如何要求一个字段或另一个字段(或两个其他字段之一)，但不是全部? [英] How do I require one field or another or (one of two others) but not all of them?

问题描述

我在想出一个可以验证JSON是否包含以下内容的JSON模式时遇到了麻烦:

I am having trouble coming up with a JSON schema that will validate if the JSON contains either:

• 仅一个字段
• 仅另一个字段
• (其他两个字段之一)

但如果存在多个则不匹配.

but not to match when multiples of those are present.

在我的情况下，我想要

• copyAll
• fileNames
• matchesFiles和/或doesntMatchFiles

• copyAll
• fileNames
• matchesFiles and/or doesntMatchFiles

进行验证，但是我不想接受更多的东西.

to validate but I don't want to accept when more than that is there.

这是到目前为止我得到的:

Here's what I've got so far:

{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "type": "object",
    "required": [ "unrelatedA" ],
    "properties": {
    "unrelatedA": {
        "type": "string"
    },
    "fileNames": {
        "type": "array"
    },
    "copyAll": {
        "type": "boolean"
    },
    "matchesFiles": {
        "type": "array"
    },
    "doesntMatchFiles": {
        "type": "array"
        }
    },
    "oneOf": [
         {"required": ["copyAll"], "not":{"required":["matchesFiles"]}, "not":{"required":["doesntMatchFiles"]}, "not":{"required":["fileNames"]}},
         {"required": ["fileNames"], "not":{"required":["matchesFiles"]}, "not":{"required":["doesntMatchFiles"]}, "not":{"required":["copyAll"]}},
         {"anyOf": [
               {"required": ["matchesFiles"], "not":{"required":["copyAll"]}, "not":{"required":["fileNames"]}},
               {"required": ["doesntMatchFiles"], "not":{"required":["copyAll"]}, "not":{"required":["fileNames"]}}]}
    ]
} ;

此匹配项比我想要的要多.我希望它符合以下所有条件:

This matches more than I want to. I want this to match all of the following:

{"copyAll": true, "unrelatedA":"xxx"}
{"fileNames": ["aab", "cab"], "unrelatedA":"xxx"}
{"matchesFiles": ["a*"], "unrelatedA":"xxx"}
{"doesntMatchFiles": ["a*"], "unrelatedA":"xxx"}
{"matchesFiles": ["a*"], "doesntMatchFiles": ["*b"], "unrelatedA":"xxx"}

但不匹配:

{"copyAll": true, "matchesFiles":["a*"], "unrelatedA":"xxx"}
{"fileNames": ["a"], "matchesFiles":["a*"], "unrelatedA":"xxx"}
{"copyAll": true, "doesntMatchFiles": ["*b"], "matchesFiles":["a*"], "unrelatedA":"xxx"}
{"fileNames": ["a"], "matchesFiles":["a*"], "unrelatedA":"xxx"}
{"unrelatedA":"xxx"}

我想我很想念一些东西-我想知道它是什么.

I'm guessing there's something obvious I'm missing - I'd like to know what it is.

推荐答案

问题是"not"语义. 不需要"不表示禁止包含".这只是意味着您不必添加它即可验证该架构.

The problem is the "not" semantics. "not required" does not mean "inclusion forbidden". It just means that you don't have to add it in order to validate that schema.

但是，您可以使用"oneOf"以更简单的方式满足您的规范.请记住，这意味着只有这些模式之一可以验证".以下架构实现了您要解决的属性切换:

However, you can use "oneOf" to satisfy your specification in a simpler way. Remember that it means that "just one of these schemas can validate". The following schema achieves the property switching you are attempting to solve:

{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "type": "object",
    "required": [
        "unrelatedA"
    ],
    "properties": {
        "unrelatedA": {
            "type": "string"
        },
        "fileNames": {
            "type": "array"
        },
        "copyAll": {
            "type": "boolean"
        },
        "matchesFiles": {
            "type": "array"
        },
        "doesntMatchFiles": {
            "type": "array"
        }
    },
    "oneOf": [
        {
            "required": [
                "copyAll"
            ]
        },
        {
            "required": [
                "fileNames"
            ]
        },
        {
            "anyOf": [
                {
                    "required": [
                        "matchesFiles"
                    ]
                },
                {
                    "required": [
                        "doesntMatchFiles"
                    ]
                }
            ]
        }
    ]
}

这篇关于如何要求一个字段或另一个字段(或两个其他字段之一)，但不是全部?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！