I have a String of 50 characters and I want to extract 3 smaller parts from it. I tried
%dw 1.0 %output application/json
---
payload map ((payload01 , indexOfPayload01) -> {
id: payload01.substring(0,2),
name: payload01.substring(2,14),
age: payload01.substring(14,16)
})
But that is not working. Any suggestions?
The "substring" operation on a string uses square brackets to denote position.
id: payload01[0..2]
Visit the Dataweave Operators doc for more information,
https://docs.mulesoft.com/mule-user-guide/v/3.8/dataweave-operators#substring
Related
I have a dataweave challenge which I couldn't figure out without making it complicated.
Input JSON payload
{
"Name" : "Mr.wolf",
"Age" : 26,
"Region" : "USA",
"SubRegion": "Pacific"
}
Output needed
{
"Name" : "Mr.wolf",
"Age" : 26
}
Here is a catch. I am not allowed to use the above shown output format structure in the transform message, or either remove the keys using "-" operation.
So basically, we shouldn't use the below dwl.
%dw 2.0
output application/json
---
(payload - "Region" - "SubRegion")
or
%dw 2.0
output application/json
---
{
"Name" : payload.Name,
"Age" : payload.Age
}
How can we achieve the required output by using Lambdas, Reduce, mapObject, functions or any other operation of choice, other than the restricted methods/usage shown above.
Any solution provided is much appreciated.
is this what you are looking for?
%dw 2.0
output application/json
---
payload filterObject ((value, key,index) -> (index <2 ))
Sounds like filterObject could work for you. Documentation
payload filterObject ((value, key) -> (key ~= "Name" or key ~= "Age"))
Another rendition of the same approach.
%dw 2.0
output application/json
---
payload mapObject {
(($$) : $) if (($$) ~= "Name" or ($$) ~= "Age")
}
The other rendition being:
%dw 2.0
output application/json
---
payload mapObject {
(($$) : $) if (($$$) < 2)
}
I have input data as list of maps like [{id="200" name="aaa"},{id="100",name="shbd"}].
I want to transform it to JSON like below
{
[
{
id="200",
name="aaa"
},
{
id="100",
name="shbd"
}
]
}
If the fields(keys in map) do no change, then it is simple and straightforward. Now how to transform if I dont know the key values. For eg, what if after sometime the input of map is [{"age":90},{"age","45"}]
It's always better to do specific mapping but you can go with the following , it will transform it into JSON
%dw 1.0
%output application/json
---
payload
As Anirban said, please validate the json you want to transform.
You can use below transformation for o/p specified below:
Transformation
---------------
%dw 1.0
%output application/json
---
payload map {
"id" : $.id,
"name" : $.name
}
---------------
expected output
--------------
[
{
id="200",
name="aaa"
},
{
id="100",
name="shbd"
}
]
If I have xml like so....
<Root>
<Authority>Water</Authority>
<Sanctions>
<Sanction>
<SanctionCode>11</SanctionCode>
<SanctionDesc>First Sanction</SanctionDesc>
</Sanction>
<Sanction>
<SanctionCode>11</SanctionCode>
<SanctionDesc>Second Sanction</SanctionDesc>
</Sanction>
</Sanctions>
</Root>
Using DataWeave how can I create a json array of Santions using only the SanctionDesc?
I've tried this but it's not right...
%dw 1.0
%output application/json
---
records: payload.Root map {
Authority: $.Authority,
sanctions: $.Sanctions.Sanction map [$.SanctionDesc]
}
I want my output to look like this...
{
"records": [{
"Authority": "Water",
"sanctions": ["First Sanction", "Second Sanction"]
}]
}
Try this
%dw 1.0
%output application/json
---
records: {
Authority: payload.Root.Authority,
sanctions: payload.Root.Sanctions..SanctionDesc
}
Or
%dw 1.0
%output application/json
---
records: {
Authority: payload.Root.Authority,
sanctions: payload.Root.Sanctions.*Sanction map $.SanctionDesc
}
Hope this helps.
Understading the map operator is the key when picking and choosing elements from input payload. Map operator goes through all the array elements on the left hand side and we can pick the values from on right hand side, Giving example from Mulesoft portal
%dw 1.0
%output application/json
users: ["john", "peter", "matt"] map ((firstName, position) -> position ++ ":" ++ upper firstName)
Output:
{
"users": [
"0:JOHN",
"1:PETER",
"2:MATT"
]
}
See link below:
https://docs.mulesoft.com/mule-user-guide/v/3.8/dataweave-operators#map
I currently have two JSON files with data.
The first has a list of actions by a user. However, the userID is a UID string instead of their user name.
The second is a JSON list of UID strings with their corresponding user names. I stored this JSON in a Flow Variable named UserPayload
I'd like to merge the user name into the first list so that my output has actual users names instead of the UID.
Here is what I had so far...but the userId part doesn't work since my flowVar is an list.
%dw 1.0
%output application/csv
---
payload map ((payload01, indexOfPayload01) -> {
user: payload.01.userId,
actions: payload01.action,
FileName: payload01.payload.properties.name default "N/A",
userId: flowVars.UserPayload.objectName
})
Any help would be appreciated. Thanks!
you can access the right object from the UserPayload flowVar by either filtering the content of UserPayload based on userId or creating a associative array from UserPayload.
filtering UserPayload
%dw 1.0
%output application/json
---
payload map (action, index) -> {
user: action.user,
action: action.action,
FileName: action.FileName,
userId: (flowVars.UserPayload filter $.objectId == action.user)[0].objectName
}
associative array
%dw 1.0
%output application/json
%var users = flowVars.UserPayload groupBy $.objectId
---
payload map (action, index) -> {
user: action.user,
action: action.action,
FileName: action.FileName,
userId: users[action.user][0].objectName
}
for my examples i used following sample data derived from your question.
flowVars.UserPayload
[{
"objectId": "0000-0000-0001",
"objectName": "first user"
}, {
"objectId": "0000-0000-0002",
"objectName": "second user"
}]
payload
[{
"user": "0000-0000-0001",
"action": "some crazy action",
"FileName": "some-crazy-action.mov"
}]
I get this response from the magento-connctor get-product operation:
{"product_id":"33","sku":"TEST","set":"18","type":"bundle","categories":["2","4","5","16","17","222"],"website["1","3","5","16"],"created_at":null,"updated_at":null,"type_id":null,"name":"test","description":null,"short_description":"test description","weight":null,"status":null,"url_key":null,"url_path":null,"visibility":null,"category_ids":null,"website_ids":null,"has_options":null,"gift_message_available":null,"price":null,"special_price":null,"special_from_date":null,"special_to_date":null,"tax_class_id":null,"tier_price":null,"meta_title":null,"meta_keyword":null,"meta_description":null,"custom_design":null,"custom_layout_update":null,"options_container":null,"additional_attributes":[{"key":"highlights","value":"testing Highlights"},{"key":"test_details","value":null},{"key":"frequently_asked_questions","value":"test_faq"}],"enable_googlecheckout":null}
How can I filter by attribute and remove some of the data from the payload?
You can use Dataweave (Transform Message component in Anypoint Studio), take a look to the documentation:
https://docs.mulesoft.com/mule-user-guide/v/3.7/using-dataweave-in-studio
A sample script with your data:
%dw 1.0
%output application/json
---
{
product_id: payload.product_id,
sku: payload.sku,
set: payload.set,
type: payload.type,
categories: payload.categories map ((category , indexOfCategory) -> category),
website: payload.website map ((website , indexOfWebsite) -> website),
created_at: payload.created_at
}