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) 2001-2004 Kevin Rosenberg and (c) 1999-2001 Pierre R. Mai
11 ;;;; *************************************************************************
13 (in-package #:cl-user)
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)))
27 #+(or cmu scl sbcl openmcl allegro)
28 (defun loop-record-iteration-path (variable data-type prep-phrases)
31 (loop for (prep . rest) in prep-phrases
36 (error 'clsql:sql-user-error
39 "Duplicate OF or IN iteration path: ~S."
41 (setq in-phrase rest))
44 (error 'clsql:sql-user-error
47 "Duplicate FROM iteration path: ~S."
49 (setq from-phrase rest))
51 (error 'clsql:sql-user-error
53 (format nil"Unknown preposition: ~S." prep)))))
55 (error 'clsql:sql-user-error
56 :message "Missing OF or IN iteration path."))
58 (setq from-phrase '(clsql-sys:*default-database*)))
60 (unless (consp variable)
61 (setq variable (list variable)))
65 ((and (consp (first in-phrase))
66 (string-equal "sql-query" (symbol-name (caar in-phrase)))
67 (consp (second (first in-phrase)))
68 (eq 'quote (first (second (first in-phrase))))
69 (symbolp (second (second (first in-phrase)))))
71 (let ((result-var (ansi-loop::loop-gentemp
72 'loop-record-result-))
73 (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
74 `(((,variable nil ,@(and data-type (list data-type)))
75 (,result-var (clsql-sys:query ,(first in-phrase)))
80 (if (null ,result-var)
83 (setq ,step-var (first ,result-var))
84 (setq ,result-var (rest ,result-var))
89 (if (null ,result-var)
92 (setq ,step-var (first ,result-var))
93 (setq ,result-var (rest ,result-var))
95 (,variable ,step-var))))
98 (let ((query-var (ansi-loop::loop-gentemp 'loop-record-))
99 (db-var (ansi-loop::loop-gentemp 'loop-record-database-))
100 (result-set-var (ansi-loop::loop-gentemp
101 'loop-record-result-set-))
102 (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
103 (push `(when ,result-set-var
104 (clsql-sys:database-dump-result-set ,result-set-var ,db-var))
105 ansi-loop::*loop-epilogue*)
106 `(((,variable nil ,@(and data-type (list data-type)))
107 (,query-var ,(first in-phrase))
108 (,db-var ,(first from-phrase))
109 (,result-set-var nil)
111 ((multiple-value-bind (%rs %cols)
112 (clsql-sys:database-query-result-set ,query-var ,db-var :result-types :auto)
113 (setq ,result-set-var %rs ,step-var (make-list %cols))))
116 (not (clsql-sys:database-store-next-row ,result-set-var ,db-var ,step-var))
117 (,variable ,step-var)
118 (not ,result-set-var)
120 (not (clsql-sys:database-store-next-row ,result-set-var ,db-var ,step-var))
121 (,variable ,step-var)))))))
123 #+(or cmu scl sbcl openmcl allegro)
124 (ansi-loop::add-loop-path '(record records tuple tuples)
125 'loop-record-iteration-path
126 ansi-loop::*loop-ansi-universe*
127 :preposition-groups '((:of :in) (:from))
128 :inclusive-permitted nil)
131 (eval-when (:compile-toplevel :load-toplevel :execute)
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 (clsql-sys:database-query-result-set ,query-var ,db-var :result-types :auto)
226 (setq ,result-set-var %rs ,step-var (make-list %cols))))
229 `((unless (clsql-sys:database-store-next-row ,result-set-var ,db-var ,step-var)
230 (when ,result-set-var
231 (clsql-sys:database-dump-result-set ,result-set-var ,db-var))
233 `(,iter-var ,step-var)
234 `((unless (clsql-sys:database-store-next-row ,result-set-var ,db-var ,step-var)
235 (when ,result-set-var
236 (clsql-sys:database-dump-result-set ,result-set-var ,db-var))
238 `(,iter-var ,step-var)