%dw 2.0
output application/json
---
{ hello : write("world", "text/plain") }
write
DataWeave 2.2 is compatible and bundled with Mule 4.2. This version of Mule reached its End of Life on May 2, 2023, when Extended Support ended. Deployments of new applications to CloudHub that use this version of Mule are no longer allowed. Only in-place updates to applications are permitted. MuleSoft recommends that you upgrade to the latest version of Mule 4 that is in Standard Support so that your applications run with the latest fixes and security enhancements. |
write(Any, String, Object): String | Binary
Writes a value as a string or binary in a supported format.
Returns a string or binary with the serialized representation of the value
in the specified format (MIME type). This function can write to a different
format than the input. Note that the data must validate in that new format,
or an error will occur. For example, application/xml
content is not valid
within an application/json
format, but text/plain
can be valid.
Parameters
Name | Description |
---|---|
|
The value to write. The value can be of any supported data type. |
|
A supported format (or MIME type) to write. Default: |
|
Optional: Sets writer configuration properties. For writer configuration properties (and other supported MIME types), see DataWeave Output Formats and Writer Properties. |
Example
This example writes the string world
in plain text (text/plain"
). It
outputs that string as the value of a JSON object with the key hello
.
Example
This example takes JSON input and writes the payload to a CSV format that uses a
pipe (|
) separator and includes the header (matching keys in the JSON objects).
Note that if you instead use "header":false
in your script, the output will
lack the Name|Email|Id|Title
header in the output.
Source
%dw 2.0
output application/xml
---
{ "output" : write(payload, "application/csv", {"header":true, "separator" : "|"}) }