste/90034652/0CFB01BB020.pdf", "searchNumber" : false }], "aliases" : ["0CFB01BB020"] },
"0CFB01BB021" : { "links" : [{ "name" : "RI-Fliessbild: 90034652", "path" : "/C1_RI-Fliessbilder/C1.1/1_2/90034652.pdf", "searchNumber" : true },{ "name" : "Komponentenbeschreibung: Messer Gas / NH3 in N2", "path" : "/1_Verfahrenstechnik/Teil B/1_B7/1_B7.5/01_0CFB01BB021.pdf", "searchNumber" : false },{ "name" : "Datenblatt: 0CFB01BB021", "path" : "/Datenblaetter Apparateliste/90034652/0CFB01BB021.pdf", "searchNumber" : false }], "aliases" : ["0CFB01BB021"] }}];

function combine(arr) {
  var combined = arr.reduce(function(result, item) {
    var current = result[item.key];


    result[item.key] = !current ? item : {
      kks: item.key,
    };

    return result;
  }, {});

  return Object.keys(combined).map(function(key) {
    return combined[key.key];
  });
}

var result = combine(SeatWithCat);

console.log(result);
document.write(JSON.stringify(result));

This is my Code so far and it works for the first part. It removes the double keys "0BJA10GH001" but the values inside the array don't join from the duplicate key.

Each key "0BJA10GH001" has an "links" array inside it and these "links" arrays should join each other when the duplicates get merged.

All values inside the duplicate keys "0BJA10GH001" should join into one array. How can i achieve that? And one step further, how can i delete the duplicates inside an array?

Thanks a lot.

Code Now:

 var SeatWithCat = [{"0BJA10GH001" : { "links" : [{ "name" : "RI-Fliessbild: RG MFB L3 RI_002", "path" : "/C1_RI-Fliessbilder/C1.1/3/RG MFB L3 RI_002.pdf", "searchNumber" : true },{ "name" : "Katalog Sensor: TGM / siehe 0BJA10GH001 -1_5.1", "path" : "/1_Verfahrenstechnik/Teil B/1_B5/1_B5.1/01_0BJA10GH001.pdf", "searchNumber" : false },{ "name" : "Datenblatt: 0BJA10GH001", "path" : "/Datenblaetter Messstellenliste/RG MFB L3 RI_002/0BJA10GH001.pdf", "searchNumber" : false }], "aliases" : ["0BJA10GH001"] }, "0BJA10GH001" : { "links" : [{ "name" : "RI-Fliessbild: RG MFB L3 RI_002", "path" : "/C1_RI-Fliessbilder/C1.1/3/RG MFB L3 RI_002.pdf", "searchNumber" : true },{ "name" : "Komponentenbeschreibung: TGM / ---", "path" : "/1_Verfahrenstechnik/Teil B/1_B5/1_B5.1/01_0BJA10GH001.pdf", "searchNumber" : false },{ "name" : "Datenblatt: 0BJA10GH001", "path" : "/Datenblaetter Apparateliste/RG MFB L3 RI_002/0BJA10GH001.pdf", "searchNumber" : false }], "aliases" : ["0BJA10GH001"] }, "0BMC10GH001" : { "links" : [{ "name" : "RI-Fliessbild: RG MFB L3 RI_002", "path" : "/C1_RI-Fliessbilder/C1.1/3/RG MFB L3 RI_002.pdf", "searchNumber" : true },{ "name" : "Katalog Sensor: TGM / siehe 0BMC10GH001 -1_5.1", "path" : "/1_Verfahrenstechnik/Teil B/1_B5/1_B5.1/01_0BMC10GH001.pdf", "searchNumber" : false },{ "name" : "Datenblatt: 0BMC10GH001", "path" : "/Datenblaetter Messstellenliste/RG MFB L3 RI_002/0BMC10GH001.pdf", "searchNumber" : false }], "aliases" : ["0BMC10GH001"] }, "0BMC10GH001" : { "links" : [{ "name" : "RI-Fliessbild: RG MFB L3 RI_002", "path" : "/C1_RI-Fliessbilder/C1.1/3/RG MFB L3 RI_002.pdf", "searchNumber" : true },{ "name" : "Komponentenbeschreibung: TGM / ---", "path" : "/1_Verfahrenstechnik/Teil B/1_B5/1_B5.1/01_0BMC10GH001.pdf", "searchNumber" : false },{ "name" : "Datenblatt: 0BMC10GH001", "path" : "/Datenblaetter Apparateliste/RG MFB L3 RI_002/0BMC10GH001.pdf", "searchNumber" : false }], "aliases" : ["0BMC10GH001"] }, "0CFB01BB020" : { "links" : [{ "name" : "RI-Fliessbild: 90034652", "path" : "/C1_RI-Fliessbilder/C1.1/1_2/90034652.pdf", "searchNumber" : true },{ "name" : "Komponentenbeschreibung: Messer Gas / HCl in N2", "path" : "/1_Verfahrenstechnik/Teil B/1_B7/1_B7.5/01_0CFB01BB020.pdf", "searchNumber" : false },{ "name" : "Datenblatt: 0CFB01BB020", "path" : "/Datenblaetter Apparateliste/90034652/0CFB01BB020.pdf", "searchNumber" : false }], "aliases" : ["0CFB01BB020"] }, "0CFB01BB021" : { "links" : [{ "name" : "RI-Fliessbild: 90034652", "path" : "/C1_RI-Fliessbilder/C1.1/1_2/90034652.pdf", "searchNumber" : true },{ "name" : "Komponentenbeschreibung: Messer Gas / NH3 in N2", "path" : "/1_Verfahrenstechnik/Teil B/1_B7/1_B7.5/01_0CFB01BB021.pdf", "searchNumber" : false },{ "name" : "Datenblatt: 0CFB01BB021", "path" : "/Datenblaetter Apparateliste/90034652/0CFB01BB021.pdf", "searchNumber" : false }], "aliases" : ["0CFB01BB021"] }}]; function combine(arr) { var combined = arr.reduce(function(result, item) { var current = result[item.key]; result[item.key] = !current ? item : { kks: item.key, }; return result; }, {}); return Object.keys(combined).map(function(key) { return combined[key.key]; }); } var result = combine(SeatWithCat); console.log(result); 

Answer 1

Finding Duplicate Keys code:

var data = yourJson.numbers;
var keys = Object.keys(data);
var sizeOfData = keys.length;
for (var i=0; i < sizeOfData-1; i++){
 for (var j=i; j< sizeOfData-1; j++){
        if(keys[i] == keys[j+1]){
             // here i and j+1 have same key and need another algo for merge
        }
    }
}