Get all fields from a Datomic entity

Question

The \'Embedded\' section of the Datomic Queries and Rules document says:

Query languages like SQL are oriented around a client-server model where, in a

Answer 1

Having the entity (id) from query like:

=> (def eid (d/q '[:find ?e :where [?e :myapp/name "Fred"]] (db conn)))

you can get the EntityMap:

=> (def ent (d/entity (db conn) (ffirst eid)))

so you can access fields/attributes without making additional query:

=> (seq ent)
;; ([:myapp/name "Fred"] [:myapp/age 16] [:myapp/email "fred@email.com"])

however it may be easier to get the keys first:

=> (keys ent)
;; (:myapp/name :myapp/age :myapp/email)

You can even get reverse keys ("foreign" ref attributes that point to this entity) using the following trick:

=> (.touch ent)
=> (keys (.cache ent))