Mule Dataweave对JSON有效负载进行空检查和数组空检查

Question

需要使用过滤器或任何其他逻辑检查Dataweave中的null和空数组。

首先检查parentId是否为null，我们需要跳过特定的JSON。如果parentId不为null，则需要检查mobileContacts或emailContacts 拥有值数组。如果mobileContacts和emailContacts有空List，我们需要跳过特定的JSON值。如果任何人拥有我们处理记录所需的价值。

输入JSON：

{
  "name": "XYZ",
  "age": 23, 
  "results": [
    {
      "parentId": "12345",      
      "notes": "proceed",
      "mobileContacts": [
        {
          "relationId": "12345",
          "callId": "3456213"
        },
        {
          "relationId": "12345",
          "callId": "12345"
        }
      ],
      "emailContacts": [ ],
      "initial": true
    },
     {
      "parentId": "435638",      
      "notes": "proceed",
      "mobileContacts": [ ],
      "emailContacts": [ ],
      "initial": true
    },
     {
      "parentId": null,      
      "notes": "proceed",
      "mobileContacts": [
        {
          "relationId": "12345",
          "callId": "3456213"
        },
        {
          "relationId": "12345",
          "callId": "12345"
        }
      ],
      "emailContacts": [ ],
      "initial": true
    }
  ]
}

需要以下输出：

{
  "name": "XYZ",
  "age": 23, 
  "results": [
    {
      "parentId": "12345",      
      "notes": "proceed",
      "mobileContacts": [
        {
          "relationId": "12345",
          "callId": "3456213"
        },
        {
          "relationId": null,
          "callId": null
        }
      ],     
      "initial": true
    }
  ]
}

Answer 1

这个怎么样，

%dw 1.0
%output application/json
---
{
    name: payload.name,
    age: payload.age, 
    results: payload.results filter ($.parentId != null and ((sizeOf $.mobileContacts) > 0 or  (sizeOf $.emailContacts) > 0))
}