Xema is a schema validator inspired by JSON Schema. For now, Xema supports the features documented in draft 04, 06, and 07 of the JSON-Schema specification.

Xema allows you to annotate and validate elixir data structures.

If you search for a real JSON Schema validator give JsonXema a try.

Xema is in beta. If you try it and has an issue, report them.

First, add Xema to your mix.exs dependencies:

def deps do
  [{:xema, "~> 0.13"}]
end

Then, update your dependencies:

$ mix deps.get

The docs contains a Usage page with a short and compact description to use Xema.

Documentation can be generated with ExDoc by running mix docs. The generated docs can be found at https://hexdocs.pm/xema.

The test in the directory xema/test/json_schema_test_suite are generated from the JSON-Schema-Test-Suite.

The test suite can be generated with mix gen.test_suite. The mix task expected the suite in the root directory in the folder JSON-Schema-Test-Suite.

The home of JSON Schema: http://json-schema.org/

Specification:

• Draft-04
  • JSON Schema core defines the basic foundation of JSON Schema
  • JSON Schema Validation defines the validation keywords of JSON Schema
• Draft-06
  • JSON Schema core
  • JSON Schema Validation
  • JSON Schema Release Notes contains informations to migrate schemas.
• Draft-07
  • JSON Schema core
  • JSON Schema Validation
  • JSON Schema Release Notes

Understanding JSON Schema a great tutorial for JSON Schema authors and a template for the description of Xema.