Json Mule 4.2-DWL 2.0-groupBy结果后需要删除groupBy

在DWL2.0中执行groupBy操作后，我需要从实际数据中删除groupBy字段及其值

比如说

我有json数组的有效负载，如：

[
  {
    "empId": 1,
    "empName": "James",
    "deptName": "Sales"
  },
  {
    "empId": 2,
    "empName": "ABC",
    "deptName": "Marketing"
  },
  {
    "empId": 3,
    "empName": "BCD",
    "deptName": "Account"
  },
  {
    "empId": 4,
    "empName": "EFG",
    "deptName": "Sales"
  },
  {
    "empId": 5,
    "empName": "HIJK",
    "deptName": "Account"
  },
  {
    "empId": 6,
    "empName": "LMN",
    "deptName": "Sales"
  },
  {
    "empId": 7,
    "empName": "OPQR",
    "deptName": "Marketing"
  }
]

在此添加的转换上执行groupBy-->

但当您查看结果时，实际数据json中不再需要depentName标记。我想从数据json中删除此元素，并希望得到最终结果，如-->

---

有人能帮我解决这个问题吗？

您可以使用mapObject函数重新映射groupBy的结果，然后映射值组结果并删除每个对象中的字段

output application/json
---                 
payload groupBy ((item) -> item.deptName) 
        mapObject ((value, key, index) -> 
            {
                (key): value map ((item, index) -> item - "deptName")
            })

{
  "Sales": [
    {
      "empId": 1,
      "empName": "James",
      "deptName": "Sales"
    },
    {
      "empId": 4,
      "empName": "EFG",
      "deptName": "Sales"
    },
    {
      "empId": 6,
      "empName": "LMN",
      "deptName": "Sales"
    }
  ],
  "Marketing": [
    {
      "empId": 2,
      "empName": "ABC",
      "deptName": "Marketing"
    },
    {
      "empId": 7,
      "empName": "OPQR",
      "deptName": "Marketing"
    }
  ],
  "Account": [
    {
      "empId": 3,
      "empName": "BCD",
      "deptName": "Account"
    },
    {
      "empId": 5,
      "empName": "HIJK",
      "deptName": "Account"
    }
  ]
}

{
  "Sales": [
    {
      "empId": 1,
      "empName": "James"
    },
    {
      "empId": 4,
      "empName": "EFG"
    },
    {
      "empId": 6,
      "empName": "LMN"
    }
  ],
  "Marketing": [
    {
      "empId": 2,
      "empName": "ABC"
    },
    {
      "empId": 7,
      "empName": "OPQR"
    }
  ],
  "Account": [
    {
      "empId": 3,
      "empName": "BCD"
    },
    {
      "empId": 5,
      "empName": "HIJK"
    }
  ]
} 

output application/json
---                 
payload groupBy ((item) -> item.deptName) 
        mapObject ((value, key, index) -> 
            {
                (key): value map ((item, index) -> item - "deptName")
            })