Detect $dynamicRef in OpenAPI 3.0 documents (DynamicRefIn30 rule) - #203
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Parse layer keeps $dynamicRef as raw schema data; reference expansion support is left for a follow-up. The rule reports the version mismatch so 3.0 documents that smuggle the keyword in get flagged.
$dynamicRef on a 3.0 document warns and raises (JSON Schema 2020-12 dynamic referencing; 3.0 only knows $ref); the same keyword on a 3.1 document stays clean.
takayamaki
marked this pull request as ready for review
August 19, 2026 17:53
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Continuing the OpenAPI 3.1 work from #152.
OpenAPI 3.1 adopts JSON Schema 2020-12, which brings the
$dynamicRefreferencing mechanism.3.0 only knows
$ref.This PR adds detection of that version mismatch.
A 3.0 document using
$dynamicRefis relying on a keyword its declared version does not define, andSpecValidatorshould be able to say so.SpecValidator rule
DynamicRefIn30reports a violation for each schema in a 3.0 document that uses$dynamicRef:Detection inspects
raw_schemakey presence,so it fires regardless of whether the referenced anchor exists.
Scope
This PR does not make
$dynamicRefresolvable.$dynamicRefhas to branch its reference dynamically while the schema is being evaluated, which likely means redesigningSchemaValidatorin this gem.Resolving it is a TODO beyond this series of PRs.