src/lisp-on-lines.lisp

   1 (in-package :lisp-on-lines)
   2
   3 ;;;; *LoL Entry points
   4 ;;;;
   5
   6 ;;;; This file contains the high level functions and macros
   7 ;;;; that are part of LoL proper, that is to say, not Mewa
   8 ;;;; or Meta-Model.
   9
  10
  11
  12 (defmacro action (args &body body)
  13   `(lambda ,args
  14     (with-call/cc
  15       ,@body)))
  16
  17 ;;;; ** Initialisation
  18 (defmethod find-default-attributes ((object t))
  19   "return the default attributes for a given object using the meta-model's meta-data"
  20   (append (mapcar #'(lambda (s)
  21                       (cons (car s)
  22                             (gen-pslot
  23                              (if (meta-model:foreign-key-p object (car s))
  24                                  'foreign-key
  25                                  (cadr s))
  26                              (string (car s)) (car s))))
  27                   (meta-model:list-slot-types object))
  28           (mapcar #'(lambda (s)
  29                       (cons s (append (gen-pslot 'has-many (string s) s)
  30                                       `(:presentation
  31                                         (make-presentation
  32                                          ,object
  33                                          :type :one-line)))))
  34                   (meta-model:list-has-many object))
  35           (find-default-presentation-attribute-definitions)))
  36
  37 (defmethod set-default-attributes ((object t))
  38   "Set the default attributes for MODEL"
  39   (clear-attributes object)
  40   (mapcar #'(lambda (x)
  41               (setf (find-attribute object (car x)) (cdr x)))
  42           (find-default-attributes object)))
  43
  44 ;;;; This automagically initialises any meta model
  45
  46 (eval-when (:compile-toplevel :load-toplevel :execute)
  47   (defmethod meta-model::generate-base-class-expander :after (meta-model name args)
  48     (set-default-attributes name)))
  49
  50 ;;;; The following macros are used to initialise a set of database tables as LoL objects.
  51
  52 (eval-when (:compile-toplevel :load-toplevel :execute)
  53   (defun generate-define-view-for-table (table)
  54     "
  55 Generates a form that, when evaluated, initialises the given table as an lol object.
  56 This involves creating a meta-model, a clsql view-class, and the setting up the default attributes for a mewa presentation"
  57
  58     `(progn
  59        (def-view-class-from-table ,table)
  60        (set-default-attributes (quote ,(meta-model::sql->sym table))))))
  61
  62 (defmacro define-view-for-table (&rest tables)
  63   " expand to a form which initialises TABLES for use with LOL"
  64   `(progn
  65     ,@(loop for tbl in tables collect (generate-define-view-for-table tbl))
  66     (values)))
  67
  68 (defmacro define-views-for-database ()
  69   "expands to init-i-f-t using the listing of tables provided by meta-model"
  70   `(define-view-for-table ,@(meta-model::list-tables)))
  71
  72
  73 (defmethod find-slots-of-type (model &key (type 'string)
  74                               (types '((string)) types-supplied-p))
  75   "returns a list of slots matching TYPE, or matching any of TYPES"
  76   (let (ty)
  77     (if types-supplied-p
  78         (setf ty types)
  79         (setf ty (list type)))
  80     (remove nil (mapcar #'(lambda (st) (when (member (second st) ty)
  81                                          (first st)))
  82              (lisp-on-lines::list-slot-types model)))))
  83
  84
  85
  86
  87
  88
  89 (defmethod word-search (class-name slots search-terms
  90                         &key (limit 10) (where (sql-and t)))
  91   (select class-name
  92           :where (sql-and
  93                   where
  94                   (word-search-where class-name slots search-terms :format-string "~a%"))
  95                            :flatp t
  96                            :limit limit))
  97
  98
  99 (defmethod word-search (class-name slots (s string) &rest args)
 100   (apply #'word-search class-name slots (list s) args))
 101
 102 (defmethod word-search-where (class-name slots search-terms &key (format-string "%~a%"))
 103   (sql-or
 104    (mapcar #'(lambda (term)
 105                (apply #'sql-or
 106                       (mapcar #'(lambda (slot)
 107                                   (sql-uplike
 108                                    (sql-slot-value class-name slot)
 109                                    (format nil format-string  term)))
 110                               slots)))
 111            search-terms)))
 112
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 114