Query about key decorator @key

[xw695]

Hi,
I want to know the usage of key decorator(@key).
I have tried to add @key to 'id' property in my model and compiled with 2 emitters below. But the result is the same with model without @key. So it seems @key doesn't take effect in my case, why?

@azure-tools/typespec-ts
@typespec/openapi3

`model MyCalculationOutput {
@key
id: string;
processDate: plainDate;
result: string;
}

@get
@route("/$calculation")
op calculation(): MyCalculationOutput[] ;`

Thanks

[xw695]

The background is: The 'calculation' method returns a list of records. I want this list of records could be presented as a dictionary/map of records with the 'id' of each record used as the dictionary/map key

[bterlson]

Key conceptually flags the fields which identify the resource, but doesn't imply any special behavior for that type within an array. You can maybe get what you want by doing:

op calculation(): Record<MyCalculationOutput>

[xw695]

Thanks, I think you are right, it doesn't work as I expected. I will find a workaround for my request~