如何在地图中使用过滤器

问题描述

%dw 2.0 output application/json var attributeIdMapping =
 ${vault::attributeIdMapping}
--- {
     "objectTypeId": 3,"attributes": vars.requestBody mapObject (value,key) ->
        {
            "objectTypeAttributeId": (attributeIdMapping.attributes filter ($.name == key))[0].id,"objectAttributeValues": [{
             "value": value,"key": key
         }] 
        } }

attributeIdMapping：

{
    "attributes": [
        {
            "name": "accountType","id": "87"
        },{
            "name": "accountClass","id": "89"
        },{
            "name": "accountName","id": "85"
        },{
            "name": "displayName","id": "18"
        },{
            "name": "accountCategory","id": "88"
        },{
            "name": "accountNumber","id": "84"
        },{
            "name": "description","id": "86"
        },{
            "name": "accountGroup","id": "90"
        }
    ]
}

vars.requestBody：

{
    "displayName": "TestMulesoft2","description": "Test"
}

但是我的过滤器最后显示null。据我了解，密钥没有传递到地图本身下面的级别。我该如何工作？

解决方法

我将所有输入数据放入脚本中以简化复制。问题似乎是使用运算符==比较字符串，并且键类型返回空。使用似乎attempts to coerce的运算符~=返回预期结果：

%dw 2.0 
output application/json 
var attributeIdMapping =
{
    "attributes": [
        {
            "name": "accountType","id": "87"
        },{
            "name": "accountClass","id": "89"
        },{
            "name": "accountName","id": "85"
        },{
            "name": "displayName","id": "18"
        },{
            "name": "accountCategory","id": "88"
        },{
            "name": "accountNumber","id": "84"
        },{
            "name": "description","id": "86"
        },{
            "name": "accountGroup","id": "90"
        }
    ]
}
var requestBody = {
    "displayName": "TestMulesoft2","description": "Test"
}
--- {
     "objectTypeId": 3,"attributes": requestBody mapObject (value,key) ->
        {
            "objectTypeAttributeId": (attributeIdMapping.attributes filter ($.name ~= key))[0].id,"objectAttributeValues": [{
             "value": value,"key": key
         }] 
        } }

输出：

{
  "objectTypeId": 3,"attributes": {
    "objectTypeAttributeId": "18","objectAttributeValues": [
      {
        "value": "TestMulesoft2","key": "displayName"
      }
    ],"objectTypeAttributeId": "86","objectAttributeValues": [
      {
        "value": "Test","key": "description"
      }
    ]
  }
}

dataweave filter filter