Commit | Line | Data |
---|---|---|
579597e3 | 1 | (in-package :meta-model) |
2 | ||
3 | (eval-when (:compile-toplevel :load-toplevel :execute) | |
4 | (use-package :clsql)) | |
5 | ||
6 | (export 'def-meta-model-from-table) | |
7 | (export 'def-meta-models) | |
8 | (export 'def-view-class/meta) | |
9 | (export 'list-base-classes) | |
10 | ||
47a72814 | 11 | |
e9454185 | 12 | (defmethod sync-instance ((view clsql:standard-db-object) &key (fill-gaps-only-p nil) (database *default-database*)) |
47a72814 | 13 | (labels ((sym->sql (sym) (string-downcase (substitute #\_ #\- (string sym)))) |
14 | (get-def (slot) (caar (query | |
15 | (format nil "SELECT DISTINCT adsrc from pg_attrdef join pg_attribute on attnum = adnum where adrelid = (select oid from pg_class where relname = '~A') and attname = '~A'" (sym->sql (class-name (class-of view))) (sym->sql slot))))) | |
a6644385 | 16 | (get-default-value (slot) |
17 | (let ((def (get-def slot))) | |
18 | (if def | |
9d6c69fb | 19 | (caar (query (format nil "SELECT ~A" def))))))) |
47a72814 | 20 | |
21 | (dolist (slot (list-slots view)) | |
22 | (when (and (primary-key-p view slot) | |
23 | (or (not (slot-boundp view slot)) | |
24 | (equal (slot-value view slot) nil))) | |
9d6c69fb DC |
25 | (setf (slot-value view slot) (get-default-value slot)) |
26 | (when (and (primary-key-p view slot) | |
27 | (not (slot-value view slot)) | |
e9454185 | 28 | (not fill-gaps-only-p)) |
9d6c69fb | 29 | (error "No default value for primary key : ~A" slot)))) |
e9454185 | 30 | (when fill-gaps-only-p |
9d6c69fb DC |
31 | (update-objects-joins (list view)) |
32 | (return-from sync-instance)) | |
33 | (update-records-from-instance view :database database) | |
34 | (update-instance-from-records view :database database) | |
68a53dce DC |
35 | (update-objects-joins (list view))) |
36 | ||
37 | ;; return the modified and hopefully now persistent object | |
38 | view) | |
47a72814 | 39 | |
40 | ||
41 | ||
579597e3 | 42 | (defparameter *clsql-base-classes* (list) ) |
43 | ||
44 | (defmethod list-base-classes ((type (eql :clsql))) | |
45 | *clsql-base-classes*) | |
46 | ||
42d345c3 | 47 | (defmethod generate-base-class-definition ((base-type (eql :clsql)) (model meta-model-class) (name t) (args t)) |
579597e3 | 48 | `(def-view-class ,name () |
49 | ,(meta-model.metadata model))) | |
50 | ||
42d345c3 | 51 | (defmethod generate-base-class-definition :after ((base-type (eql :clsql)) (model meta-model-class) (name t) (args t)) |
579597e3 | 52 | (unless (member name *clsql-base-classes*) |
53 | (setf *clsql-base-classes* (cons name *clsql-base-classes*)))) | |
54 | ||
1dd821b9 | 55 | (defparameter *sql-type-map* '((:INT4 integer) (:BOOL boolean) (:TEXT string) (:VARCHAR string) (:TIMESTAMP clsql-sys::wall-time) (:NUMERIC number)(:BYTEA string))) |
579597e3 | 56 | |
57 | (defun gen-type (table column) | |
58 | (cadr (assoc | |
59 | (cadr (assoc | |
60 | column | |
61 | (list-attribute-types table) | |
62 | :test #'equalp )) | |
63 | *sql-type-map*))) | |
64 | ||
65 | (defun sql->sym (name &optional (package nil)) | |
66 | (flet ((xform (x) | |
67 | (string-upcase (substitute #\- #\_ x)))) | |
68 | (if package | |
69 | (intern (xform (string name)) package) | |
70 | (intern (xform (string name)))))) | |
71 | ||
9d6c69fb | 72 | (defun table->slots (table pkey &optional (accesor-prefix table) (prefix-all-p nil)) |
579597e3 | 73 | (mapcar |
74 | #'(lambda (col) | |
9d6c69fb DC |
75 | (flet ((accessor-name (col) |
76 | (let ((name (sql->sym col))) | |
77 | (if (or prefix-all-p | |
78 | (and (fboundp name) | |
79 | (eq (type-of (symbol-function name)) 'function))) | |
80 | (sql->sym (concatenate 'string | |
81 | (string accesor-prefix) "-" col)) | |
82 | name)))) | |
83 | ||
84 | `(,(sql->sym col) | |
85 | :accessor ,(accessor-name col) | |
86 | :initarg ,(sql->sym col "KEYWORD") | |
87 | :type ,(gen-type table col) | |
88 | :db-kind | |
89 | ,(if (equalp col pkey) | |
90 | `:key | |
91 | `:base)))) | |
579597e3 | 92 | (list-attributes table))) |
93 | ||
94 | (defun view-class-definition-list () | |
95 | (mapcar #'(lambda (x) `(def-meta-model-from-table ,x)) | |
96 | (list-tables))) | |
97 | ||
98 | (defmacro def-meta-models () | |
99 | (let ((defs (view-class-definition-list))) | |
100 | `(progn ,@defs))) | |
101 | ||
102 | ||
579597e3 | 103 | (defun get-pkeys () |
104 | (let ((keys '())) | |
105 | (dolist (row (get-pkeys-query)) | |
106 | (setf keys (acons (car row) (list (cadr row)) keys))) | |
107 | keys)) | |
108 | ||
109 | (defun get-pkeys-query() | |
110 | (query | |
111 | "SELECT pg_class.relname, pg_attribute.attname, pg_catalog.quote_ident(conname) AS constraint_n | |
112 | , pg_catalog.pg_get_indexdef(d.objid) AS constraint_definition | |
113 | , CASE | |
114 | WHEN contype = 'p' THEN | |
115 | 'PRIMARY KEY' | |
116 | ELSE | |
117 | 'UNIQUE' | |
118 | END as constraint_type | |
119 | FROM | |
120 | pg_class, pg_attribute, | |
121 | pg_catalog.pg_constraint AS c | |
122 | JOIN pg_catalog.pg_depend AS d ON (d.refobjid = c.oid) | |
123 | WHERE contype IN ('p', 'u') | |
124 | AND deptype = 'i' | |
125 | and conrelid = pg_class.oid | |
126 | and pg_attribute.attnum = ANY (c.conkey) | |
127 | and pg_attribute.attrelid = pg_class.oid")) | |
128 | ||
129 | ;;here is how this works | |
130 | ;;from the postgres system tables we get | |
131 | ;;list of all the has-a relationships. | |
132 | ;;the inverse of a has-a is an implicit has-many | |
133 | ;;and any relation having more than one foreign key | |
134 | ;;is a join table hosting a many-to-many relationship | |
135 | ||
136 | (defun get-fkey-explosions () | |
137 | (let ((key-table (get-fkey-explosions-query)) | |
138 | (keys '())) | |
139 | (dolist (row key-table) | |
140 | (setf row (mapcar #'(lambda (x) | |
141 | (sql->sym x)) | |
142 | row)) | |
143 | ;;this one does the has-a | |
144 | (setf keys (acons (car row) (gen-has-a row) | |
145 | keys)) | |
146 | ;;the inverse of the previous represents a has-many. | |
147 | (setf keys | |
148 | (acons (fourth row) (gen-has-many row) | |
149 | keys)) | |
150 | ||
151 | ;;many-to-many | |
152 | (dolist (mrow | |
153 | (remove-if #'(lambda (r) (or (not (equal (car row) (car r))) | |
154 | (equal (last row) (last r)))) | |
155 | (mapcar #'(lambda (x) | |
156 | (mapcar #'sql->sym x)) | |
157 | key-table))) | |
158 | (setf keys (acons (fourth row) | |
159 | (gen-many-to-many mrow (third row) (second row)) | |
160 | keys)))) | |
161 | keys )) | |
162 | ||
163 | ||
164 | (defun get-fkey-explosions-query () | |
165 | ;;these query's are a mess, i don't even know how they work :) | |
166 | (query " | |
167 | SELECT pg_class.relname, | |
168 | pg_attribute.attname, | |
169 | fa.attname , | |
170 | f.relname | |
171 | FROM pg_class, | |
172 | pg_constraint, | |
173 | pg_attribute, | |
174 | pg_class as f , | |
175 | pg_attribute as fa | |
176 | WHERE pg_class.relname in (select tablename from pg_tables where schemaname = 'public') | |
177 | AND pg_class.oid = pg_constraint.conrelid | |
178 | AND pg_attribute.attnum = ANY (pg_constraint.conkey) | |
179 | AND pg_attribute.attrelid = pg_class.oid | |
180 | AND f.oid = confrelid | |
181 | AND fa.attrelid = f.oid | |
182 | AND fa.attnum = ANY (pg_constraint.confkey)")) | |
183 | ||
184 | ||
185 | ;; i chose keyword args here so as to make the code more understandable. | |
186 | ;; it didn't really work. | |
187 | (defun gen-join-slot (&key name home-key foreign-key join-class (set nil)) | |
188 | `(,(intern name) | |
189 | :accessor ,(intern name) | |
190 | :db-kind :join | |
191 | :db-info (:join-class ,join-class | |
192 | :home-key ,home-key | |
193 | :foreign-key ,foreign-key | |
194 | :set ,set))) | |
195 | ||
196 | (defun gen-has-a (row) | |
197 | (gen-join-slot | |
198 | :name | |
199 | (format nil "~A->~A" (string (car row))(string (second row))) | |
200 | :home-key (second row) | |
201 | :foreign-key (third row) | |
202 | :join-class (fourth row))) | |
203 | ||
204 | (defun gen-has-many (row) | |
205 | (gen-join-slot | |
206 | :name | |
207 | (format nil "~A->~A" (string (car row))(string (second row))) | |
208 | :home-key (third row) | |
209 | :foreign-key (second row) | |
210 | :join-class (car row) | |
211 | :set t)) | |
212 | ||
213 | (defun gen-many-to-many (row home-key foreign-key) | |
799ee65d | 214 | (let ((name (sql->sym (string-upcase (format nil "~A<-~A->~A" (string (car row)) (string foreign-key) (string (second row))))))) |
579597e3 | 215 | (setf row (mapcar #'sql->sym row)) |
216 | `(,name | |
217 | :accessor ,name | |
218 | :db-kind :join | |
219 | :db-info (:join-class ,(car row) | |
42d345c3 | 220 | :home-key ,home-key |
579597e3 | 221 | :foreign-key ,foreign-key |
222 | :target-slot ,name | |
223 | :set t)))) | |
224 | ||
9d6c69fb DC |
225 | (defmethod update-records-from-instance :before ((view clsql::standard-db-object) &key database) |
226 | (declare (ignorable database)) | |
227 | (labels ((sym->sql (sym) (string-downcase (substitute #\_ #\- (string sym)))) | |
228 | (get-def (slot) (caar (query | |
229 | (format nil "SELECT DISTINCT adsrc from pg_attrdef join pg_attribute on attnum = adnum where adrelid = (select oid from pg_class where relname = '~A') and attname = '~A'" (sym->sql (class-name (class-of view))) (sym->sql slot))))) | |
230 | (get-default-value (slot) (caar (query (format nil "SELECT ~A" (get-def slot)))))) | |
231 | ||
232 | (dolist (slot (list-slots view)) | |
233 | (when (and (primary-key-p view slot) | |
234 | (or (not (slot-boundp view slot)) | |
235 | (equal (slot-value view slot) nil))) | |
236 | (setf (slot-value view slot) (get-default-value slot)))))) | |
237 | ||
238 | ;;;; | |
239 | ||
240 | (defmacro def-view-class/meta (name supers slots &rest args) | |
241 | "Create and instrument CLSQL view-class NAME and | |
4628b433 DC |
242 | appropriate meta-model class its default name is %NAME-meta-model." |
243 | ||
42d345c3 DC |
244 | `(progn |
245 | (let* ((m (define-meta-model ,name ,supers ,slots ,args))) | |
246 | (setf (meta-model.base-type m) :clsql) | |
247 | (eval (generate-base-class-expander m ',name ',args))))) | |
9d6c69fb | 248 | |
42d345c3 DC |
249 | (defmacro def-view-class-from-table (table &optional |
250 | (name (clsql-pg-introspect::intern-normalize-for-lisp table))) | |
579597e3 | 251 | "takes the name of a table as a string and |
252 | creates a clsql view-class" | |
42d345c3 DC |
253 | `(clsql-pg-introspect:gen-view-class ,table |
254 | :classname ,name | |
255 | :generate-joins :all | |
256 | :definer def-view-class/meta)) | |
9d6c69fb | 257 | |
f1ce8b6e DC |
258 | |
259 | (defmethod prepare-slot-name-for-select ((i standard-db-object) slot-name) | |
260 | (clsql:sql-expression :attribute slot-name)) | |
261 | ||
9d6c69fb DC |
262 | (def-compare-expr standard-db-object expr-= sql-=) |
263 | (def-compare-expr standard-db-object expr-< sql-<) | |
264 | (def-compare-expr standard-db-object expr-> sql->) | |
f5e28145 DC |
265 | (def-compare-expr standard-db-object expr-ends-with sql-uplike :value-format "%~A") |
266 | (def-compare-expr standard-db-object expr-starts-with sql-uplike :value-format "~A%") | |
267 | (def-compare-expr standard-db-object expr-contains sql-uplike :value-format "%~A%") | |
9d6c69fb DC |
268 | |
269 | (def-logical-expr standard-db-object expr-and #'sql-and) | |
579597e3 | 270 | |
9d6c69fb | 271 | (def-logical-expr standard-db-object expr-or #'sql-or) |
579597e3 | 272 | |
9d6c69fb | 273 | (def-logical-expr standard-db-object expr-not #'sql-not) |
579597e3 | 274 | |
9d6c69fb DC |
275 | (defmethod select-instances ((instance standard-db-object) &rest query) |
276 | (unless (keywordp (car query)) | |
277 | (setf query (cons :where query))) | |
278 | (apply #'select (class-name (class-of instance)) :flatp t query)) |