What is the difference between oneOf and anyOf?
anyOf means the item must validate against at least one (but possibly more than one) of the schemas. oneOf means it must validate against only one of the schemas.
What is $id in JSON Schema?
$id is a reserved keyword. It serves for: Declaring an identifier for the schema or subschema. Declaring a base URL against which $ref URLs are resolved.
What is allOf in swagger?
allOf – validates the value against all the subschemas. anyOf – validates the value against any (one or more) of the subschemas.
What is oneOf in JSON Schema?
Here oneOf is a keyword construct in the JSON Schema, which is used to provide an array of criteria where, if exactly one of them is valid, the whole block is valid.
How do I test a JSON Schema?
The simplest way to check if JSON is valid is to load the JSON into a JObject or JArray and then use the IsValid(JToken, JsonSchema) method with the JSON Schema. To get validation error messages, use the IsValid(JToken, JsonSchema, IList<String> ) or Validate(JToken, JsonSchema, ValidationEventHandler) overloads.
What is schema in REST API?
A schema is metadata that tells us how our data is structured. Most databases implement some form of schema which enables us to reason about our data in a more structured manner. The WordPress REST API utilizes JSON Schema to handle the structuring of its data.
What is JSON Schema validation?
Overview. JSON Schema validation asserts constraints on the structure of instance data. An instance location that satisfies all asserted constraints is then annotated with any keywords that contain non-assertion information, such as descriptive metadata and usage hints.
Why do we need JSON Schema?
The primary strength of JSON Schema is that it generates clear, human- and machine-readable documentation. It’s easy to accurately describe the structure of data in a way that developers can use for automating validation. This makes work easier for developers and testers, but the benefits go beyond productivity.
Can JSON have a schema?
JSON has a schema. REST services have WADL. Also there are tools like wadl2java . Old question, but worth clarifying: The JSON Schema standard includes “hyper-schemas”, which specify links/actions – including HTTP method, required data (specified as JSON Schema), and expected results.
Where should I put JSON schema?
The data can be placed anywhere. From Google’s documentation: The data, enclosed within the <script type=”application/ld+json”> … </script> tags as shown in the examples below, may be placed in either the <HEAD> or <BODY> region of the page that displays that event.
What is the purpose of schema?
The purpose of a schema is to define and describe a class of XML documents by using these constructs to constrain and document the meaning, usage and relationships of their constituent parts: datatypes, elements and their content, attributes and their values, entities and their contents and notations.
How do you write a schema?
How Do I Implement Schema Markup on My Site?
- Go to Google’s Structure Data Markup Helper.
- Select the type of data that you plan to markup.
- Paste in the URL of the page or article you want to markup.
- Highlight and select the type of elements to be marked up.