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 ;; Object query resulting in a list of returned object instances
54 ((and (consp in-phrase)
55 (consp (car in-phrase))
56 (consp (second (car in-phrase)))
57 (eq 'quote (first (second (car in-phrase))))
58 (symbolp (second (second (car in-phrase)))))
59 (ansi-loop::loop-error "object query not yet supported"))
62 (let ((query-var (ansi-loop::loop-gentemp 'loop-record-))
63 (db-var (ansi-loop::loop-gentemp 'loop-record-database-))
64 (result-set-var (ansi-loop::loop-gentemp
65 'loop-record-result-set-))
66 (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
67 (push `(when ,result-set-var
68 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
69 ansi-loop::*loop-epilogue*)
70 `(((,variable nil ,@(and data-type (list data-type)))
71 (,query-var ,(first in-phrase))
72 (,db-var ,(first from-phrase))
75 ((multiple-value-bind (%rs %cols)
76 (clsql-base:database-query-result-set ,query-var ,db-var :result-types :auto)
77 (setq ,result-set-var %rs ,step-var (make-list %cols))))
80 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var))
84 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var))
85 (,variable ,step-var))))
87 (let ((query-var (ansi-loop::loop-gentemp 'loop-record-))
88 (db-var (ansi-loop::loop-gentemp 'loop-record-database-))
89 (result-set-var (ansi-loop::loop-gentemp
90 'loop-record-result-set-)))
91 (push `(when ,result-set-var
92 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
93 ansi-loop::*loop-epilogue*)
94 `(((,variable nil ,@(and data-type (list data-type)))
95 (,query-var ,(first in-phrase))
96 (,db-var ,(first from-phrase))
97 (,result-set-var nil))
98 ((multiple-value-bind (%rs %cols)
99 (clsql-base:database-query-result-set ,query-var ,db-var :result-types :auto)
100 (setq ,result-set-var %rs ,variable (make-list %cols))))
103 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,variable))
105 (not ,result-set-var)
107 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,variable))
110 #+(or cmu scl sbcl openmcl allegro)
111 (ansi-loop::add-loop-path '(record records tuple tuples)
112 'loop-record-iteration-path
113 ansi-loop::*loop-ansi-universe*
114 :preposition-groups '((:of :in) (:from))
115 :inclusive-permitted nil)
118 (eval-when (:compile-toplevel :load-toplevel :execute)
122 (cl-user::define-loop-method (record records tuple tuples) clsql-loop-method
126 (defun clsql-loop-method (method-name iter-var iter-var-data-type
127 prep-phrases inclusive? allowed-preps
128 method-specific-data)
129 (declare (ignore method-name inclusive? allowed-preps method-specific-data))
130 (let ((in-phrase nil)
132 (loop for (prep . rest) in prep-phrases
135 ((or (eq prep 'in) (eq prep 'of))
138 "Duplicate OF or IN iteration path: ~S." (cons prep rest)))
139 (setq in-phrase rest))
143 "Duplicate FROM iteration path: ~S." (cons prep rest)))
144 (setq from-phrase rest))
147 "Unknown preposition: ~S." prep))))
149 (error "Missing OF or IN iteration path."))
151 (setq from-phrase '(clsql-base:*default-database*)))
154 ;; Object query resulting in a list of returned object instances
155 ((and (consp in-phrase)
156 (consp (car in-phrase))
157 (consp (second (car in-phrase)))
158 (eq 'quote (first (second (car in-phrase))))
159 (symbolp (second (second (car in-phrase)))))
160 (loop-error "object query not yet supported"))
163 (let ((query-var (gensym "LOOP-RECORD-"))
164 (db-var (gensym "LOOP-RECORD-DATABASE-"))
165 (result-set-var (gensym "LOOP-RECORD-RESULT-SET-"))
166 (step-var (gensym "LOOP-RECORD-STEP-")))
170 `(,@(mapcar (lambda (v) `(,v nil)) iter-var)
171 (,query-var ,in-phrase)
172 (,db-var ,(first from-phrase))
173 (,result-set-var nil)
175 `((multiple-value-bind (%rs %cols)
176 (clsql-base:database-query-result-set ,query-var ,db-var :result-types :auto)
177 (setq ,result-set-var %rs ,step-var (make-list %cols))))
180 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var)
181 (when ,result-set-var
182 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
184 `(,iter-var ,step-var)
185 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var)
186 (when ,result-set-var
187 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
189 `(,iter-var ,step-var)
193 (let ((query-var (gensym "LOOP-RECORD-"))
194 (db-var (gensym "LOOP-RECORD-DATABASE-"))
195 (result-set-var (gensym "LOOP-RECORD-RESULT-SET-")))
199 `((,iter-var nil ,iter-var-data-type) (,query-var ,in-phrase)
200 (,db-var ,(first from-phrase))
201 (,result-set-var nil))
202 `((multiple-value-bind (%rs %cols)
203 (clsql-base:database-query-result-set ,query-var ,db-var :result-types :auto)
204 (setq ,result-set-var %rs ,iter-var (make-list %cols))))
207 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,iter-var)
208 (when ,result-set-var
209 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
212 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,iter-var)
213 (when ,result-set-var
214 (clsql-base:database-dump-result-set ,result-set-var ,db-var))