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
21 #:*loop-ansi-universe*
25 (defun ansi-loop::loop-gentemp (&optional (pref 'loopva-))
26 (gensym (string pref)))
28 #+(or cmu scl sbcl openmcl allegro)
29 (defun loop-record-iteration-path (variable data-type prep-phrases)
32 (loop for (prep . rest) in prep-phrases
37 (ansi-loop::loop-error
38 "Duplicate OF or IN iteration path: ~S." (cons prep rest)))
39 (setq in-phrase rest))
42 (ansi-loop::loop-error
43 "Duplicate FROM iteration path: ~S." (cons prep rest)))
44 (setq from-phrase rest))
46 (ansi-loop::loop-error
47 "Unknown preposition: ~S." prep))))
49 (ansi-loop::loop-error "Missing OF or IN iteration path."))
51 (setq from-phrase '(clsql-base:*default-database*)))
53 (unless (consp variable)
54 (setq variable (list variable)))
58 ((and (consp (first in-phrase))
59 (string-equal "sql-query" (symbol-name (caar in-phrase)))
60 (consp (second (first in-phrase)))
61 (eq 'quote (first (second (first in-phrase))))
62 (symbolp (second (second (first in-phrase)))))
64 (let ((result-var (ansi-loop::loop-gentemp
65 'loop-record-result-))
66 (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
67 `(((,variable nil ,@(and data-type (list data-type)))
68 (,result-var (clsql-base:query ,(first in-phrase)))
73 (if (null ,result-var)
76 (setq ,step-var (first ,result-var))
77 (setq ,result-var (rest ,result-var))
82 (if (null ,result-var)
85 (setq ,step-var (first ,result-var))
86 (setq ,result-var (rest ,result-var))
88 (,variable ,step-var))))
91 (let ((query-var (ansi-loop::loop-gentemp 'loop-record-))
92 (db-var (ansi-loop::loop-gentemp 'loop-record-database-))
93 (result-set-var (ansi-loop::loop-gentemp
94 'loop-record-result-set-))
95 (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
96 (push `(when ,result-set-var
97 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
98 ansi-loop::*loop-epilogue*)
99 `(((,variable nil ,@(and data-type (list data-type)))
100 (,query-var ,(first in-phrase))
101 (,db-var ,(first from-phrase))
102 (,result-set-var nil)
104 ((multiple-value-bind (%rs %cols)
105 (clsql-base:database-query-result-set ,query-var ,db-var :result-types :auto)
106 (setq ,result-set-var %rs ,step-var (make-list %cols))))
109 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var))
110 (,variable ,step-var)
111 (not ,result-set-var)
113 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var))
114 (,variable ,step-var)))))))
116 #+(or cmu scl sbcl openmcl allegro)
117 (ansi-loop::add-loop-path '(record records tuple tuples)
118 'loop-record-iteration-path
119 ansi-loop::*loop-ansi-universe*
120 :preposition-groups '((:of :in) (:from))
121 :inclusive-permitted nil)
124 (eval-when (:compile-toplevel :load-toplevel :execute)
128 (cl-user::define-loop-method (record records tuple tuples) clsql-loop-method
132 (defun clsql-loop-method (method-name iter-var iter-var-data-type
133 prep-phrases inclusive? allowed-preps
134 method-specific-data)
135 (declare (ignore method-name inclusive? allowed-preps method-specific-data))
136 (let ((in-phrase nil)
138 (loop for (prep . rest) in prep-phrases
141 ((or (eq prep 'in) (eq prep 'of))
144 "Duplicate OF or IN iteration path: ~S." (cons prep rest)))
145 (setq in-phrase rest))
149 "Duplicate FROM iteration path: ~S." (cons prep rest)))
150 (setq from-phrase rest))
153 "Unknown preposition: ~S." prep))))
155 (error "Missing OF or IN iteration path."))
157 (setq from-phrase '(clsql-base:*default-database*)))
159 (unless (consp iter-var)
160 (setq iter-var (list iter-var)))
164 ((and (consp in-phrase)
165 (string-equal "sql-query" (symbol-name (car in-phrase)))
166 (consp (second in-phrase))
167 (eq 'quote (first (second in-phrase)))
168 (symbolp (second (second in-phrase))))
170 (let ((result-var (gensym "LOOP-RECORD-RESULT-"))
171 (step-var (gensym "LOOP-RECORD-STEP-")))
175 `(,@(mapcar (lambda (v) `(,v nil)) iter-var)
176 (,result-var (clsql-base:query ,in-phrase))
181 `((if (null ,result-var)
184 (setq ,step-var (first ,result-var))
185 (setq ,result-var (rest ,result-var))
187 `(,iter-var ,step-var)
188 `((if (null ,result-var)
191 (setq ,step-var (first ,result-var))
192 (setq ,result-var (rest ,result-var))
194 `(,iter-var ,step-var)
200 (let ((query-var (gensym "LOOP-RECORD-"))
201 (db-var (gensym "LOOP-RECORD-DATABASE-"))
202 (result-set-var (gensym "LOOP-RECORD-RESULT-SET-"))
203 (step-var (gensym "LOOP-RECORD-STEP-")))
207 `(,@(mapcar (lambda (v) `(,v nil)) iter-var)
208 (,query-var ,in-phrase)
209 (,db-var ,(first from-phrase))
210 (,result-set-var nil)
212 `((multiple-value-bind (%rs %cols)
213 (clsql-base:database-query-result-set ,query-var ,db-var :result-types :auto)
214 (setq ,result-set-var %rs ,step-var (make-list %cols))))
217 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var)
218 (when ,result-set-var
219 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
221 `(,iter-var ,step-var)
222 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var)
223 (when ,result-set-var
224 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
226 `(,iter-var ,step-var)