[英]How to add Error to payload for several key's value is null in payload in dataweave?
I have a payload where I need to check for a few specific validation and if validation doesnt succeed I want to add an error to a new array in the payload.我有一个有效负载,我需要检查一些特定的验证,如果验证不成功,我想向有效负载中的新数组添加一个错误。
Input:输入:
[
{
"order": "123",
"product": "",
"invoice": "Lock"
},
{
"order": "123",
"product": "456",
"invoice": ""
}
]
In above input I need to check if Invoice == 'Locked' and Product,= null.在上面的输入中,我需要检查 Invoice == 'Locked' 和 Product,= null。 order needs to be checked against a different json array to see if that value exist but I just want to get an idea on invoice and product o how to get different validation and add errors to error array..需要针对不同的 json 数组检查订单,以查看该值是否存在,但我只想了解发票和产品 o 如何获得不同的验证并将错误添加到错误数组。
Expected output should be:预期的 output 应该是:
[
{
"order": "123",
"product": "",
"invoice": "Lock",
"Errors" : {
"Error" : true,
"Error Message" : "Invoice is not "Locked", product is null"
}
},
{
"order": "123",
"product": "456",
"invoice": "123",
"Errors" : {
"Error" : false,
"Error Message" : ""
}
}
]
I want to be able to check for different validations for different keys.我希望能够检查不同键的不同验证。
I am able to achieve below output, where I am using a different function for each individual key and adding error for each keys but it is becoming very challenging to filter out which error has occurred?我能够实现低于 output,其中我为每个单独的键使用不同的 function 并为每个键添加错误,但是过滤出哪个错误变得非常具有挑战性?
[
{
"order": "123",
"product": "",
"invoice": "",
"Errors": {
"Order ": "Order is NULL,",
"Product": "",
"Invoice": ""
}
},
{
"order": "123",
"product": "456",
"invoice": "123",
"Errors": {
"Order ": "",
"Product": "",
"Invoice": ""
}
}
]
Even if I can figure out from above output which one of the objects has errors in it, that will server the purpose.即使我可以从上面 output 中找出其中一个对象有错误,这将达到目的。
How do I get the desired output shown above with Errors
array with {Error, error message}
?如何使用带有{Error, error message}
的Errors
数组获得所需的 output ?
You can try to use the following DataWeave expression:您可以尝试使用以下 DataWeave 表达式:
%dw 2.0
output application/json
fun addMessage(condition, message) = if (condition) message else null
fun validate(item) =
[]
<< addMessage(isEmpty(item.order), "Order is null or empty")
<< addMessage(isEmpty(item.product), "Product is null or empty")
<< addMessage(isEmpty(item.invoice), "Invoice is null or empty")
<< addMessage(item.invoice ~= "Lock", "Invoice is locked")
// keep adding other validation here
fun addError(messages) =
{
"Errors" : {
"Error": !isEmpty(messages),
"Error Message": ((messages filter (item) -> (item != null)) as Array) joinBy ", "
}
}
---
payload map (item, index) ->
item
++ addError(validate(item))
It will produce the following output based on the provided example payload:它将根据提供的示例有效负载生成以下 output:
[
{
"order": "123",
"product": "",
"invoice": "Lock",
"Errors": {
"Error": true,
"Error Message": "Product is null or empty, Invoice is locked"
}
},
{
"order": "123",
"product": "456",
"invoice": "",
"Errors": {
"Error": true,
"Error Message": "Invoice is null or empty"
}
}
]
You can try with this script -您可以尝试使用此脚本 -
%dw 2.0 output application/json import someEntry from dw::core::Objects fun maperror(item) = do { var error = item someEntry (value, key) -> isEmpty(value) --- { "Error": error, "Error Message": if (error) keysOf((item filterObject ((value, key, index) -> isEmpty(value)))) map ($ ++ " is null") joinBy ", " else "" } } --- payload map { ($), "Errors": maperror($) }
It will produce output like below -它将产生如下所示的 output -
[ { "order": "123", "product": "456", "invoice": "", "Errors": { "Error": true, "Error Message": "invoice is null" } }, { "order": "123", "product": "", "invoice": "", "Errors": { "Error": true, "Error Message": "product is null, invoice is null" } } ]
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.