Data transfer error for null nodes

Question

I did the encoding in dataweava as

%dw 1.0
%input payload application/xml
%output application/xml skipNullOn="everywhere"
---
{((payload.*Order default []) map {
Order:{
    Channel:$.@EnterpriseCode,
    Code:$.@OrderNo,
    Status:$.@Status,
    OrderLines: {
    (($.OrderLines.*OrderLine default []) map {
    OrderLine:{
        EntryNumber:"abc",
        Status:$.@Status,

        (($.OrderStatuses.*OrderStatus default []) map {

        ShipDate:$.@StatusDate

        }) 
    }})}
}

}
)
}

But its error output when assigning input as

<?xml version="1.0" encoding="UTF-8"?>
<Order EnterpriseCode="111" OrderNo="222" Status="Scheduled">
    <OrderLines>
        <OrderLine PrimeLineNo="2" Status="Shipped" OrderedQty="1000">

        </OrderLine>
    </OrderLines>
</Order>

Any suggestions here? I tried default []but did not work. When assigning null nodeit to an error. I tried the filter asfilter ($ != '')

Answer 1

XML input example :

<?xml version="1.0" encoding="UTF-8"?>
<Order EnterpriseCode="111" OrderNo="222" Status="Scheduled">
  <OrderLines>
    <OrderLine PrimeLineNo="2" Status="Shipped" OrderedQty="1000">
       <OrderStatuses>
          <OrderStatus StatusDate="statusDate"></OrderStatus>
          <OrderStatus StatusDate="statusDate"></OrderStatus>
      </OrderStatuses>
    </OrderLine>
    <OrderLine PrimeLineNo="3" Status="Shipped3" OrderedQty="10003" ></OrderLine>
  </OrderLines>
</Order>

Note. In your example, there are spaces between the tags OrderLineand the close tag, you should fix it:

<OrderLine PrimeLineNo="3" Status="Shipped3" OrderedQty="10003" ></OrderLine>

Dataweave script :

%input payload application/xml
%output application/xml skipNullOn="everywhere"
---
{
  ((payload.*Order default []) map {
    Order:{
      Channel:$.@EnterpriseCode,
      Code:$.@OrderNo,
      Status:$.@Status,

      OrderLines: {
        (($.OrderLines.*OrderLine default []) map {

          OrderLine:{
            EntryNumber:"abc",
            Status:$.@Status, 

            (($.OrderStatuses.*OrderStatus default []) map ((key,pos) -> {
                ShipDate:key.@StatusDate
            }) when $!='' otherwise {})

          }

        })
      }


    }
  })
}

, , "/", .

Answer 2

: . ( /) (/), . " ", , ShipDate , " " "".

%dw 1.0
%input payload application/xml
%output application/xml skipNullOn="everywhere"
---
{
(
    (payload.*Order default []) map {
        Order: {
            Channel:$.@EnterpriseCode,
            Code:$.@OrderNo,
            Status:$.@Status,
            OrderLines: {
                (
                    ($.OrderLines.*OrderLine default []) map ({
                        OrderLine: {
                            EntryNumber:"abc",
                            Status:$.@Status,
                            (
                                ($.OrderStatuses.*OrderStatus) map {
                                    ShipDate:$.@StatusDate
                                }
                            )
                        }
                    }) unless not $.OrderLines.*OrderLine.OrderStatuses? otherwise {
                        OrderLine: {
                            EntryNumber:"abc",
                            Status:$.@Status                                
                        }
                    }
                )
            }
        }
    }
)
}

Answer 3

:

• "SkipNullOn" % output application/xml skipNullOn = ""
• , , yourField: "null",

payload.yourField == null otherwise payload.yourField

Answer 4

Mule                    

( ) , . , , , Oubound. , Http, .

. .

https://docs.mulesoft.com/mule-user-guide/v/3.8/mule-message-structure.