Node: JSON Mapper

The JSON Mapper node allows you to ingest a String of JSON-formatted data and convert it to native types in Waltz like a Map or List based on the provided JSON's structure. JSON is a standard way to communicate blobs of data, and this node allows you to convert the plain-text JSON into usable objects in Waltz where you can query specific properties.

To reverse the effect of this node, use a JSON Stringify node.

Settings

	Expected Type	Details	Default
input	String	The plain-text JSON to be ingested.	"{ \"bestNumber\": 42, \"bestFriend\": \"Dog\", \"offices\": [\"SOJ\", \"NYC\", \"SF\"] }"

Parameters

	Type	Details
output	Map<Any>	Note: The parameter is read-only. A map constructed from the provided input.

Functions

There are no functions exposed by this node.

Example Usage

JSON and how is behaves is generally well documented. Given the following JSON data…

{
    "bestNumber": 42,
    "bestFriend": "Dog",
    "offices": [
        "SOJ",
        "NYC",
        "SF"
    ]
}

…we can expect Waltz to generate the following Map of data…

Key	Value	Value Type
bestNumber	42	Number
bestFriend	Dog	String
offices	SOJ NYC SF	List<String>