Json schema dynamic key validation - jsonschema

Question

Facing an issue with schema validation.
schema :
{
"type": "object",
"$schema": "http://json-schema.org/draft-03/schema",
"id": "#",
"required": true,
"patternProperties": {
"^[A-Z0-9._%+-]+#[A-Z0-9.-]+\.[A-Z]{2,6}$": {
"type": "object",
"required": true,
"properties": {
"_from": {
"id": "_from",
"type": "string",
"required": true
},
"message": {
"type": "object",
"id": "message",
"properties": {
"detail": {
"type": "string",
"id": "detail",
"required": true
},
"from": {
"type": "string",
"id": "from",
"required": true
}
}
}
}
}
}
}
json :
{
"tom#example.com": {
"_from": "giles#gmail.com",
"message": {
"from": "Giles#gmail.com",
"detail": "AnyonewanttomeetmeinParis"
}
},
"harry#example.com": {
"_from": "giles#gmail.com",
"message": {
"from": "Giles#gmail.com",
"detail": "AnyonewanttomeetmeinParis"
}
}
}
Here the key email address is dynamic, somehow it doesn't validate regex for email validation.
Can you please advise me to correct the schema.
I am validating using : http://json-schema-validator.herokuapp.com/index.jsp

Answer 1

I see in your pattern that you seem to have forgotten to escape some characters or didn't do it correctly:
"^[A-Z0-9._%+-]+#[A-Z0-9.-]+\.[A-Z]{2,6}$"
and it causes the error that you can see when you hover the mouse over the link at the top of the validator:
it should be:
"^[A-Z0-9\\._%\\+-]+#[A-Z0-9\\.-]+\\.[A-Z]{2,6}$"
or without escaping the inner/class characters but I'd use the first pattern because I think its intention is clearer:
"^[A-Z0-9._%+-]+#[A-Z0-9.-]+\\.[A-Z]{2,6}$"
You need to have two \ because the first \ is an escape for the second \. With a single one it wouldn't work because there is no escape sequence like \. or \+ in javascript. You want to have a \in the pattern itself.
However json schema patternProperties are case sensitive by default so you need to extend your email pattern by adding a-z to it:
"^[A-Za-z0-9\\._%\\+-]+#[A-Za-z0-9\\.-]+\\.[A-Za-z]{2,6}$"
(I didn't find any other way to make it case insensitive)
You also need to exclude any other property names by adding "additionalProperties": false next to the patternProperties or otherwise it catches everything else that does not match the pattern.
The working schema should then look like this:
{
"type": "object",
"$schema": "http://json-schema.org/draft-03/schema",
"id": "#",
"required": true,
"patternProperties": {
"^[A-Za-z0-9\\._%\\+-]+#[A-Za-z0-9\\.-]+\\.[A-Za-z]{2,6}$": {
"type": "object",
"required": true,
"properties": {
"_from": {
"id": "_from",
"type": "string",
"required": true
},
"message": {
"type": "object",
"id": "message",
"properties": {
"detail": {
"type": "string",
"id": "detail",
"required": true
},
"from": {
"type": "string",
"id": "from",
"required": true
}
}
}
}
}
},
"additionalProperties": false
}
I've tested it on: http://jsonschemalint.com/

Answer 2

Changed the schema as per draft 04 :
{
"type": "object",
"$schema": "http://json-schema.org/draft-04/schema",
"patternProperties": {
"^[A-Za-z0-9\\._%\\+-]+#[A-Za-z0-9\\.-]+\\.[A-Za-z]{2,6}$": {
"type": "object",
"properties": {
"__from": {
"type": "string"
},
"message": {
"type": "object",
"properties": {
"from": {
"type": "string"
},
"detail": {
"type": "string"
}
},
"required": [ "from","detail"]
}
},
"required": [ "__from","message"]
}
},
"additionalProperties": false
}