确保 JSON 模式中的一个属性不为空
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Ensure one property is not empty in JSON schema
提问by Ric
For the given schema below, is it possible to ensure that at least one property contains a value (ie, minLength is 1):
对于下面给定的模式，是否可以确保至少一个属性包含一个值（即 minLength 为 1）：
{
"$schema": "http://json-schema.org/draft-04/schema#",
"type": "object",
"properties": {
"fundRaiseId": {
"type": "string"
},
"productTypeId": {
"type": "string"
},
"businessLineId": {
"type": "string"
}
}
}
So this would pass validation:
所以这将通过验证：
{
"fundRaiseId": "x"
}
And this would fail as no values are present:
这将失败，因为没有值存在：
{
"fundRaiseId": "",
"productTypeId": "",
"businessLineId": ""
}
回答by erosb
I would try something like
我会尝试类似的东西
{
"allOf": [{
"type": "object",
"properties": {
"fundRaiseId": {
"type": "string"
},
"productTypeId": {
"type": "string"
},
"businessLineId": {
"type": "string"
}
}
}, {
"anyOf": [{
"properties": {
"fundRaiseId": {
"$ref": "#/definitions/nonEmptyString"
}
}
}, {
"properties": {
"productTypeId": {
"$ref": "#/definitions/nonEmptyString"
}
}
}, {
"properties": {
"businessLineId": {
"$ref": "#/definitions/nonEmptyString"
}
}
}]
}],
"definitions": {
"nonEmptyString": {
"type": "string",
"minLength": 1
}
}
}
Explanation: the JSON to be validated should conform to 2 root-level schemas, one is your original definition (3 string properties). The other one contains 3 additional sub-schemas, each defining one of your original properties as non-empty string. These are wrapped in an "anyOf" schema, so at least oneof these should match, plus the original schema.
说明：要验证的 JSON 应符合 2 个根级架构，一个是您的原始定义（3 个字符串属性）。另一个包含 3 个额外的子模式，每个子模式将您的原始属性之一定义为非空字符串。这些被包装在一个“anyOf”模式中，所以至少其中一个应该匹配，加上原始模式。
回答by Jason Desrosiers
Is it a requirement that you allow the values to be empty? You can write a much cleaner schema if you requiring that all the strings are non-empty.
是否要求允许值为空？如果您要求所有字符串都非空，您可以编写一个更清晰的模式。
{
"$schema": "http://json-schema.org/draft-04/schema#",
"type": "object",
"properties": {
"fundRaiseId": { "$ref": "#/definitions/non-empty-string" },
"productTypeId": { "$ref": "#/definitions/non-empty-string" },
"businessLineId": { "$ref": "#/definitions/non-empty-string" }
},
"anyOf": [
{ "required": ["fundRaiseId"] },
{ "required": ["productTypeId"] },
{ "required": ["businessLineId"] }
],
"definitions": {
"non-empty-string": {
"type": "string",
"minLength": 1
},
}
}
