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
55 ((consp (car in-phrase))
56 (ansi-loop::loop-error "object query not yet supported"))
59 (let ((query-var (ansi-loop::loop-gentemp 'loop-record-))
60 (db-var (ansi-loop::loop-gentemp 'loop-record-database-))
61 (result-set-var (ansi-loop::loop-gentemp
62 'loop-record-result-set-))
63 (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
64 (push `(when ,result-set-var
65 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
66 ansi-loop::*loop-epilogue*)
67 `(((,variable nil ,@(and data-type (list data-type)))
68 (,query-var ,(first in-phrase))
69 (,db-var ,(first from-phrase))
72 ((multiple-value-bind (%rs %cols)
73 (clsql-base:database-query-result-set ,query-var ,db-var)
74 (setq ,result-set-var %rs ,step-var (make-list %cols))))
77 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var))
81 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var))
82 (,variable ,step-var))))
84 (let ((query-var (ansi-loop::loop-gentemp 'loop-record-))
85 (db-var (ansi-loop::loop-gentemp 'loop-record-database-))
86 (result-set-var (ansi-loop::loop-gentemp
87 'loop-record-result-set-)))
88 (push `(when ,result-set-var
89 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
90 ansi-loop::*loop-epilogue*)
91 `(((,variable nil ,@(and data-type (list data-type)))
92 (,query-var ,(first in-phrase))
93 (,db-var ,(first from-phrase))
94 (,result-set-var nil))
95 ((multiple-value-bind (%rs %cols)
96 (clsql-base:database-query-result-set ,query-var ,db-var)
97 (setq ,result-set-var %rs ,variable (make-list %cols))))
100 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,variable))
102 (not ,result-set-var)
104 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,variable))
107 #+(or cmu scl sbcl openmcl allegro)
108 (ansi-loop::add-loop-path '(record records tuple tuples)
109 'loop-record-iteration-path
110 ansi-loop::*loop-ansi-universe*
111 :preposition-groups '((:of :in) (:from))
112 :inclusive-permitted nil)
115 (eval-when (:compile-toplevel :load-toplevel :execute)
119 (cl-user::define-loop-method (record records tuple tuples) clsql-loop-method
123 (defun clsql-loop-method (method-name iter-var iter-var-data-type
124 prep-phrases inclusive? allowed-preps
125 method-specific-data)
126 (declare (ignore method-name inclusive? allowed-preps method-specific-data))
127 (let ((in-phrase nil)
129 (loop for (prep . rest) in prep-phrases
132 ((or (eq prep 'in) (eq prep 'of))
135 "Duplicate OF or IN iteration path: ~S." (cons prep rest)))
136 (setq in-phrase rest))
140 "Duplicate FROM iteration path: ~S." (cons prep rest)))
141 (setq from-phrase rest))
144 "Unknown preposition: ~S." prep))))
146 (error "Missing OF or IN iteration path."))
148 (setq from-phrase '(clsql-base:*default-database*)))
151 ;; Object query resulting in a list of returned object instances
153 ((consp (car in-phrase))
154 (error "Object query not yet supported."))
157 (let ((query-var (gensym "LOOP-RECORD-"))
158 (db-var (gensym "LOOP-RECORD-DATABASE-"))
159 (result-set-var (gensym "LOOP-RECORD-RESULT-SET-"))
160 (step-var (gensym "LOOP-RECORD-STEP-")))
164 `(,@(mapcar (lambda (v) `(,v nil)) iter-var)
165 (,query-var ,in-phrase)
166 (,db-var ,(first from-phrase))
167 (,result-set-var nil)
169 `((multiple-value-bind (%rs %cols)
170 (clsql-base:database-query-result-set ,query-var ,db-var)
171 (setq ,result-set-var %rs ,step-var (make-list %cols))))
174 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var)
175 (when ,result-set-var
176 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
178 `(,iter-var ,step-var)
179 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var)
180 (when ,result-set-var
181 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
183 `(,iter-var ,step-var)
187 (let ((query-var (gensym "LOOP-RECORD-"))
188 (db-var (gensym "LOOP-RECORD-DATABASE-"))
189 (result-set-var (gensym "LOOP-RECORD-RESULT-SET-")))
193 `((,iter-var nil ,iter-var-data-type) (,query-var ,in-phrase)
194 (,db-var ,(first from-phrase))
195 (,result-set-var nil))
196 `((multiple-value-bind (%rs %cols)
197 (clsql-base:database-query-result-set ,query-var ,db-var)
198 (setq ,result-set-var %rs ,iter-var (make-list %cols))))
201 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,iter-var)
202 (when ,result-set-var
203 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
206 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,iter-var)
207 (when ,result-set-var
208 (clsql-base:database-dump-result-set ,result-set-var ,db-var))