使用 jsonata 按键对 object 进行分组

Question

I want to group and sum my following input data.

{"users": [
  {
    "ADMIN": [
      {
        "ADMIN_03": 46,
        "ADMIN_01": 2
      }
    ],
    "CUSTOMER": [
      {
        "CUSTOMER_01": 1
      }
    ]
  },
  {
    "ADMIN": [
      {
        "ADMIN_03": 35
      }
    ]
  },
  {
    "ADMIN": [
      {
        "ADMIN_01": 12
      }
    ],
    "CUSTOMER": [
      {
        "CUSTOMER_03": 2
      }
    ]
  }
]}

The output should be grouped by the keys like "ADMIN" and the inner key/value pairs should be grouped and summed up.

{    "users": [
      {
        "ADMIN":[
          {
             "ADMIN_01": 14
             "ADMIN_03": 81,
          },
        "CUSTOMER":[
          {
             "CUSTOMER_01": 1,
             "CUSTOMER_03": 2
          }
    ]
}

Any ideas how to do this with JSONATA?

Answer 1

You can make use of reduce and nested foreach by taking Object.entries :

 const users= [ { "ADMIN": [ { "ADMIN_03": 46, "ADMIN_01": 2 } ], "CUSTOMER": [ { "CUSTOMER_01": 1 } ] }, { "ADMIN": [ { "ADMIN_03": 35 } ] }, { "ADMIN": [ { "ADMIN_01": 12 } ], "CUSTOMER": [ { "CUSTOMER_03": 2 } ] }]; const result = users.reduce((a,o)=>{ Object.entries(o).forEach(([key, value])=>{ value.forEach(v=>{ Object.entries(v).forEach(([name, count])=>{ (a[key]??={})[name]??= 0; a[key][name]+=count; }); }); }); return a; },{}); console.log(result);

Answer 2

It seems that you need this result at the end.

    data = {
  users: [
    {
      ADMIN: [
        {
          ADMIN_03: 46,
          ADMIN_01: 2,
        },
      ],
      CUSTOMER: [
        {
          CUSTOMER_01: 1,
        },
      ],
    },
    {
      ADMIN: [
        {
          ADMIN_03: 35,
        },
      ],
    },
    {
      ADMIN: [
        {
          ADMIN_01: 12,
        },
      ],
      CUSTOMER: [
        {
          CUSTOMER_03: 2,
        },
      ],
    },
  ],
};

function summerize(users) {
  let result = { users: {} };
  for (let i = 0; i < users.length; i++) {
    const user = users[i];

    for (const [username, userValue] of Object.entries(user)) {
      if (typeof result.users[username] === "undefined")
        result.users[username] = {};
      for (let j = 0; j < userValue.length; j++) {
        const item = userValue[j];
        for (const [key, value] of Object.entries(item)) {
          if (typeof result.users[username][key] === "undefined") {
            result.users[username][key] = 0;
          }
          result.users[username][key] += value;
        }
      }
    }
  }
  return result;
}

The result is

{
  "users": {
    "ADMIN": { "ADMIN_03": 81, "ADMIN_01": 14 },
    "CUSTOMER": { "CUSTOMER_01": 1, "CUSTOMER_03": 2 }
  }
}