sets

[LinusU]

How about having sets, which is really just arrays that can have predefined values at most one time?

Proposed syntax:

+ privileges (set[string], required)
    + network
    + mailman
    + procmod
    + procview
    + lpadmin
    + lpoperator

[zdne]

+ privileges (array[string], fixed)
    + network
    + mailman
    + procmod
    + procview
    + lpadmin
    + lpoperator

Is what you looking at. Do not forget that the required there makes privileges key mandatory in its parent object.

[zdne]

fixed is essentially saying the instance of this type should appear exactly as defined below.

[zdne]

oh wait, you want just one value to be there?

[zdne]

or any number of those values? but only the values from the set?

[zdne]

Either way I think it might have a solution with combination of array enum and maybe fixed

[LinusU]

I want the following objects to be considered valid:

{ "privileges": [] }
{ "privileges": [ "procmod" ] }
{ "privileges": [ "procmod", "lpoperator", "network" ] }

And the following to be considered invalid:

{}
{ "privileges": [ "somethingelse" ] }
{ "privileges": [ "procmod", "procmod", "network" ] }

[honzajavorek]

I personally understand "set" as something like array, but with unique members and unsorted.

The uniqueness could be theoretically achieved by a validation rule. The fact it's unsorted... not sure how much that's important in web API contracts. On 17 Mar 2016 10:14 p.m., "Linus Unnebäck" notifications@github.com wrote:

I want the following objects to be considered valid:

{ "privileges": [] } { "privileges": [ "procmod" ] } { "privileges": [ "procmod", "lpoperator", "network" ] }

And the following to be considered invalid:

{} { "privileges": [ "somethingelse" ] } { "privileges": [ "procmod", "procmod", "network" ] }

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[LinusU]

@zdne Does "s1: awaiting input" mean that you are waiting on more information from me? I'm happy to help or provide more info 👍

[pksunkara]

@LinusU I think we are waiting for more feedback from other users here.

I also wonder how JSON Schema handles this.

[LinusU]

JSON Schema:

{
  "type": "array",
  "uniqueItems": true,
  "items": {
    "enum": [ "network", "mailman", "procmod", "procview", "lpadmin", "lpoperator" ]
  }
}

[zdne]

@LinusU

I want the following objects to be considered valid

{ "privileges": [] }
{ "privileges": [ "procmod" ] }
{ "privileges": [ "procmod", "lpoperator", "network" ] }

@LinusU in that case, this should be the solution:

# Permitted Values (enum[string))
- procmod
- lpoperator
- network

# My Object
- set (array[Permitted Values])

Does it work?

[LinusU]

@zdne That would work for the happy case, but then this array would also be considered valid:

[ "procmod", "procmod" ]

[zdne]

@LinusU fair point. I think we have a case for set or a new type modifier (unique)?