{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "definitions": {
    "OrderType": {
      "type": "object",
      "properties": {
        "customer": {
          "type": "string"
        },
        "number": {
          "type": "integer",
          "minimum": 0,
          "exclusiveMinimum": true
        },
        "items": {
          "type": "integer",
          "minimum": 0,
          "exclusiveMinimum": false
        }
      },
      "required": [
        "number",
        "customer",
        "items"
      ]
    }
  }
}