git clone 'https://github.com/eudoxia0/crane.git'
Crane is an ORM for Common Lisp, providing a simple bridge between CLOS and relational databases, and out of the box migrations.
(deftable user () (name :type text :uniquep t) (age :type integer :nullp nil :initform 18))
(deftable user () (name :type text :uniquep t :nullp nil) (age :type integer :nullp t :initform 18) (description :type text))
Just make the changes, and Crane will compute the diffs and perform all the
ALTER TABLEs for you.
(setup :migrations-directory (asdf:system-relative-pathname :myapp #p"migrations/") :databases '(:main (:type :postgres :name "myapp_db" :user "user" :pass "user"))) (connect)
For configuration management and switching databases in development/production environments, you might want to use Envy.
(let ((instance (create 'ship :name "Dalliance" :tonnage "77"))) ;; FIXME: It's back luck to rename a ship (setf (name instance) "Serenity") ;; Expand the cargo hold (incf (tonnage instance) 25) ;; Save these changes! (save instance) ;; Time to retire (del instance))
(filter 'user) ;; Returns everything (filter 'user :name "Eudoxia") (filter 'user (:> :age 21)) ;; Returns a single object (single 'user :name "Eudoxia") ;; Throws an error if this returns more ;; than one object (single! 'user (:< age 35)) ;; t if a match exists, nil otherwise (exists 'user :name "Eudoxia") ;; If this record doesn't exist create it (get-or-create 'user :name "Eudoxia" :age 19)
;;;; Automatic (with-transaction () (let ((restaurants (filter 'restaurant ...))) (loop for restaurant in restaurants do ... (save restaurant)))) ;;;; Manual (progn (begin-transaction) (let ((restaurants (filter 'restaurant ...))) (loop for restaurant in restaurants do ... (save restaurant))) (commit))
;;;; initial-data.lisp (app:user (:name "eudoxia" :groups (:admin :staff)) (:name "joe" :groups (:admin))) (app:company (:name "Initech" :city "Denver")) ;;;; myapp.asd (asdf:defsystem myapp :defsystem-depends-on (:clos-fixtures) :components ((:module "src" :components ((:fixture "initial-data")))))
(definflate (stamp 'timestamp) ;; Inflate a timestamp value ;; into a timestamp object (local-time:universal-to-timestamp stamp)) (defdeflate (stamp local-time:timestamp) ;; Deflate a timestamp object ;; into a string (local-time:format-timestring nil stamp))
I'm in the process of moving the documentation to Codex, so for now you can check it out in the website.
Copyright (c) 2013 Fernando Borretti (email@example.com)
Released under the MIT license.