Format According to Type
This DataWeave example applies changes to the keys in an object, depending on
the type of their corresponding values. When the element is an array, the keys
are pluralized. When it’s a number, they are set to camel case. In any other
case they are capitalized.
Before you begin, note that 2.x versions of DataWeave are used by Mule 4 apps. For DataWeave in Mule 3 apps, refer to DataWeave version 1.2 examples. For other DataWeave versions, you can use the version selector in the DataWeave table of contents.
The example uses:
-
mapObjectto go through each element in the payload. -
ifto check that an element is of a given type. -
camelizefrom the String library to apply a camel case format to strings (all words stringed together, using upper case letters to mark separations). -
capitalizefrom the String library to apply a capitalized format to strings (all words are separate and start with an upper case letter). -
pluralizefrom the String library to change singular words into plural.
%dw 2.0
import * from dw::core::Strings
output application/json
---
payload mapObject ((elementValue, elementKey) -> {
(if (elementValue is Array)
pluralize(elementKey)
else if(elementValue is Number)
camelize(elementKey)
else capitalize(elementKey)) : elementValue
}){
"VersionNo": 1.6,
"StoreOfOrigin": "SFO",
"Item":
[
{
"ID":"34546315801",
"DeliveryMethod":"AIR",
"Quantity":8
},
{
"ID":"56722087289",
"Boxes": 3,
"DeliveryMethod":"GROUND",
"Quantity":2
}
]
}{
"versionNo": 1.6,
"Store Of Origin": "SFO",
"Items": [
{
"ID": "34546315801",
"DeliveryMethod": "AIR",
"Quantity": 8
},
{
"ID": "56722087289",
"Boxes": 3,
"DeliveryMethod": "GROUND",
"Quantity": 2
}
]
}