Mule:Dataweave Iteration not working - mule

Question

I am trying to take output from Salesforce & transform it to a json. here is my code:
%dw 1.0
%output application/json
payload map {
headerandlines:{ id : $.Id,
agreementLineID : $.LineItems__r.Id,
netPrice : $.LineItems__r.Price__c,
volume : $.Volume__c,
name : $.Name,
StartDate : $.Start_Date__c,
EndDate : $.End_Date__c,
poField : $.PO_Field__c,
ConsoleNumber : $.Console_Number__c,
Term : $.Term__c,
ownerID : $.OwnerId,
Unit : $.Unit__c,
siteNumber : $.Site_Num__c,
customerNumber : $.Customer_Num__c
}
}
input payload looks like this.. it is a collection of objects. Somehow after the transformation only the first object is sent & rest is clobbered.
[
{
"id": "DA0YAAW",
"LineID": [
"jGEAU",
"jBEAU",
"j6EAE"
],
"Price": [
"50000.0",
"12000.0",
"45000.0"
],
"netPrice": null,
"volume": null,
"name": " Test 2.24",
"StartDate": "2017-02-17",
"EndDate": "2018-02-17",
"poField": "123456",
"ConsoleNumber": "8888888",
"PaymentTerm": "thirty (30)",
"ownerID": “abcd”,
"OperatingUnit": " International Company",
"siteNumber": null,
"customerNumber": null
},
{
"id": "a37n0000000DAMAAA4",
"LineID": [
"JunEAE",
"JuiEAE",
"KdMEAU",
"JuYEAU"
],
"Price": [
"5000.0",
"8000.0",
"5000.0",
"5000.0"
],
"netPrice": null,
"volume": null,
"name": " Test 3.6",
"StartDate": "2017-03-06",
"EndDate": "2018-03-16",
"poField": "12345",
"ConsoleNumber": "123456-",
"PaymentTerm": "30 NET",
"ownerID": “dfgh”,
"OperatingUnit": ", inc.",
"siteNumber": null,
"customerNumber": null
},
….
]
When I call this code from the browser (using API testing) I get the complete payload with multiple objects. When I call this from another API I get only one 1 object indicating it is not looping through. I can confirm that the payload has multiple objects . Is there anything I am missing in terms of looping through this code to extract multiple objects? I assume that '$' notation is good enough for iteration.

Answer 1

#insaneyogi, your input is either incorrect or your dataweave is incorrect.
Here in the input you have specified id in the small. but in dataweave, it is mentioned in capital.

Answer 2

I think the problem here is with your Lineitem and Price type elements. They are collection within and element. In your data mapping $. will take care of the outer object. However, i think the mapping like LineItems__r.Price__c is not correct. It should have proper index , probably LineItems__r.Price__c[0]. Please try that and it should work. First change the input with single element for price or line-item and test.

Answer 3

It looks like the agreementLineID and netPrice are arrays and you need to loop through them with a map operator within the bigger outer map to get all the line items. That should work.