XML Attribute Selector (.@myKey)
Using .@ without the key name returns an object containing the attributes as key-value pairs.
November 21, 2021 | Dataweave, Mule 4, Mulesoft | No comments
Range selector (anIndex to anotherIndex)
If you need multiple sequential values from an Array, DataWeave allows you to select a range of values with the range selector ([n to m]).
November 21, 2021 | Dataweave, Mule 4, Mulesoft | No comments
Index Selector ([])
The index selector returns the element at the specified position. It can be applied over an array, object, or string.
November 21, 2021 | Dataweave, Mule 4, Mulesoft | No comments
Key-Value Pair Selector (.&myKey)
The & selector acts on arrays and objects. & retrieves both the keys and values of all matching keys pairs in the current context. These are returned as an object, containing the retrieved keys and values.
November 21, 2021 | Dataweave, Mule 4, Mulesoft | No comments
Descendants Selector (..)
The descendants selector (..) is the perfect tool to use when you need the values for a certain key no matter where they appear in a piece of data.
November 21, 2021 | Dataweave, Mule 4, Mulesoft | No comments
Multi-Value Selector (.*)
The multi-value selector (.*) returns an Array containing any value that matches the key. The values returned are dependent on the key that’s passed in. The multi-value selector works on both Arrays and Objects, but in different ways.
November 21, 2021 | Dataweave, Mule 4, Mulesoft | No comments
Single-Value Selector
The single-value selector (.) allows you to lookup Object values by their key.
November 21, 2021 | Dataweave, Mule 4, Mulesoft | No comments
Reading Data
reading data is just as important, and the features available to do so are just as robust.
November 21, 2021 | Dataweave, Mule 4, Mulesoft | No comments
Creating Data
As you’d expect, the last two are actually composite types, their contents also have type definitions:
November 20, 2021 | Dataweave, Mule 4, Mulesoft | No comments
SCRIPT ANATOMY
Notice in the script that there are three lines, a line with three dashes, then one more line. The first three lines of the script contain directives. The first directive, which is in every DataWeave file, defines which version the script is using.
November 19, 2021 | Dataweave, Mule 4, Mulesoft | No comments