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 (error "object query not yet supported"))
58 (let ((query-var (ansi-loop::loop-gentemp 'loop-record-))
59 (db-var (ansi-loop::loop-gentemp 'loop-record-database-))
60 (result-set-var (ansi-loop::loop-gentemp
61 'loop-record-result-set-))
62 (step-var (ansi-loop::loop-gentemp 'loop-record-step-)))
63 (push `(when ,result-set-var
64 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
65 ansi-loop::*loop-epilogue*)
66 `(((,variable nil ,@(and data-type (list data-type)))
67 (,query-var ,(first in-phrase))
68 (,db-var ,(first from-phrase))
71 ((multiple-value-bind (%rs %cols)
72 (clsql-base:database-query-result-set ,query-var ,db-var)
73 (setq ,result-set-var %rs ,step-var (make-list %cols))))
76 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var))
80 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var))
81 (,variable ,step-var))))
83 (let ((query-var (ansi-loop::loop-gentemp 'loop-record-))
84 (db-var (ansi-loop::loop-gentemp 'loop-record-database-))
85 (result-set-var (ansi-loop::loop-gentemp
86 'loop-record-result-set-)))
87 (push `(when ,result-set-var
88 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
89 ansi-loop::*loop-epilogue*)
90 `(((,variable nil ,@(and data-type (list data-type)))
91 (,query-var ,(first in-phrase))
92 (,db-var ,(first from-phrase))
93 (,result-set-var nil))
94 ((multiple-value-bind (%rs %cols)
95 (clsql-base:database-query-result-set ,query-var ,db-var)
96 (setq ,result-set-var %rs ,variable (make-list %cols))))
99 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,variable))
101 (not ,result-set-var)
103 (not (clsql-base:database-store-next-row ,result-set-var ,db-var ,variable))
106 #+(or cmu scl sbcl openmcl allegro)
107 (ansi-loop::add-loop-path '(record records tuple tuples)
108 'loop-record-iteration-path
109 ansi-loop::*loop-ansi-universe*
110 :preposition-groups '((:of :in) (:from))
111 :inclusive-permitted nil)
114 (eval-when (:compile-toplevel :load-toplevel :execute)
118 (cl-user::define-loop-method (record records tuple tuples) clsql-loop-method
122 (defun clsql-loop-method (method-name iter-var iter-var-data-type
123 prep-phrases inclusive? allowed-preps
124 method-specific-data)
125 (declare (ignore method-name inclusive? allowed-preps method-specific-data))
126 (let ((in-phrase nil)
128 (loop for (prep . rest) in prep-phrases
131 ((or (eq prep 'in) (eq prep 'of))
134 "Duplicate OF or IN iteration path: ~S." (cons prep rest)))
135 (setq in-phrase rest))
139 "Duplicate FROM iteration path: ~S." (cons prep rest)))
140 (setq from-phrase rest))
143 "Unknown preposition: ~S." prep))))
145 (error "Missing OF or IN iteration path."))
147 (setq from-phrase '(clsql-base:*default-database*)))
150 ;; Object query resulting in a list of returned object instances
152 (error "Object query not yet supported."))
155 (let ((query-var (gensym "LOOP-RECORD-"))
156 (db-var (gensym "LOOP-RECORD-DATABASE-"))
157 (result-set-var (gensym "LOOP-RECORD-RESULT-SET-"))
158 (step-var (gensym "LOOP-RECORD-STEP-")))
162 `(,@(mapcar (lambda (v) `(,v nil)) iter-var)
163 (,query-var ,in-phrase)
164 (,db-var ,(first from-phrase))
165 (,result-set-var nil)
167 `((multiple-value-bind (%rs %cols)
168 (clsql-base:database-query-result-set ,query-var ,db-var)
169 (setq ,result-set-var %rs ,step-var (make-list %cols))))
172 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var)
173 (when ,result-set-var
174 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
176 `(,iter-var ,step-var)
177 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,step-var)
178 (when ,result-set-var
179 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
181 `(,iter-var ,step-var)
185 (let ((query-var (gensym "LOOP-RECORD-"))
186 (db-var (gensym "LOOP-RECORD-DATABASE-"))
187 (result-set-var (gensym "LOOP-RECORD-RESULT-SET-")))
191 `((,iter-var nil ,iter-var-data-type) (,query-var ,in-phrase)
192 (,db-var ,(first from-phrase))
193 (,result-set-var nil))
194 `((multiple-value-bind (%rs %cols)
195 (clsql-base:database-query-result-set ,query-var ,db-var)
196 (setq ,result-set-var %rs ,iter-var (make-list %cols))))
199 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,iter-var)
200 (when ,result-set-var
201 (clsql-base:database-dump-result-set ,result-set-var ,db-var))
204 `((unless (clsql-base:database-store-next-row ,result-set-var ,db-var ,iter-var)
205 (when ,result-set-var
206 (clsql-base:database-dump-result-set ,result-set-var ,db-var))