Re: [Json] JSON Schema Language

[Carsten Bormann <[e-mail]>]

On May 7, 2019, at 18:15, Pete Cordell <[e-mail]> wrote:
> 
> long winded

Here are a few examples from the JSL draft with the CDDL equivalents (behind the “===“; note that CDDL supports both text and byte strings, so uses “text” for text strings):

   { “type”: “number” }     
   ===
   number

   {                        
     “elements”: {
       “type”: “number”
     }
   }
   ===
   [* number]

   ([] signifies an array, * signifies zero or more)

   {                           
     "properties": {
       "a": { "type": "string" },
       "b": { "type": "string" }
     },
     "optionalProperties": {
       "c": { "type": "string" },
       "d": { "type": "string" }
     }
   }
   ===
   { a: text, b: text, ? c: text, ? d: text }

   ({} signifies an object, ? signifies zero or one)

   {
     "values": {
       "type": "number"
     }
   }
   ===
   { * text => number }

   (=> can be used to separate type names for key and value)

   {
     "discriminator": {
       "tag": "version",
       "mapping": {
         "v1": {
           "properties": {
             "a": { "type": "number" }
           }
         },
         "v2": {
           "properties": {
             "a": { "type": "string" }
           }
         }
       }
     }
   }
   ===
   { tag: “v1”, a: number } / { tag: “v2”, a: text }

   (/ signifies a choice)

Noise in specifications hurts:
https://www.iab.org/wp-content/IAB-uploads/2016/03/Noise-in-specifications-hurts.pdf

Grüße, Carsten