[英]How to define the min size of array in the json schema
我想创建一个json文件模式,用于一系列产品。
json模式如下所示:
{
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Product set",
"type": "array",
"items": {
"title": "Product",
"type": "object",
"properties": {
"id": {
"description": "The unique identifier for a product",
"type": "number"
},
"name": {
"type": "string"
},
"price": {
"type": "number",
"minimum": 0,
"exclusiveMinimum": true
},
"tags": {
"type": "array",
"items": {
"type": "string"
},
"minItems": 1,
"uniqueItems": true
},
"dimensions": {
"type": "object",
"properties": {
"length": {"type": "number"},
"width": {"type": "number"},
"height": {"type": "number"}
},
"required": ["length", "width", "height"]
},
"warehouseLocation": {
"description": "Coordinates of the warehouse with the product",
"$ref": "http://json-schema.org/geo"
}
},
"required": ["id", "name", "price"]
}
}
该数组应至少包含一项。 如何定义数组的最小值?
我是否需要添加最小定义?
要设置数组中的最小项数,请使用"minItems"
。
看到:
http://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.3
和
http://jsonary.com/documentation/json-schema/?section=keywords/Array%20validation
{
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Product",
"description": "A product from Acme's catalog",
"type": "object",
"properties": {
...
"tags": {
"type": "array",
"items": {
"type": "string"
},
"minItems": 1,
"maxItems": 4,
"uniqueItems": true
}
},
"required": ["id", "name", "price"]
}
看起来v4草案可以满足您的需求。 从http://json-schema.org/example1.html :
{
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Product",
"description": "A product from Acme's catalog",
"type": "object",
"properties": {
...
"tags": {
"type": "array",
"items": {
"type": "string"
},
"minItems": 1,
"uniqueItems": true
}
},
"required": ["id", "name", "price"]
}
请注意,“标签”属性定义为一个数组,其中的项目数最少(1)。
如果您期望一个空数组,请像这样定义它。
{
"items": [ {} ],
"additionalItems": false
}
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