Below is my input JSON
{
"context": "context",
"meetings": [
{
"id": 123,
"subject": "subject 123",
"attendees": [
{
"type": "required",
"emailAddress": {
"name": "user1",
"address": "[email protected]"
}
},
{
"type": "required",
"emailAddress": {
"name": "!user2",
"address": "[email protected]"
}
}
]
},
{
"id": 456,
"subject": "subject 456",
"attendees": [
{
"type": "required",
"emailAddress": {
"name": "user3",
"address": "[email protected]"
}
},
{
"type": "required",
"emailAddress": {
"name": "user4",
"address": "[email protected]"
}
}
]
}
]
}
From the above JSON, First, I want to filter out the objects where name of the user starts with ! and in each resultant object, I want to add a new attribute email where email is the email of the attendee whose name starts with !. Below is my expected output:
[
{
"id": 123,
"subject": "subject 123",
"attendees": [
{
"type": "required",
"emailAddress": {
"name": "user1",
"address": "[email protected]"
}
},
{
"type": "required",
"emailAddress": {
"name": "!user2",
"address": "[email protected]"
}
}
],
"email" : "[email protected]"
}
]
I am completely new to DataWeave. can someone please help me in getting the expected output.
I tried with the below code
%dw 2.0
output application/json
---
payload.meetings filter ((item, index) -> item.attendees.emailAddress.name startsWith "!") map (
{
"id" : $.id,
"subject" : $.subject,
"attendees" : $.attendees,
"email" : ($.attendees filter $.emailAddress.name startsWith "!")[0].emailAddress.address
})
But it turned out to be below error :
You called the function 'startsWith' with these arguments:
1: Array (["user1", "user2"])
2: String ("!")
But it expects arguments of these types:
1: String
2: String
4| payload.meetings filter ((item, index) -> item.attendees.emailAddress.name startsWith "!") map (
I guess this script would help you.
Input
{
"context": "context",
"meetings": [
{
"id": 123,
"subject": "subject 123",
"attendees": [
{
"type": "required",
"emailAddress": {
"name": "user1",
"address": "[email protected]"
}
},
{
"type": "required",
"emailAddress": {
"name": "!user2",
"address": "[email protected]"
}
}
]
},
{
"id": 456,
"subject": "subject 456",
"attendees": [
{
"type": "required",
"emailAddress": {
"name": "user3",
"address": "[email protected]"
}
},
{
"type": "required",
"emailAddress": {
"name": "user4",
"address": "[email protected]"
}
}
]
}
]
}
Code
%dw 2.0
import * from dw::util::Values
import * from dw::core::Arrays
var filteredInput = (payload.meetings update "attendees"
with (if ($.emailAddress.name some ($ startsWith "!")) $
else null )) filter $.attendees != null
output application/json
---
filteredInput map {
Id: $.id,
subject: $.subject,
attendees: $.attendees map {
"type": $."type",
emailAddress: $.emailAddress
},
email: do{
var email = ($.attendees.emailAddress filter ($.name startsWith "!")).address
---
if(sizeOf(email) == 1) email[0] else email
}
}
Output
[
{
"Id": 123,
"subject": "subject 123",
"attendees": [
{
"type": "required",
"emailAddress": {
"name": "user1",
"address": "[email protected]"
}
},
{
"type": "required",
"emailAddress": {
"name": "!user2",
"address": "[email protected]"
}
}
],
"email": "[email protected]"
}
]
In case only one name has the "!" character, the email will be a string, if there is more than one match, it will be an array.