Question

我有一个对象提供了一种资产版本的审计日志。它的一些属性（versionSource.metadata和versionSource.files）是应该针对两个模式之一进行验证的对象，具体取决于其中一个属性的值。我开始在我的子模式中使用一个常量（在oneOf内部，但这就是说所有的子模式都已经过验证（从而打破了oneOf，因为多个验证已经过验证。将其更改为但是，单值枚举可以工作。

为什么验证方面存在差异？

这是原始架构：

{
   "$id": "https://example.com/schemas/asset-version.json",
   "title": "Audit log of asset versions",
   "$schema": "http://json-schema.org/draft-07/schema",

   "type": "object",
   "required": [
      "assetID",
      "version",
      "versionSource"
   ],

   "properties": {
      "assetID": {
         "type": "string"
      },
      "version": {
         "type": "integer",
         "minimum": 1
      },
      "versionSource": {
         "type": "object",
         "properties": {
            "metadata": {
               "type": "object",
               "oneOf": [
                  {
                     "properties": {
                        "sourceType": { "constant": "client" }
                     }
                  },
                  {
                     "$ref": "#/definitions/version-source-previous-version"
                  }
               ]
            },
            "files": {
               "type": "object",
               "oneOf": [
                  {
                     "properties": {
                        "sourceType": { "constant": "upload" },
                        "sourceID": {
                           "type": "string"
                        }
                     }
                  },
                  {
                     "$ref": "#/definitions/version-source-previous-version"
                  }
               ]
            }
         }
      }
   },

   "definitions": {
      "version-source-previous-version": {
         "properties": {
            "sourceType": { "constant": "previous-version" },
            "sourceID": {
               "type": "integer",
               "minimum": 1
            }
         }
      }
   }
}

这是一个示例文档：

{
   "assetID": "0150a186-068d-43e7-bb8b-0a389b572379",
   "version": 1,
   "versionSource": {
      "metadata": {
         "sourceType": "client"
      },
      "files": {
         "sourceType": "upload",
         "sourceID": "54ae67b0-3e42-464a-a93f-3143b0f078fc"
      }
   },
   "created": "2018-09-01T00:00:00.00Z",
   "lastModified": "2018-09-02T12:10:00.00Z",
   "deleted": "2018-09-02T12:10:00.00Z"
}

还有一个：

{
   "assetID": "0150a186-068d-43e7-bb8b-0a389b572379",
   "version": 2,
   "versionSource": {
      "metadata": {
         "sourceType": "previous-version",
         "sourceID": 1
      },
      "files": {
         "sourceType": "previous-version",
         "sourceID": 1
      }
   },
   "created": "2018-09-01T00:00:00.00Z",
   "lastModified": "2018-09-02T12:10:00.00Z",
   "deleted": "2018-09-02T12:10:00.00Z"
}

这是我得到的错误：

消息：JSON对'oneOf'中的多个模式有效。有效的模式索引：0,1。架构路径： https://example.com/schemas/asset-version.json#/properties/versionSource/properties/metadata/oneOf

由于sourceType在oneOf内的两个模式中都是常量，所以我真的不确定我的对象如何对两个模式都有效。

尽管如此，将模式更改为以下内容：

{
   "$id": "https://example.com/schemas/asset-version.json",
   "title": "Audit log of asset versions",
   "$schema": "http://json-schema.org/draft-07/schema",

   "type": "object",
   "required": [
      "assetID",
      "version",
      "versionSource"
   ],

   "properties": {
      "assetID": {
         "type": "string"
      },
      "version": {
         "type": "integer",
         "minimum": 1
      },
      "versionSource": {
         "type": "object",
         "properties": {
            "metadata": {
               "type": "object",
               "oneOf": [
                  {
                     "properties": {
                        "sourceType": { "enum": [ "client" ] }
                     }
                  },
                  {
                     "$ref": "#/definitions/version-source-previous-version"
                  }
               ]
            },
            "files": {
               "type": "object",
               "oneOf": [
                  {
                     "properties": {
                        "sourceType": { "enum": [ "upload" ] },
                        "sourceID": {
                           "type": "string"
                        }
                     }
                  },
                  {
                     "$ref": "#/definitions/version-source-previous-version"
                  }
               ]
            }
         }
      }
   },

   "definitions": {
      "version-source-previous-version": {
         "properties": {
            "sourceType": { "enum": [ "previous-version" ] },
            "sourceID": {
               "type": "integer",
               "minimum": 1
            }
         }
      }
   }
}

我错过了什么？

Answer 1

这是我自己的错字...... constant应该是const。：捂脸：

Answer 2

根据草案7

应注意，对于具有单个元素的枚举，const仅仅是语法糖，因此以下内容是等效的：

{ "const": "United States of America" }

{ "enum": [ "United States of America" ] }

在某些渲染表单解决方案中使用default键来选择单个选项时，有些人可能会觉得有用。

Answer 3

嗯......没有什么东西对我来说是不正确的。由于你正在使用draft-07，你可以尝试使用if / then / else编写它，看看错误是否更有帮助。

JSON模式：为什么“常量”不能像单值“枚举”那样验证？

3 个答案: