#match

Matches a value against cases from top to bottom and returns the value of the first one that matches.

"#match(source as @variable) into 'name'": [ { "case": "result" }, ... ]

Category Pattern matchingValid in Property name

Parameters

Name	Type	Description
source	path | value	The value to match.
@variable	variable	Bound to the value for use in cases.

Returns

any

Examples

Match an array shape

source.json

{
    "somePath": [ 1, 2 ]
}

transformer.json

{
    "#match($.somePath as @x) into 'result'": [
        { "#is([])": "'Found an empty array'" },
        { "#is([_])": "'Found an array with one or more elements'" },
        { "#default()": "'Found something else'" }
    ]
}

output.json

{
    "result": "Found an array with one or more elements"
}

Try it in the playground →

Related

#is · #given · #default