How to set limit to JSON schema object's value?

Question

I want to check particular value for multiple entry in a json file. I wrote a JsonSchema but it is not show me correct result.

For example:

"student": [
                        {
                            "main": false, 
                            "name": "Robert"  
                        }, 
                        {
                            "main": true, 
                            "name": "Jannet"
                        },
                        {
                            "main": false, 
                            "name": "Julie"
                        }
                    ]

the json file will be validate if it has only one true for "main" and rest will be false. If it has multiple true it will not validate. I tried the below jsonSchema:

"student":{
                                "type":"array",
                                "items":{
                                    "type":"object",
                                    "required":["name","main"],
                                    "properties":{
                                        "name":{
                                            "type":"string"
                                        },
                                        "main":{
                                            "type":"boolean"
                                        }
                                    },
                                            "anyOf":[
                                        {
                                            "properties":{
                                                "main":
                                                {
                                                "enum":[true]

                                                }   
                                            }
                                        }
                                    ]
                                }
                            }

score 0 · Answer 1 · answered Mar 17 '20 at 15:09

0

Unfortunately this isn't possible with JSON Schema.

The only way this COULD be possible with JSON Schema is if you also required that the item in the array that is main: true is the first item.

If you CAN mandate this, let me know in a comment and I'll update this answer to explain how this would work.

answered Mar 17 '20 at 15:09

Relequestual

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@Json I tried ""main":{ "type":"boolean", "contains": {"const": true}, "minContains": 1, "maxContains": 1 }" but it doesnt work – naqwe Mar 17 '20 at 15:17
You're probably not using a validator that support draft 2019-09. It's relatively new. – Jason Desrosiers Mar 17 '20 at 15:23
I used "validator = jsonschema.Draft7Validator(schema)" – naqwe Mar 17 '20 at 15:27
With draft-07, as you're OK with the first item being the ONLY one which may be `main:true`, I'll update my answer to reflect this. – Relequestual Mar 18 '20 at 09:25

How to set limit to JSON schema object's value?

1 Answers1