What is Hal hypermedia?

Hypertext Application Language (HAL) is an Internet Draft (a “work in progress”) standard convention for defining hypermedia such as links to external resources within JSON or XML code (however, the latest version of HAL Internet-Draft expired on November 12, 2016.).

What is Hal standard?

The JSON Hypertext Application Language (HAL) is a standard which establishes conventions for expressing hyperlinks with JSON [RFC4627]. HAL is a generic media type with which Web APIs can be developed and exposed as series of links.

What is Hal response?

The response of a HAL request always has the following structure: { “_links” : {}, “_embedded” : {} } The property _links contains relational links that give an easy way to navigate between associated resources. A _links property contains at least a self relational link.

What is Hal HATEOAS?

HATEOAS (Hypermedia as the Engine of Application State) and HAL (Hypertext Application Language) seem to be related but are not exactly the same.

How is HAL used in hypermedia application language ( HAL )?

HAL is an IETF standard representation for hypermedia APIs, defined by Mike Kelley; JSON HAL defines a JSON representation. The media type application/hal+json identifies a HAL representation content type. It is used in Apiture Open Banking APIs for the produces (response bodies) and consumes (request bodies) types in the OpenAPI documents.

What is the Hal format for an apiture?

Apiture APIs use the Hypermedia Application Language (HAL) format. HAL is an IETF standard representation for hypermedia APIs, defined by Mike Kelley; JSON HAL defines a JSON representation. The media type application/hal+json identifies a HAL representation content type.

Which is the leading hypermedia type in modern APIs?

These virtues have lead HAL to become one of the leading hypermedia types in modern APIs. State is the traditional JSON key-value pairs defining the current state of the resource. Links in HAL are identified as a JSON object named _links.

What does hypermedia mean in a REST API?

I will use the term “Hypermedia” as a shorthand for “Hypermedia As The Engine Of Application State” (HATEOAS), which is one of the ugliest acronyms I’ve ever seen. Basically, it means that a REST API provides hyperlinks with each response that link to other related resources. Let’s try this concept on a simple book store example: