CODEWITHSUNDEEP
dataweavemulesoft
Pankaj Mishra
Pankaj Mishra

Reputation: 59

Mulesoft Dataweave expression throwing an error

Check image to view mule4 screen I am using mule4 to build integration flow, Dataweave expression for data transformation and postman to test HTTP call, I am trying to get 0011x000014VegoAAC from XML below in Dataweave and insert into Salesforce record Everything was working fine until I added these two lines(they are suppose to extract 0011x000014VegoAAC from XML)

PBSI__Customer__c: (payload.ns0#order.ns0#"custom-attributes".*ns0#"custom-attribute") 
    filter (item) -> (item.@"attribute-id" == "sscAccountid")

XML

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<order order-no="00000907" xmlns="http://www.demandware.com/xml/impex/order/2006-10-31">
    <order-date>2020-07-10T08:57:05.076Z</order-date>
    <current-order-no>00000907</current-order-no>
    <product-lineitems>
        <product-lineitem>
            <net-price>54.17</net-price>
        </product-lineitem>
    </product-lineitems>
    <custom-attributes>
        <custom-attribute attribute-id="Adyen_pspReference">852594371442812G</custom-attribute>
        <custom-attribute attribute-id="Adyen_value">7099</custom-attribute>
        <custom-attribute attribute-id="sscAccountid">0011x000014VegoAAC</custom-attribute>
    </custom-attributes>
</order>

Full Dataweave code

 %dw 2.0
    output application/java
    ns ns0 http://www.demandware.com/xml/impex/order/2006-10-31
    ---
    [{  
        Ascent4Ecomm__Ecomm_Order_ID__c: payload.ns0#order.ns0#"original-order-no",
        Ascent4Ecomm__Ecomm_Order_Name__c: payload.ns0#order.ns0#"original-order-no",
        Ascent4Ecomm__Ecomm_Order_Number__c: payload.ns0#order.ns0#"original-order-no", 
        attributes: {
            "type": "PBSI__PBSI_Sales_Order__c",
            "referenceId": "SO"
        },
        PBSI__Sales_Order_Lines__r: {
            records: payload.ns0#order.ns0#"product-lineitems".*ns0#"product-lineitem" map ( e , empindex ) -> {
                "attributes": {
                    "type": "PBSI__PBSI_Sales_Order_Line__c",
                    "referenceId": e.ns0#"product-id"
                },
                "PBSI__Item__c": e.ns0#"custom-attributes".ns0#"custom-attribute",
                "PBSI__ItemDescription__c": e.ns0#"product-name"
            }
        },
***These two lines throws error:***
        PBSI__Customer__c: (payload.ns0#order.ns0#"custom-attributes".*ns0#"custom-attribute")
            filter (item) -> (item.@"attribute-id" == "sscAccountid")
    }]

error

:Invalid status code: 400, response body: [{"message":"Cannot deserialize instance of reference from START_ARRAY value [line:1, column:423]","errorCode":"JSON_PARSER_ERROR"}]

Everything was working fine before those two lines[Mule4 screen][2]

I am using postman to make HTTP call to that flow

Upvotes: 0

Views: 530

Answers (1)

aled
aled

Reputation: 25872

That is an HTTP 400 error. The description indicates that some application is trying to parse a JSON input. It is unclear the relationship with your DataWeave transformation, however it is outputting Java, not JSON. Probably you need to change the output to application/JSON instead.

UPDATE: Based on the comments, you from PBSI__Customer__c to return a single string with some id, which is returning a list from the DataWeave expression in the question, you need to get the first element. You can get that with the index selector [0], though I don't know if it is guaranteed that the payload will always have a single element.

PBSI__Customer__c: ((payload.ns0#order.ns0#"custom-attributes".*ns0#"custom-attribute")
        filter (item) -> (item.@"attribute-id" == "sscAccountid")) [0]

Upvotes: 1

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