e85th.commons.datomic — e85th/commons 0.1.29

filter-kv clj

(filter-kv db m)

Get entities that satisfy filter conditions specified in m. m is a map of keyword -> values and become conditions in the :where clause. Answers with a seq of datomic entities that match. If a value is nil then adds that as a missing? call.

get-all-entities-with-attr clj

(get-all-entities-with-attr db attr)

Answers with all entities that have the specified attribute

get-by-composite-key clj

(get-by-composite-key db m)

Returns the only entity that matches filter conditions in m. Throws when more than one match is found.

get-db* clj

(get-db* db-or-cn)

get-entities-with-attr-by-ids clj

(get-entities-with-attr-by-ids db attr ids)

Get all entities by id which also have the specified attribute. If the ids is an empty seq then returns an empty seq.

get-entity-with-attr clj

(get-entity-with-attr db id attr)

Answers with the entity for the id and attr specified. Makes sure the attr is on the entity otherwise returns nil. db is Datomic record, id is an integer attr is a keyword.

get-entity-with-attr! clj

get-parent clj

(get-parent db ident eid)

Get's the parent for the entity with eid. ident is a keyword with reverse attribute navigation ie :parent/_attribute (NOT :parent/attribute). :parent/attribute must be of type :db.type/ref.

get-partitions clj

(get-partitions db)

Enumerates all partitions in the db.

new-datomic-db clj

(new-datomic-db uri)

Creates a new datomic db.

prepare-create clj

(prepare-create m)

Removes all keys where there is an associated nil value.

prepare-update clj

(prepare-update entity m)

(prepare-update db eid-or-lookup m)

m is a map of updated values, if m has nil values lookup the current value and generate a retraction.