1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
5 ;;;; Name: loop-extension.lisp
6 ;;;; Purpose: Extensions to the Loop macro for CLSQL
8 ;;;; Copyright (c) 2001-2006 Kevin Rosenberg and (c) 1999-2001 Pierre R. Mai
10 ;;;; *************************************************************************
12 (in-package #:clsql-sys)
15 (eval-when (:compile-toplevel :load-toplevel :execute)
16 (defpackage #:ansi-loop
17 (:import-from #+sbcl #:sb-loop #+allegro #:excl
19 #:*loop-ansi-universe*
23 (defun ansi-loop::loop-gentemp (&optional (pref 'loopva-))
24 (gensym (string pref)))
27 (eval-when (:compile-toplevel :load-toplevel :execute)
28 (when (find-package "ANSI-LOOP") (push :clisp-aloop cl:*features*)))
30 #+(or allegro clisp-aloop cmu openmcl sbcl scl)
31 (defun loop-record-iteration-path (variable data-type prep-phrases)
34 (loop for (prep . rest) in prep-phrases
39 (error 'clsql:sql-user-error
42 "Duplicate OF or IN iteration path: ~S."
44 (setq in-phrase rest))
47 (error 'clsql:sql-user-error
50 "Duplicate FROM iteration path: ~S."
52 (setq from-phrase rest))
54 (error 'clsql:sql-user-error
56 (format nil"Unknown preposition: ~S." prep)))))
58 (error 'clsql:sql-user-error
59 :message "Missing OF or IN iteration path."))
61 (setq from-phrase '(*default-database*)))
63 (unless (consp variable)
64 (setq variable (list variable)))
68 ((and (consp (first in-phrase))
69 (string-equal "sql-query" (symbol-name (caar in-phrase)))
70 (consp (second (first in-phrase)))
71 (eq 'quote (first (second (first in-phrase))))
72 (symbolp (second (second (first in-phrase)))))
74 (let ((result-var (ansi-loop::loop-gentemp
75 'loop-record-result-))
76 (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
77 `(((,variable nil ,@(and data-type (list data-type)))
78 (,result-var (query ,(first in-phrase)))
83 (if (null ,result-var)
86 (setq ,step-var (first ,result-var))
87 (setq ,result-var (rest ,result-var))
92 (if (null ,result-var)
95 (setq ,step-var (first ,result-var))
96 (setq ,result-var (rest ,result-var))
98 (,variable ,step-var))))
101 (let ((query-var (ansi-loop::loop-gentemp 'loop-record-))
102 (db-var (ansi-loop::loop-gentemp 'loop-record-database-))
103 (result-set-var (ansi-loop::loop-gentemp
104 'loop-record-result-set-))
105 (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
106 (push `(when ,result-set-var
107 (database-dump-result-set ,result-set-var ,db-var))
108 ansi-loop::*loop-epilogue*)
109 `(((,variable nil ,@(and data-type (list data-type)))
110 (,query-var ,(first in-phrase))
111 (,db-var ,(first from-phrase))
114 ((multiple-value-bind (%rs %cols)
115 (database-query-result-set ,query-var ,db-var :result-types :auto)
116 (setq ,result-set-var %rs ,step-var (make-list %cols))))
119 (not (database-store-next-row ,result-set-var ,db-var ,step-var))
120 (,variable ,step-var)
121 (not ,result-set-var)
123 (not (database-store-next-row ,result-set-var ,db-var ,step-var))
124 (,variable ,step-var)))))))
126 #+(or allegro clisp-aloop cmu openmcl sbcl scl)
127 (ansi-loop::add-loop-path '(record records tuple tuples)
128 'loop-record-iteration-path
129 ansi-loop::*loop-ansi-universe*
130 :preposition-groups '((:of :in) (:from))
131 :inclusive-permitted nil)
135 (cl-user::define-loop-method (loop::record loop::records loop::tuple loop::tuples)
137 (loop::in loop::of loop::from))
140 (defun clsql-loop-method (method-name iter-var iter-var-data-type
141 prep-phrases inclusive? allowed-preps
142 method-specific-data)
143 (declare (ignore method-name iter-var-data-type inclusive? allowed-preps method-specific-data))
144 (let ((in-phrase nil)
146 (loop for (prep . rest) in prep-phrases
149 ((or (eq prep 'loop::in) (eq prep 'loop::of))
151 (error 'clsql:sql-user-error
153 (format nil "Duplicate OF or IN iteration path: ~S."
155 (setq in-phrase rest))
156 ((eq prep 'loop::from)
158 (error 'clsql:sql-user-error
160 (format nil "Duplicate FROM iteration path: ~S."
162 (setq from-phrase rest))
164 (error 'clsql:sql-user-error
165 :message (format nil "Unknown preposition: ~S." prep)))))
167 (error 'clsql:sql-user-error
168 :message "Missing OF or IN iteration path."))
170 (setq from-phrase '(clsql:*default-database*)))
172 (unless (consp iter-var)
173 (setq iter-var (list iter-var)))
177 ((and (consp in-phrase)
178 (string-equal "sql-query" (symbol-name (car in-phrase)))
179 (consp (second in-phrase))
180 (eq 'quote (first (second in-phrase)))
181 (symbolp (second (second in-phrase))))
183 (let ((result-var (gensym "LOOP-RECORD-RESULT-"))
184 (step-var (gensym "LOOP-RECORD-STEP-")))
188 `(,@(mapcar (lambda (v) `(,v nil)) iter-var)
189 (,result-var (clsql:query ,in-phrase))
194 `((if (null ,result-var)
197 (setq ,step-var (first ,result-var))
198 (setq ,result-var (rest ,result-var))
200 `(,iter-var ,step-var)
201 `((if (null ,result-var)
204 (setq ,step-var (first ,result-var))
205 (setq ,result-var (rest ,result-var))
207 `(,iter-var ,step-var)
213 (let ((query-var (gensym "LOOP-RECORD-"))
214 (db-var (gensym "LOOP-RECORD-DATABASE-"))
215 (result-set-var (gensym "LOOP-RECORD-RESULT-SET-"))
216 (step-var (gensym "LOOP-RECORD-STEP-")))
220 `(,@(mapcar (lambda (v) `(,v nil)) iter-var)
221 (,query-var ,in-phrase)
222 (,db-var ,(first from-phrase))
223 (,result-set-var nil)
225 `((multiple-value-bind (%rs %cols)
226 (clsql-sys:database-query-result-set ,query-var ,db-var :result-types :auto)
227 (setq ,result-set-var %rs ,step-var (make-list %cols))))
230 `((unless (clsql-sys:database-store-next-row ,result-set-var ,db-var ,step-var)
231 (when ,result-set-var
232 (clsql-sys:database-dump-result-set ,result-set-var ,db-var))
234 `(,iter-var ,step-var)
235 `((unless (clsql-sys:database-store-next-row ,result-set-var ,db-var ,step-var)
236 (when ,result-set-var
237 (clsql-sys:database-dump-result-set ,result-set-var ,db-var))
239 `(,iter-var ,step-var)
245 (eval-when (:compile-toplevel :load-toplevel :execute)
246 (setq cl:*features* (delete :clisp-aloop cl:*features*)))