clojure - Validating multiple polymorphic values using Prismatic Schema -



clojure - Validating multiple polymorphic values using Prismatic Schema -

a little while ago asked simple polymorphic schemas, , reply there worked time.

now map wish validate has additional value dependent upon key's value.

a contrived illustration of object:

{:type :foo {:type :bert {:type :foo :foo-param :bar :bert-size :medium :foo-param :bar :method :baz :method :baz :method :bang :baz-rate :max} :baz-rate :max} :bangness :considerable}

the discriminators here :type , :method, each of has own set of valid sibling keys , values.

previously :type existed, , next worked:

(def ^:private test-base-schema {:type (s/enum :foo :abc :banana)}) (def test-schema (s/conditional #(= (:type %) :foo) (merge test-base-schema {:foo-param s/keyword}) ; other conditions here ))

however there more 1 discriminator, number of conditional branches combinatorial.

one alternative allow {s/any s/any} in maps , using s/both, cannot allow schemas 'loose', unexpected key/values should seen invalid.

i not want alter construction of map beingness validated allow validation work using library.

is there sane way accomplish strict validation of maps have multiple conditional sub-schemas?

a snarky reply may smell info model less ideal, , should consider refactoring have nested construction

{:type-info {:type :foo :foo-param :bar} :method-info {:method :baz :baz-rate :max}}

a (perhaps) more helpful reply don't think easy out-of-the-box set of schemas, besides writing custom predicate validation.

if isn't desirable, guess need introduce new schema type. fortunately, easy in user code (or third-party library). unfortunately, don't see easy way represent these 2 concepts (strict union , conditional map structure) in crisp , orthogonal way (without combining them single conditional-union schema, or having union conditional-aware). believe there's a way, it's not obvious me @ first look.

clojure prismatic-schema

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