[英]JOLT Transformation: Change field value based on the value in a nested element
I have a service that receives a JSON and needs to transform it to a different structure before sending to a third party API. Our team is using JOLT for transformations in the application.我有一个接收 JSON 的服务,需要在发送给第三方 API 之前将其转换为不同的结构。我们的团队在应用程序中使用JOLT进行转换。 I have detailed the current scenario below along with the new ask.我在下面详细说明了当前情况以及新问题。 The issue with the new ask is that the elements/fields in the resultant JSON have to be derived based on the value of a nested element.新问题的问题是结果 JSON 中的元素/字段必须基于嵌套元素的值派生。 I have spent several hours trying different operations (mainly shift and modify-overwrite-beta) but have not been able to find a solution.我花了几个小时尝试不同的操作(主要是 shift 和 modify-overwrite-beta),但未能找到解决方案。
Source JSON来源 JSON
{
"id": "wert23sd-0891-4fcd-ae31-380c0ef61198",
"topic": "cartsaleOmni/sale",
"subject": "EventTypeEvent.Cart.Sale",
"data": {
"payload": {
"content": {
"cartEvent": {
"eventOccurrenceTime": "2023-01-12T03:09:42.254Z",
"cartEventId": "fe9c22ca-dc38-4bcd-a220-c7425b9bed7e",
"eventTriggerTime": "2023-01-12T02:38:43.609Z",
"eventName": "Sale Cart",
"cart": {
"cartId": "be8b22ba-dc38-4bcd-a120-c7425b9bed7e",
"cartLineItems": [
{
"itemId": "44e610ab-c209-4232-8bb4-51f7b9b13a75",
"cartLineItemId": "fe9c22ca-23ad-46e0-8629-a6593597f183",
"startsAt": "2023-01-16",
"endsAt": "2023-01-19",
"numberOfUnits": 2,
"clientChannel": "web",
"clientSource": "mgmri",
"itemSelectionDetails": {
"extSelectionDetails": {
"isP1Customer": true
}
},
"eventType": "saleEvent.44e610ab-c209-4232-8bb4-51f7b9b13a75"
}
]
}
}
}
}
},
"customerId": "CORP11A38249"
}
Current JOLT Spec当前 JOLT 规范
[
{
"operation": "modify-overwrite-beta",
"spec": {
"data": {
"payload": {
"content": {
"cartEvent": {
"cart": {
"cartLineItems": {
"*": {
"eventType": "=concat('carteSaleEvent.', @(1,itemId))"
}
}
}
}
}
}
}
}
},
{
"operation": "shift",
"spec": {
"customerId": "requests[0].payload.context.CustomerID",
"data": {
"payload": {
"content": {
"cartEvent": {
"cart": {
"cartId": "referenceNumber",
"cartLineItems": {
"*": {
"eventType": "requests[0].eventType",
"$": "retryConfigRequestMap.@eventType.maxAttempts",
"itemId": "requests[0].payload.context.itemId",
"numberOfUnits": "requests[0].payload.context.noOfUnits",
"startsAt": "requests[0].payload.context.earliestDate",
"endsAt": "requests[0].payload.context.latestDate"
}
}
}
}
}
}
}
}
},
{
"operation": "modify-overwrite-beta",
"spec": {
"retryConfigRequestMap": {
"*": {
"altEventName": "cartSaleComplete",
"enabled": true
}
}
}
},
{
"operation": "default",
"spec": {
"eventType": "Cart.Sale.Complete"
}
}
]
Current State Output JSON当前 State Output JSON
{
"eventType": "Cart.Sale.Complete",
"referenceNumber": "be8b22ba-dc38-4bcd-a120-c7425b9bed7e",
"requests": [
{
"eventType": "carteSaleEvent.44e610ab-c209-4232-8bb4-51f7b9b13a75",
"payload": {
"context": {
"CustomerID": "CORP11A38249",
"earliestDate": "2023-01-16",
"itemId": "44e610ab-c209-4232-8bb4-51f7b9b13a75",
"latestDate": "2023-01-19",
"noOfUnits": 2
}
}
}
],
"retryConfigRequestMap": {
"carteSaleEvent.44e610ab-c209-4232-8bb4-51f7b9b13a75": {
"altEventName": "cartSaleComplete",
"enabled": true,
"maxAttempts": "0"
}
}
}
Now I am required to change eventType
to cartSaleEvent.PREMIUM
in elements in requests
array and also in the retryConfigRequestMap
if the value of ...itemSelectionDetails.extSelectionDetails.isP1Customer
is true
.现在,如果...itemSelectionDetails.extSelectionDetails.isP1Customer
retryConfigRequestMap
值为true
,我需要将requests
数组中的元素以及cartSaleEvent.PREMIUM
中的eventType
更改为 cartSaleEvent.PREMIUM 。 and remain the same if that field is set to 'false' or is not present.如果该字段设置为“false”或不存在,则保持不变。 So the desired JSON should look like below:所以所需的 JSON 应该如下所示:
{
"eventType": "Cart.Sale.Complete",
"referenceNumber": "be8b22ba-dc38-4bcd-a120-c7425b9bed7e",
"requests": [
{
"eventType": "carteSaleEvent.PREMIUM",
"payload": {
"context": {
"CustomerID": "CORP11A38249",
"earliestDate": "2023-01-16",
"itemId": "44e610ab-c209-4232-8bb4-51f7b9b13a75",
"latestDate": "2023-01-19",
"noOfUnits": 2
}
}
}
],
"retryConfigRequestMap": {
"carteSaleEvent.PREMIUM": {
"altEventName": "cartSaleComplete",
"enabled": true,
"maxAttempts": "0"
}
}
}
Apologies for the lengthy question.很抱歉这个冗长的问题。 I read through the documentation and also the below links but could not device a working solution.我通读了文档和以下链接,但无法找到可行的解决方案。 Any help/pointers will be greatly appreciated.任何帮助/指针将不胜感激。
You can rearrange the last shift transformation spec by using a conditional logic through matching "@(0,itemSelectionDetails.extSelectionDetails.isP1Customer)"
identifier with true
such as您可以通过将"@(0,itemSelectionDetails.extSelectionDetails.isP1Customer)"
标识符与true
匹配,使用条件逻辑重新排列最后一个班次转换规范,例如
{
"operation": "shift",
"spec": {
"customerId": "requests[0].payload.context.CustomerID",
"data": {
"payload": {
"content": {
"cartEvent": {
"cart": {
"cartId": "referenceNumber",
"cartLineItems": {
"*": {
"@(0,itemSelectionDetails.extSelectionDetails.isP1Customer)": {
"true": {
"#carteSaleEvent\\.PREMIUM": "requests[0].eventType",
"$2": "retryConfigRequestMap.carteSaleEvent\\.PREMIUM.maxAttempts"
},
"*": {
"@(2,eventType)": "requests[0].eventType",
"$2": "retryConfigRequestMap.@(3,eventType).maxAttempts"
}
},
"itemId": "requests[0].payload.context.itemId",
"numberOfUnits": "requests[0].payload.context.noOfUnits",
"startsAt": "requests[0].payload.context.earliestDate",
"endsAt": "requests[0].payload.context.latestDate"
}
}
}
}
}
}
}
}
}
where we've gone two levels deeper by using $2
, "@(2,eventType)"
or "@(3,eventType)"
( which needs to traverse one more level as stated on the Right-hand-side )我们通过使用$2
、 "@(2,eventType)"
或"@(3,eventType)"
深入两层(如右手边所述,需要再遍历一层)
Btw, if the order of the attributes matter, then you can add a sort transformation spec to the end just before closing square bracket ]
such as顺便说一句,如果属性的顺序很重要,那么您可以在结束方括号]
之前添加一个排序转换规范,例如
,
{
"operation": "sort"
}
you can use this spec:你可以使用这个规范:
I moved all of your operations to one shift
jolt spec, and create a temp
variable with this value:我将您的所有操作移至一个shift
jolt 规范,并使用此值创建一个temp
变量:
If isP1Customer
is true
: carteSaleEvent.PREMIUM
.如果isP1Customer
为true
: carteSaleEvent.PREMIUM
。
If isP1Customer
is false
: eventType
value.如果isP1Customer
为false
: eventType
值。
And finally, you can use the temp
value.最后,您可以使用temp
值。
[
{
"operation": "modify-overwrite-beta",
"spec": {
"*": {
"*": {
"*": {
"*": {
"*": {
"*": {
"*": {
"eventType": "=concat('carteSaleEvent.', @(1,itemId))"
}
}
}
}
}
}
}
}
},
{
"operation": "shift",
"spec": {
"customerId": "requests[0].payload.context.CustomerID",
"#Cart.Sale.Complete": "eventType",
"data": {
"*": {
"*": {
"*": {
"cart": {
"cartId": "referenceNumber",
"cartLineItems": {
"*": {
"eventType": "temp",
"#test": "requests[&1].test",
"$": "retryConfigRequestMap.@eventType.maxAttempts",
"#cartSaleComplete": "retryConfigRequestMap.@eventType.altEventName",
"#true": "retryConfigRequestMap.@eventType.enabled",
"itemId": "requests[&1].payload.context.&",
"numberOfUnits": "requests[&1].payload.context.noOfUnits",
"startsAt": "requests[&1].payload.context.earliestDate",
"endsAt": "requests[&1].payload.context.latestDate",
"itemSelectionDetails": {
"*": {
"*": {
"true": {
"#carteSaleEvent.PREMIUM": "temp"
}
}
}
}
}
}
}
}
}
}
}
}
},
{
"operation": "modify-overwrite-beta",
"spec": {
"temp": "=lastElement"
}
},
{
"operation": "shift",
"spec": {
"eventType": "&",
"requests": {
"*": {
"*": "&2[&1].&",
"test": {
"@(4,temp)": "&3[&2].eventType"
}
}
},
"retryConfigRequestMap": {
"*": "&1.@(2,temp)"
}
}
}
]
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