https://github.com/souenzzo/eav-pull

create queries from patterns
https://github.com/souenzzo/eav-pull

Last synced: about 2 months ago
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create queries from patterns

• Host: GitHub
• URL: https://github.com/souenzzo/eav-pull
• Owner: souenzzo
• License: epl-1.0
• Created: 2018-10-17T01:18:36.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2020-03-10T20:40:05.000Z (almost 5 years ago)
• Last Synced: 2024-03-10T10:02:57.635Z (10 months ago)
• Language: Clojure
• Size: 9.77 KB
• Stars: 1
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# eav-pull

Get data from db as `eav` tuples

## Usage

lein/boot: `[eav-pull "0.1.0"]`

tools-deps:

```clojure

eav-pull {:git/url "https://github.com/souenzzo/eav-pull.git"

          :sha     "494a906b32c1767ff3c71f0c1df387ac0df7a27f"}

```

```clojure

(require '[eav-pull.core :as eav])

;; should work in datomic-client and datascript too.

(require '[datomic.api :as d])

;; tradicional pull/query:

(d/q '[:find [(pull ?e [:user/name {:user/friends [:user/name]}]) ...]

       :where [?e :user/id]] db)

;; => [{:user/name "Alice"

;;      :user/friends [{:user/name "Bob"}

;;                     {:user/name "Jack"}]}

;;     {:user/name "Bob"

;;      :user/friends [{:user/name "Jack"}]}

;;     {:user/name "Jack"}]

;; eav query:

(d/q (eav/->query '{::eav/find ?e

                    ::eav/pattern [:user/name

                                   {:user/friends [:user/name]}]

                    ::eav/where [[?e :user/id]]}) db)

;; => #{[1 :user/name "Alice"]

;;      [2 :user/name "Bob"]

;;      [3 :user/name "Jack"]

;;      [1 :user/friends 2]

;;      [1 :user/friends 3]

;;      [2 :user/friends 3]}

```