AllOf : All of the contained schemas must validate against the instance value. AnyOf : One or more of the contained schemas must validate against the instance value. OneOf : One (and only one) of the contained schemas must validate against the instance value.
What is anyOf in swagger?
anyOf – validates the value against any (one or more) of the subschemas.
What is JSON Schema used for?
JSON Schema is a lightweight data interchange format that generates clear, easy-to-understand documentation, making validation and testing easier. JSON Schema is used to describe the structure and validation constraints of JSON documents.
What is oneOf schema?
“oneOf” can be used to provide an array of criteria where, if exactly one of them is valid, the whole block is valid. … Note that every entry in the array must be a valid schema attribute and, therefore, a json object. So the “required” attribute is nested in “oneOf” and not the other way around.
What is JSON Schema file?
JSON Schema is an IETF standard providing a format for what JSON data is required for a given application and how to interact with it. Applying such standards for a JSON document lets you enforce consistency and data validity across similar JSON data.
What is discriminator OpenAPI?
When an API can return two or more different types of objects (aka polymorphism), use oneOf or anyOf to describe those schemas (a JSON Schema concept). You might also want to use the discriminator (an OpenAPI concept).
What is a model in swagger?
A swagger:model annotation optionally gets a model name as extra data on the line. when this appears anywhere in a comment for a struct, then that struct becomes a schema in the definitions object of swagger. The struct gets analyzed and all the collected models are added to the tree.
What do you mean by schema?
A schema is a cognitive framework or concept that helps organize and interpret information. Schemas can be useful because they allow us to take shortcuts in interpreting the vast amount of information that is available in our environment.
What is a schema file?
IBM® InfoSphere® Information Analyzer provides an XML schema definition (XSD) file that defines the message formats used by the HTTP APIs. The HTTP APIs use XML documents to exchange information between the client and the server. The information that the server returns is also in XML format. …
Does 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.
What is oneOf in JSON?
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.
What is discriminator in swagger?
The discriminator is the schema property name that is used to differentiate between other schema that inherit this schema. The property name used MUST be defined at this schema and it MUST be in the required property list. When used, the value MUST be the name of this schema or any schema that inherits it.
What is JSON Schema additionalProperties?
The additionalProperties keyword is used to control the handling of extra stuff, that is, properties whose names are not listed in the properties keyword or match any of the regular expressions in the patternProperties keyword. By default any additional properties are allowed.
What is schema and example?
schema, in social science, mental structures that an individual uses to organize knowledge and guide cognitive processes and behaviour. … Examples of schemata include rubrics, perceived social roles, stereotypes, and worldviews.
What is schema in API?
The Schema API allows modules to declare their database tables in a structured array (similar to the Form API) and provides API functions for creating, dropping, and changing tables, columns, keys, and indexes. Database schemas and their abstractions are a large topic in computer science and software development.
How do I write a JSON Schema file?
JSON Schema Example
You will use this to give a title to your schema. A little description of the schema. The type keyword defines the first constraint on our JSON data: it has to be a JSON Object. Defines various keys and their value types, minimum and maximum values to be used in JSON file.