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
11 ;;;; *************************************************************************
13 (in-package #:clsql-sys)
16 (eval-when (:compile-toplevel :load-toplevel :execute)
17 (defpackage #:ansi-loop
18 (:import-from #+sbcl #:sb-loop #+allegro #:excl
20 #:*loop-ansi-universe*
24 (defun ansi-loop::loop-gentemp (&optional (pref 'loopva-))
25 (gensym (string pref)))
28 (eval-when (:compile-toplevel :load-toplevel :execute)
29 (when (find-package "ANSI-LOOP") (push :clisp-aloop cl:*features*)))
31 #+(or allegro clisp-aloop cmu openmcl sbcl scl)
32 (defun loop-record-iteration-path (variable data-type prep-phrases)
35 (loop for (prep . rest) in prep-phrases
40 (error 'clsql:sql-user-error
43 "Duplicate OF or IN iteration path: ~S."
45 (setq in-phrase rest))
48 (error 'clsql:sql-user-error
51 "Duplicate FROM iteration path: ~S."
53 (setq from-phrase rest))
55 (error 'clsql:sql-user-error
57 (format nil"Unknown preposition: ~S." prep)))))
59 (error 'clsql:sql-user-error
60 :message "Missing OF or IN iteration path."))
62 (setq from-phrase '(*default-database*)))
64 (unless (consp variable)
65 (setq variable (list variable)))
69 ((and (consp (first in-phrase))
70 (string-equal "sql-query" (symbol-name (caar in-phrase)))
71 (consp (second (first in-phrase)))
72 (eq 'quote (first (second (first in-phrase))))
73 (symbolp (second (second (first in-phrase)))))
75 (let ((result-var (ansi-loop::loop-gentemp
76 'loop-record-result-))
77 (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
78 `(((,variable nil ,@(and data-type (list data-type)))
79 (,result-var (query ,(first in-phrase)))
84 (if (null ,result-var)
87 (setq ,step-var (first ,result-var))
88 (setq ,result-var (rest ,result-var))
93 (if (null ,result-var)
96 (setq ,step-var (first ,result-var))
97 (setq ,result-var (rest ,result-var))
99 (,variable ,step-var))))
102 (let ((query-var (ansi-loop::loop-gentemp 'loop-record-))
103 (db-var (ansi-loop::loop-gentemp 'loop-record-database-))
104 (result-set-var (ansi-loop::loop-gentemp
105 'loop-record-result-set-))
106 (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
107 (push `(when ,result-set-var
108 (database-dump-result-set ,result-set-var ,db-var))
109 ansi-loop::*loop-epilogue*)
110 `(((,variable nil ,@(and data-type (list data-type)))
111 (,query-var ,(first in-phrase))
112 (,db-var ,(first from-phrase))
113 (,result-set-var nil)
115 ((multiple-value-bind (%rs %cols)
116 (database-query-result-set ,query-var ,db-var :result-types :auto)
117 (setq ,result-set-var %rs ,step-var (make-list %cols))))
120 (not (database-store-next-row ,result-set-var ,db-var ,step-var))
121 (,variable ,step-var)
122 (not ,result-set-var)
124 (not (database-store-next-row ,result-set-var ,db-var ,step-var))
125 (,variable ,step-var)))))))
127 #+(or allegro clisp-aloop cmu openmcl sbcl scl)
128 (ansi-loop::add-loop-path '(record records tuple tuples)
129 'loop-record-iteration-path
130 ansi-loop::*loop-ansi-universe*
131 :preposition-groups '((:of :in) (:from))
132 :inclusive-permitted nil)
135 (cl-user::define-loop-method (record records tuple tuples) clsql-loop-method
139 (defun clsql-loop-method (method-name iter-var iter-var-data-type
140 prep-phrases inclusive? allowed-preps
141 method-specific-data)
142 (declare (ignore method-name inclusive? allowed-preps method-specific-data))
143 (let ((in-phrase nil)
145 (loop for (prep . rest) in prep-phrases
148 ((or (eq prep 'in) (eq prep 'of))
150 (error 'clsql:sql-user-error
152 (format nil "Duplicate OF or IN iteration path: ~S."
154 (setq in-phrase rest))
157 (error 'clsql:sql-user-error
159 (format nil "Duplicate FROM iteration path: ~S."
161 (setq from-phrase rest))
163 (error 'clsql:sql-user-error
164 :message (format nil "Unknown preposition: ~S." prep)))))
166 (error 'clsql:sql-user-error
167 :message "Missing OF or IN iteration path."))
169 (setq from-phrase '(clsql:*default-database*)))
171 (unless (consp iter-var)
172 (setq iter-var (list iter-var)))
176 ((and (consp in-phrase)
177 (string-equal "sql-query" (symbol-name (car in-phrase)))
178 (consp (second in-phrase))
179 (eq 'quote (first (second in-phrase)))
180 (symbolp (second (second in-phrase))))
182 (let ((result-var (gensym "LOOP-RECORD-RESULT-"))
183 (step-var (gensym "LOOP-RECORD-STEP-")))
187 `(,@(mapcar (lambda (v) `(,v nil)) iter-var)
188 (,result-var (clsql:query ,in-phrase))
193 `((if (null ,result-var)
196 (setq ,step-var (first ,result-var))
197 (setq ,result-var (rest ,result-var))
199 `(,iter-var ,step-var)
200 `((if (null ,result-var)
203 (setq ,step-var (first ,result-var))
204 (setq ,result-var (rest ,result-var))
206 `(,iter-var ,step-var)
212 (let ((query-var (gensym "LOOP-RECORD-"))
213 (db-var (gensym "LOOP-RECORD-DATABASE-"))
214 (result-set-var (gensym "LOOP-RECORD-RESULT-SET-"))
215 (step-var (gensym "LOOP-RECORD-STEP-")))
219 `(,@(mapcar (lambda (v) `(,v nil)) iter-var)
220 (,query-var ,in-phrase)
221 (,db-var ,(first from-phrase))
222 (,result-set-var nil)
224 `((multiple-value-bind (%rs %cols)
225 (database-query-result-set ,query-var ,db-var :result-types :auto)
226 (setq ,result-set-var %rs ,step-var (make-list %cols))))
229 `((unless (database-store-next-row ,result-set-var ,db-var ,step-var)
230 (when ,result-set-var
231 (database-dump-result-set ,result-set-var ,db-var))
233 `(,iter-var ,step-var)
234 `((unless (database-store-next-row ,result-set-var ,db-var ,step-var)
235 (when ,result-set-var
236 (database-dump-result-set ,result-set-var ,db-var))
238 `(,iter-var ,step-var)
244 (eval-when (:compile-toplevel :load-toplevel :execute)
245 (setq cl:*features* (delete :clisp-aloop cl:*features*)))