view implementations/midi-db/methods.lisp @ 310:f99fd6a7bbfc

Add midi-db.

Ignore-this: c6f4fc32efa4453ddbdc478793eedd52

A basic implementation for working with MIDI files stored in the database.

It is a test case for `versioned' data, but only partially implemented at the moment.

darcs-hash:20100223152703-16a00-4388d2720907d777a1c6c6b3a010885ce0fe06a7.gz

(cl:in-package #:amuse-midi-db)

(defmethod list-collections ((package (eql *package*)) &key
			     compositions (stream *standard-output*))
  "FIXME: better formatting."
  (let ((collection-rows (%get-all-collection-headers)))
    (flet ((print-separator (&optional (columns 77))
	     (format stream "~% ~A"
		     (make-sequence 'string columns :initial-element #\-))))
      (loop for collection-row in collection-rows
	 do (destructuring-bind (collection-id collection-name description)
		collection-row
	      (format stream "~%Collection-id: ~A~% Name: ~A~% Description: ~A~%"
		      collection-id collection-name description)
	      (when compositions
		(list-compositions package
				   :collection-identifier
				   (make-midi-db-collection-identifier
				    collection-id))))
	 do (print-separator)))))

(defmethod list-compositions ((package (eql *package*)) &key
			      collection-identifier
			      (stream *standard-output*))
  (let ((composition-headers
	 (if collection-identifier
	     (%get-all-collection-composition-headers
	      collection-identifier)
	     (%get-all-composition-headers))))
    (loop for composition-header in composition-headers
       do (destructuring-bind (collection-id filename timebase start
					      duration owner version
					      creation-timestamp
					      deletion-timestamp)
	      composition-header
	    (format stream "~%Collection-id: ~A filename: ~A timebase: ~A start: ~A duration: ~A owner: ~A version: ~A created: ~A deleted: ~A~%"
		    collection-id filename timebase start duration owner
		    version creation-timestamp deletion-timestamp)))))