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@eslick
Last active May 6, 2016
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What would you like to do?
One solution to integrating Schema and Datomic
(in-ns test
(:require
[schema.macros :as macros]
[schema.utils :as sutils]))
;; Wrapper type needed because Entity values do not implement
;; IPersistentMap interface
(defrecord EntitySchema
[schema]
Schema
(walker [this]
(let [map-checker (s/subschema-walker schema)]
(fn [e]
(or (when-not (sd/entity? e)
(macros/validation-error this e
(list 'instance? datomic.Entity (sutils/value-name e))))
(map-checker (into {} (seq e)))))))
(explain [this]
(list 'entity 'datomic.Entity (explain (:schema this)))))
(defn entity-schema?
[schema]
(= (type schema) EntitySchema))
(defn model-base-schema
"Generates a schema for Datomic entity with model tag 'type'"
[type]
{:pre [(keyword? type)]}
(EntitySchema. {:model/id s/Uuid
:model/type (s/both s/Keyword (s/eq type))}))
@jcf

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@jcf jcf commented Sep 14, 2015

As sd/entity? is not defined you can use (instance? datomic.Entity e) in its place.

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