使用dataweave 2.0在mule 4中使用order by进行转换

我必须按照distanceInKm的升序制作有效负载阵列。 这是有效载荷：

 [{
   "id": 1111,
   "accountNumber": 17694838,   
   "pickup": {
    "time": 1580637133000,
    "distanceInKm": 4.3
   }
 },{
  "id": 2222,
  "accountNumber": 17694838,
  "pickup": {
    "time": 1580637133000,
    "distanceInKm": 2.0
  }
},{
  "id": 3333,
  "accountNumber": 17694838,    
  "pickup": {
    "time": 1580637133000,
    "distanceInKm": 4.3
  }
  },{
  "id": 4444,
  "accountNumber": 17694838,
  "pickup": {
    "time": 1580637133000,
    "distanceInKm": 2.0
   }}]

转变：

  %dw 2.0
  output application/json 
   ---
 payload map (payload01, index) -> {
id: payload01.id,
Account: payload01.accountNumber,
pickup: {
    time: payload01.pickup.time,
    distance: payload01.pickup.distanceInKm
  }
} orderBy (payload01.pickup.distanceInKm)

我正在进行必要的转换，之后我将应用orderBy，但这不起作用。我可以做哪些更改以升序距离为单位？

您只需将“地图”括在一个组中，以确保您所订购的已经是结果数组。见下文

(payload map (payload01, index) -> {
    id: payload01.id,
    Account: payload01.accountNumber,
    pickup: {
        time: payload01.pickup.time,
        distance: payload01.pickup.distanceInKm
    }
}) orderBy $.pickup.distance

这将导致按distanceInKm按升序排列的数组。如果您想按降序排列，则可以使用

-$.pickup.distance

作为标准