过滤数组中的对象并保留Mule4中的其他字段

Question

我在请求负载中有 2 个对象需要根据 Mule4 中的字段值进行过滤。请求 json:

{
"Fruits": {
 "Types": [
{
 "Field1": "value1",
 "Field2": "value2",
 "Color" : {
  "Types": [
   {
    "Order": "test",
    "Cost": "22"
    },
    {
    "Order": "test1",
    "Cost": ""
    }
    ]
    }
    }
    ]
    },
    "Color" : {
  "Types": [
   {
    "Order": "test",
    "Cost": "22"
    },
    {
    "Order": "test1",
    "Cost": ""
    }
    ]
    }
    }

在上面的有效负载中，所有字段都是必需的，但对于 Color.Types 数组，我们只需要从上面的两个 Color 对象中过滤 cost != null 的对象。

预期输出json：

{
    "Fruits": {
     "Types": [
    {
     "Field1": "value1",
     "Field2": "value2",
     "Color" : {
      "Types": [
       {
        "Order": "test123",
        "Cost": "44"
        }
        ]
        }
        }
        ]
        },
        "Color" : {
      "Types": [
       {
        "Order": "test",
        "Cost": "22"
        }
        ]
        }
        }

Answer 1

您的输入和预期输出不同。

注意 -> ""（长度为0）和null（没有分配值）有区别

DW

%dw 2.0
output application/json
import * from dw::util::Values
---
payload update ["Color","Types"] with ($ filter ($.Cost != null and $.Cost != "")) update ["Fruits","Types","Color","Types"] with ($ filter ($.Cost != null and $.Cost != ""))

输出

{
  "Fruits": {
    "Types": [
      {
        "Field1": "value1",
        "Field2": "value2",
        "Color": {
          "Types": [
            {
              "Order": "test",
              "Cost": "22"
            }
          ]
        }
      }
    ]
  },
  "Color": {
    "Types": [
      {
        "Order": "test",
        "Cost": "22"
      }
    ]
  }
}

过滤数组中的对象并保留Mule4中的其他字段

Filter object in an array and retain other fields in Mule4

filter

mapping

mule

dataweave