If-then condition in JSON Schema isn't working - json

Following is the jsonSchema.
{
"$schema": "http://json-schema.org/draft-07/schema#",
"type": "array",
"items": [
{
"type": "object",
"properties": {
"isMerchant": {
"type": "boolean"
},
"isAgent": {
"type": "boolean"
},
"cashLoan": {
"type": "boolean"
},
"personalDetail": {
"type": "string"
},
"contact": {
"type": "object",
"properties": {
"email": {
"type": "string"
},
"mobile": {
"type": "integer"
},
"area": {
"type": "string"
},
"state": {
"type": "string"
}
},
"required": ["state"]}
},
"required": ["isMerchant","cashLoan","contact"],
"allOf": [
{
"if": {
"properties": {
"isMerchant": {"enum": [true]}
}
},
"then": {
"required": [ "isAgent","email","mobile"]
}
},
{
"if": {
"properties": {
"cashLoan": {"enum": [true]}
}
},
"then": {
"required": ["personalDetail"]
}
}
]
}
]
}
Expectation is to validate the corresponding JSON data with this JSON schema. where conditions are as follows -
If 'isMerchant' = true then the params 'isAgent', 'email', 'mobile' should be present in the json file.
If 'cashLoan' = true then param 'personalDetail' should be present.


With draft 2020-12, the type of the items keyword can only be object or boolean.


You need to add a "requires": [...] to your if conditions, because the properties keyword will evaluate to true if the property is not present at all, therefore you are entering the then conditionals when you don't intend to.

Related

Validate JSON Schema based on "type" property

I have the following JSON which validates against my current schema:
{
"information": [
{
"value": "closed",
"type": "power"
},
{
"value": "on",
"type": "door"
}
]
}
However, I want this validation to fail (since open/closed should relate to door, and on/off should only relate to power.
How can I tie the two together?
My current working schema:
"$schema": "http://json-schema.org/draft-07/schema#",
"type": "object",
"definitions": {
"Type": {
"type": "string",
"enum": ["power", "door"]
},
"Power": {
"type": "string",
"enum": ["on", "off"]
},
"Door": {
"type": "string",
"enum": ["open", "closed"]
},
"InformationField": {
"type": "object",
"required": [ "type", "value" ],
"properties": {
"label": { "type": "string" },
"value": {
"anyOf": [
{ "$ref": "#/definitions/Power"},
{ "$ref": "#/definitions/Door"}
]
},
"type": { "$ref": "#/definitions/Type" }
}
},
"Information": {
"type": "array",
"items": { "$ref": "#/definitions/InformationField" }
},
},
"properties": {
"information": { "$ref": "#/definitions/Information" }
},
}
I have a lot of types, so I want to do this in the cleanest way possible.
Here is one of my attempts, which fails to validate correctly:
{
"$schema": "http://json-schema.org/draft-07/schema#",
"type": "object",
"definitions": {
"Type": {
"type": "string",
"enum": ["power", "door"]
},
"Power": {
"type": "string",
"enum": ["on", "off"]
},
"Door": {
"type": "string",
"enum": ["open", "closed"]
},
"InformationField": {
"type": "object",
"required": [ "label", "value" ],
"properties": {
"label": { "type": "string" },
"type": { "$ref": "#/definitions/Type" }
},
"anyOf": [
{
"if": {
"properties": { "type": { "const": "power" } }
},
"then": {
"properties": { "value": { "$ref": "#/definitions/Power" } }
}
},
{
"if": {
"properties": { "type": { "const": "door" } }
},
"then": {
"properties": { "value": { "$ref": "#/definitions/Door" } }
}
}
]
},
"Information": {
"type": "array",
"items": { "$ref": "#/definitions/InformationField" }
},
},
"properties": {
"information": { "$ref": "#/definitions/Information" }
},
}
(Validates, even though it shouldn't ...)

Changed anyOf to allOf in my attempt, which fixes validation.
My reasoning as to why this works:
From the anyOf JSON schema spec:
5.5.4.2. Conditions for successful validation
An instance validates successfully against this keyword if it validates successfully against at least one schema defined by this keyword's value.
If my first if condition is false, then it doesn't evaluate the then, and is therefore valid.
Using allOf evaluates every condition's validation (not the condition itself).

Assistance needed to create JSON schema

As I am new to JSON schema creation, I have learnt the basics of JSON schema and now I am trying to create JSON schema for the below mentioned set of data,
{
"Result": [
{
"ResourceName": "Appointment",
"Sequence": "1",
"Data": {
"AppointmentID": "A1234",
"PatientName": "Test Patient",
"ClinicName": "Test Clinic"
}
},
{
"ResourceName": "EpisodeofCare",
"Sequence": "2",
"Data": {
"EpisodeID": "EP1234",
"LocationId": "L1234",
"AppointmentId": "A1234",
"TransactionStatus": "2",
"OPNumber": "OP523367"
}
},
{
"ResourceName": "Encounter",
"Sequence": "3",
"Data": {
"EncounterID": "E1234",
"PatientID": "P1234"
}
}
]
}
Can anybody please help me to create JSON schema for this kind of data set.
Thanks in advance for helping me out on this.
Below is the JSON schema i have drafted
{
"$schema": "http://json-schema.org/draft-07/schema#",
"definitions": {
"ResultType": {
"type": "object",
"properties": {
"ResourceName": {
"type": "string"
},
"Sequence": {
"type": "string"
},
"Data": {
"type": "object",
"anyOf": [
{
"$ref": "#/definitions/Appointment"
},
{
"$ref": "#/definitions/EpisodeofCare"
},
{
"$ref": "#/definitions/Encounter"
}
]
}
}
},
"Appointment": {
"type": "object",
"properties": {
"AppointmentID": {
"type": "boolean"
},
"PatientName": {
"type": "string"
},
"ClinicName": {
"type": "string"
}
}
},
"EpisodeofCare": {
"type": "object",
"properties": {
"EpisodeID": {
"type": "string"
},
"LocationId": {
"type": "string"
},
"AppointmentId": {
"type": "string"
},
"TransactionStatus": {
"type": "string"
},
"OPNumber": {
"type": "string"
}
}
},
"Encounter": {
"type": "object",
"properties": {
"EncounterID": {
"type": "string"
},
"PatientID": {
"type": "string"
}
}
}
},
"type": "object",
"properties": {
"Result": {
"type": "array",
"$ref": "#/definitions/ResultType"
}
}
}

Throw it in a schema validator like this one.
You will see errors in your schemas definition and in validation.
First of all check that your schema is valid json (the validator might help):
[
{
{"$ref": "#/definitions/Appointment"} <- unnecessary and invalid braces
},
{
{"$ref": "#/definitions/EpisodeofCare"} <- unnecessary and invalid braces
},
{
{"$ref": "#/definitions/Encounter"} <- unnecessary and invalid braces
}
]
Within the Result property you want each item of the array. You should use the item property instead of ref. As taken from the specification:
The value of "items" MUST be either a valid JSON Schema or an array of valid JSON Schemas.
[...]
If "items" is a schema, validation succeeds if all elements in the array successfully validate against that schema.
Thus you should use
{
"type": "object",
"properties": {
"Result": {
"type": "array",
"items": {
"$ref": "#/definitions/ResultType"
}
}
}
}
Since the schema should be as specific as possible you should constraint the content of the ResourceName properties to the actual data layout.
Use the const property to define a constant value for the ResourceName for each type of Resource. Take for example the Appointment type, which would change to:
"Appointment": {
"type": "object",
"properties": {
"ResourceName": {
"const": "Appointment"
},
"Data": {
"type": "object",
"properties": {
"AppointmentID": {
"type": "string"
},
"PatientName": {
"type": "string"
},
"ClinicName": {
"type": "string"
}
}
}
}
I also changed the type of AppointmentID to string.
Then your ResultType needs to be adjusted. Before you used anyOf to validate the data, now you need it to validate the complete object while still maintaining the overall structure:
"ResultType": {
"allOf": [
{
"type": "object",
"properties": {
"ResourceName": {
"type": "string"
},
"Sequence": {
"type": "string"
},
"Data": true
}
},
{
"anyOf": [
{
"$ref": "#/definitions/Appointment"
},
{
"$ref": "#/definitions/EpisodeofCare"
},
{
"$ref": "#/definitions/Encounter"
}
]
}
]
}
The allOf propertiy implies a and condition. The overall structure (the object) does not care what value ResourceName has or how Data is structured. The specific implementations (the anyOf part) take care of that.
Some final improvements. Use the required property to define the names of properties that must exist in your JSON file. Also add "additionalProperties": false to ensure that only the specified properties are used. And finally constraint your sequence values to be string representations of positive intergers by adding "pattern": "[1-9]\\d*".
Final result:
{
"$schema": "http://json-schema.org/draft-07/schema#",
"definitions": {
"ResultType": {
"allOf": [
{
"type": "object",
"required": [
"ResourceName",
"Sequence",
"Data"
],
"additionalProperties": false,
"properties": {
"ResourceName": {
"type": "string"
},
"Sequence": {
"type": "string",
"pattern": "[1-9]\\d*"
},
"Data": true
}
},
{
"anyOf": [
{
"$ref": "#/definitions/Appointment"
},
{
"$ref": "#/definitions/EpisodeofCare"
},
{
"$ref": "#/definitions/Encounter"
}
]
}
]
},
"Appointment": {
"type": "object",
"properties": {
"ResourceName": {
"const": "Appointment"
},
"Data": {
"type": "object",
"required": [
"AppointmentID",
"PatientName",
"ClinicName"
],
"additionalProperties": false,
"properties": {
"AppointmentID": {
"type": "string"
},
"PatientName": {
"type": "string"
},
"ClinicName": {
"type": "string"
}
}
}
}
},
"EpisodeofCare": {
"type": "object",
"properties": {
"ResourceName": {
"const": "EpisodeofCare"
},
"Data": {
"type": "object",
"required": [
"EpisodeID",
"LocationId",
"AppointmentId",
"TransactionStatus",
"OPNumber"
],
"additionalProperties": false,
"properties": {
"EpisodeID": {
"type": "string"
},
"LocationId": {
"type": "string"
},
"AppointmentId": {
"type": "string"
},
"TransactionStatus": {
"type": "string"
},
"OPNumber": {
"type": "string"
}
}
}
}
},
"Encounter": {
"type": "object",
"properties": {
"ResourceName": {
"const": "Encounter"
},
"Data": {
"type": "object",
"required": [
"EncounterID",
"PatientID"
],
"additionalProperties": false,
"properties": {
"EncounterID": {
"type": "string"
},
"PatientID": {
"type": "string"
}
}
}
}
}
},
"type": "object",
"required": [
"Result"
],
"additionalProperties": false,
"properties": {
"Result": {
"type": "array",
"items": {
"$ref": "#/definitions/ResultType"
}
}
}
}

you can create json schema by online tools which generates json schema from the json
like: https://www.liquid-technologies.com/online-json-to-schema-converter , it also checks if json is valid or not.
Json Schema that you need:
{
"$schema": "http://json-schema.org/draft-04/schema#",
"type": "object",
"properties": {
"Result": {
"type": "array",
"items": [
{
"type": "object",
"properties": {
"ResourceName": {
"type": "string"
},
"Sequence": {
"type": "string"
},
"Data": {
"type": "object",
"properties": {
"AppointmentID": {
"type": "string"
},
"PatientName": {
"type": "string"
},
"ClinicName": {
"type": "string"
}
},
"required": [
"AppointmentID",
"PatientName",
"ClinicName"
]
}
},
"required": [
"ResourceName",
"Sequence",
"Data"
]
},
{
"type": "object",
"properties": {
"ResourceName": {
"type": "string"
},
"Sequence": {
"type": "string"
},
"Data": {
"type": "object",
"properties": {
"EpisodeID": {
"type": "string"
},
"LocationId": {
"type": "string"
},
"AppointmentId": {
"type": "string"
},
"TransactionStatus": {
"type": "string"
},
"OPNumber": {
"type": "string"
}
},
"required": [
"EpisodeID",
"LocationId",
"AppointmentId",
"TransactionStatus",
"OPNumber"
]
}
},
"required": [
"ResourceName",
"Sequence",
"Data"
]
},
{
"type": "object",
"properties": {
"ResourceName": {
"type": "string"
},
"Sequence": {
"type": "string"
},
"Data": {
"type": "object",
"properties": {
"EncounterID": {
"type": "string"
},
"PatientID": {
"type": "string"
}
},
"required": [
"EncounterID",
"PatientID"
]
}
},
"required": [
"ResourceName",
"Sequence",
"Data"
]
}
]
}
},
"required": [
"Result"
]
}

why doesn't json schema validate definitions defined in required attribute

I'm trying to create a json schema that validates an object depending on its type. It picks the right definition, however, it doesn't validate the required attributes in the selected definition. Here is the json schema i am trying:
{
"$schema": "http://json-schema.org/draft-07/schema#",
"definitions": {
"literal": {
"type": "object",
"properties": {
"raw": { "type": "string" }
},
"required": ["raw"],
"additionalProperties": false
},
"identifier": {
"type": "object",
"properties": {
"name": { "type": "string" }
},
"required": ["name"],
"additionalProperties": false
}
},
"type": "object",
"oneOf": [
{
"type": "object",
"properties": {
"type": {
"enum": ["Literal"]
},
"content": { "$ref": "#/definitions/literal" }
}
},
{
"type": "object",
"properties": {
"type": {
"enum": ["Identifier"]
},
"content": { "$ref": "#/definitions/identifier" }
}
}
],
"required": ["type"]
};
the following schema is valid, even tho its missing the "raw" property:
{ "type" : "Literal" }
thanks

There is no keyword content in JSON Schema spec.
Once you have asserted "type":"object" in root schema, there is no need to do it again in subschema.
In order to combine object type enumerated value with associated extended definition, you need allOf keyword.
Also in definitions if you use "additionalProperties": false you have to list all properties of the object (see "type": {}). For previously defined/validated properties you can just use permissive schema: {} or true.
{
"$schema": "http://json-schema.org/draft-07/schema#",
"definitions": {
"literal": {
"properties": {
"type": {},
"raw": { "type": "string" }
},
"required": ["raw"],
"additionalProperties": false
},
"identifier": {
"properties": {
"type": {},
"name": { "type": "string" }
},
"required": ["name"],
"additionalProperties": false
}
},
"type": "object",
"oneOf": [
{
"allOf": [
{
"properties": {
"type": {
"enum": ["Literal"]
}
}
},
{"$ref": "#/definitions/literal"}
]
},
{
"allOf": [
{
"properties": {
"type": {
"enum": ["Identifier"]
}
}
},
{"$ref": "#/definitions/identifier" }
]
}
],
"required": ["type"]
}

Json schema auto completion property

I have already created my own schema on intellij environment, and it's working good, but still have problems in auto completion which provides intellij to the schema,
for example if object "car" defined in json schema then intellij can recognize that there's such object in the schema and intellij will give it as suggestion through out coding json, the problem that I'm facing is that the suggestions are contains all the objects that defined in the schema, but the expectations are to get the objects which defined under the scoop of another object
This is some code of my own schema:
{
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Pipe File",
"type": "object",
"definitions": {
"Pipe": {
"type": "object",
"properties": {
"components": {
"$ref": "#/definitions/components"
}
},
"required": [
"components"
]
},
"components": {
"description": "section which defines the pipes in the file",
"type": "array",
"minItems": 1,
"items": {
"oneOf": [
{
"$ref": "#/definitions/setValuesComponent"
},
{
"$ref": "#/definitions/invokeWebServicesComp"
}
]
}
},
"setValuesComponent": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"type": {
"enum": [
"setValuesComp"
]
},
"out": {
"type": "object",
"properties": {
"dateFormat": {
"$ref": "#/definitions/setValuesCompOut"
},
"dateTimeFormat": {
"$ref": "#/definitions/setValuesCompOut"
},
"dateFormatBank": {
"$ref": "#/definitions/setValuesCompOut"
}
}
},
"condition": {
}
},
"required": [
"name",
"type",
"out"
]
},
"setValuesCompOut": {
"type": "object",
"properties": {
"exprValue": {
"type": "string"
},
"ctxEntry": {
"type": "string"
},
"value": {
"type": "string"
},
"exprConst": {
"type": "string",
"pattern": "(Class|class)\\.\\w+\\.\\w+"
}
},
"anyOf": [
{
"required": [
"exprValue"
]
},
{
"required": [
"ctxEntry"
]
},
{
"required": [
"value"
]
},
{
"required": [
"exprConst"
]
}
]
},
"invokeWebServicesComp": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"type": {
"enum": [
"invokeWebServices"
]
},
"mode": {
"enum": [
"innerJoin",
"leftJoin",
"union",
"parallelJoin"
]
},
"method": {
"type": "string"
},
"headers": {
"$ref": "#/definitions/invokeWebServicesCompHeaders"
},
"dataFilePath": {
"type": "string"
},
"restRelativeUrl": {
"type": "string"
},
"in": {
"$ref": "#/definitions/invokeWebServicesCompIn"
},
"out": {
"$ref": "#/definitions/invokeWebServicesCompOut"
}
},
"required": [
"type",
"name",
"out",
"in"
]
},
"invokeWebServicesCompOut": {
"type": "object",
"patternProperties": {
"doc": {
"type": "string",
"pattern": ".+"
}
}
},
"invokeWebServicesCompHeaders": {
"type": "object",
"patternProperties": {
".{1,}": {
"type": "string",
"pattern": ".+"
}
}
},
"invokeWebServicesCompIn": {
"type": "object",
"patternProperties": {
".{1,}": {
"type": "string",
"pattern": ".+"
}
}
},
"properties": {
"pipes": {
"description": "section which defines the mandatory pipes object in the file",
"type": "object",
"patternProperties": {
".{1,}": {
"$ref": "#/definitions/Pipe"
}
}
}
},
"required": [
"pipes"
]
}
}
So what I expected is, when the type of object determined to "setValuesComp", the auto completion will suggest the relevant properties, that's mean it will not suggest "in" property which is belong to "invokeWebServicesComp" not "setValuesComponent".this picture show the auto complete problem in my real environment

Your JSON schema seems to be invalid. The below JSON content should be present inside object type.
"properties": {
"pipes": {
"description": "section which defines the mandatory pipes object in the file",
"type": "object",
"patternProperties": {
".{1,}": {
"$ref": "#/definitions/Pipe"
}
}
}
},
"required": [
"pipes"
]
In your schema, it is present as part of the "definitions". Please make this correction and then check if you are able to get the suggestions.

AJV schema validation error

I have the input json like below,
{"contents":[{"type":"field"},{"type":"field","itemId":"594b9980e52b5b0768afc4e8"}]}
the condition is,
if the type is 'field', then 'itemId' should be the required field
and if the type is 'fieldGroup' or 'subSection', then 'itemId' is optional
This is the Json Schema I tried and its not working as expected,
"type": "object",
"additionalProperties": false,
"properties" : {
"contents" : {
"type" : "array",
"items": {"$ref": "#displayItem" }
}
},
"definitions": {
"displayItem" : {
"id": "#displayItem",
"type": "object",
"items": {
"anyOf": [
{"$ref": "#fieldType"},
{"$ref": "#fieldGroupSubSectionType"}
]
}
},
"fieldType" : {
"id": "#fieldType",
"type": "object",
"additionalProperties": false,
"properties": {
"itemId": {
"type": "string"
},
"type": {
"type": "string",
"enum": ["field"]
}
}
},
"fieldGroupSubSectionType" : {
"id": "#fieldGroupSubSectionType",
"type": "object",
"additionalProperties": false,
"properties": {
"itemId": {
"type": [ "string", "null" ]
},
"type": {
"type": "string",
"enum": [
"fieldGroup",
"subSection"
]
}
}
}
}
Any help / workaround with Sample Json Schema to achieve the above use case is appreciated.

If I understand the description of what you want correctly, then the json example you provide is not valid since it has a type: "field" but does not have an "itemId" property.
Assuming that is true. Instead of using
type: ["string", null]
use the required property.
I changed your schema a bit, instead of having separate definitions I inlined them, but other than that (and the use of required) is the same:
{
"type": "object",
"additionalProperties": false,
"properties": {
"contents": {
"type": "array",
"items": {
"anyOf": [
{
"type": "object",
"additionalProperties": false,
"properties": {
"itemId": {
"type": "string"
},
"type": {
"type": "string",
"enum": [
"field"
]
}
},
"required": [
"itemId"
]
},
{
"type": "object",
"additionalProperties": false,
"properties": {
"itemId": {
"type": "string"
},
"type": {
"type": "string",
"enum": [
"fieldGroup",
"subSection"
]
}
}
}
]
}
}
}
}

Here is your answer with a little cleanup for best practices and style. The trick is that you need to use implication "a implies b <=> (not a) or b". In this case you have "type = field implies itemId is required <=> type is not field or itemId is required".
{
"type": "object",
"properties": {
"contents": {
"type": "array",
"items": { "$ref": "#/definitions/displayItem" }
}
},
"definitions": {
"displayItem": {
"type": "object",
"properties": {
"itemId": { "type": "string" },
"type": { "enum": ["field", "fieldGroup", "subSection"] }
},
"anyOf": [
{ "not": { "$ref": "#/definitions/fieldType" } },
{ "required": ["itemId"] }
]
},
"fieldType": {
"properties": {
"type": { "enum": ["field"] }
}
}
}
}