1 ;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; Package: umlisp -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
6 ;;;; Purpose: SQL Generation functions for Hyperobject
7 ;;;; Programmer: Kevin M. Rosenberg
8 ;;;; Date Started: Apr 2000
10 ;;;; $Id: sql.lisp,v 1.6 2003/06/06 21:59:29 kevin Exp $
12 ;;;; This file is Copyright (c) 2000-2003 by Kevin M. Rosenberg
13 ;;;; *************************************************************************
15 (in-package #:hyperobject)
17 ;;;; Metaclass initialization commands
19 (defun finalize-sql (cl)
20 (setf (slot-value cl 'sql-name) (sql-name cl))
21 (setf (slot-value cl 'drop-table-cmd) (generate-drop-table-cmd
22 (slot-value cl 'sql-name)))
23 (let ((esds (class-slots cl)))
25 (setf (slot-value esd 'sql-name) (sql-name esd)))
26 (setf (slot-value cl 'create-table-cmd)
27 (generate-create-table-cmd cl esds))
28 (setf (slot-value cl 'create-indices-cmds)
29 (generate-create-indices-cmds (slot-value cl 'sql-name) esds))
31 (when (slot-value esd 'inverse)
32 (define-inverse cl esd))))
35 (defgeneric sql-name (cl)
38 (defmethod sql-name ((cl hyperobject-class))
39 "Return name of SQL table for a class"
40 (let* ((sql-name-slot (slot-value cl 'sql-name))
41 (name (if (consp sql-name-slot) (car sql-name-slot) sql-name-slot))
42 (lisp-name (if name name (class-name cl))))
43 (lisp-name-to-sql-name lisp-name)))
45 (defmethod sql-name ((esd hyperobject-esd))
46 (let* ((name (slot-value esd 'sql-name))
47 (lisp-name (if name name (slot-definition-name esd))))
48 (lisp-name-to-sql-name lisp-name)))
50 (defun lisp-name-to-sql-name (lisp)
51 "Convert a lisp name (atom or list, string or symbol) into a canonical
53 (unless (stringp lisp)
56 (symbol (symbol-name lisp))
57 (t (write-to-string lisp)))))
58 (do* ((len (length lisp))
59 (sql (make-string len))
61 ((= i len) (string-upcase sql))
65 (let ((c (char lisp i)))
67 ((#\- #\$ #\+ #\#) #\_)
70 (defun define-inverse (class esd)
71 "Define an inverse function for a slot"
72 (let ((inverse (slot-value esd 'inverse)))
75 `(defun ,inverse (obj)
76 (format t "~&Finding key: ~S for class ~S ~%" obj ,class)
77 ;; create inverse function
82 (defun generate-create-table-cmd (cl esds)
83 (let ((cmd (format nil "CREATE TABLE ~A" (slot-value cl 'sql-name)))
84 (subobjects (slot-value cl 'subobjects)))
86 (unless (find (slot-definition-name esd) subobjects :key #'name-slot)
87 (if (eq esd (car esds))
88 (string-append cmd " (")
89 (string-append cmd ", "))
90 (string-append cmd (lisp-name-to-sql-name (slot-definition-name esd))
92 (let ((length (slot-value esd 'length))
93 (sql-type (slot-value esd 'sql-type)))
94 (string-append cmd (sql-field-cmd sql-type length)))))
95 (string-append cmd ")")))
98 (defun sql-field-cmd (type length)
99 (case (intern (symbol-name type) (symbol-name :keyword))
105 (format nil "CHAR(~d)" length))
107 (format nil "VARCHAR(~d)" length))))
113 (format nil "CHAR(~D)" length))
116 ((or :fixnum :integer)
120 ((or :short-float :float)
125 (defun generate-drop-table-cmd (table-name)
126 (format nil "DROP TABLE ~a" table-name))
128 (defun generate-create-indices-cmds (table-name slots)
131 (when (slot-value slot 'index)
132 (let ((sql-name (slot-value slot 'sql-name)))
133 (push (sql-cmd-index table-name sql-name (slot-value slot 'unique))
137 (defun sql-cmd-index (table field unique)
138 (let ((*print-circle* nil))
139 (format nil "CREATE ~AINDEX ~A ON ~A(~A)"
140 (if unique "UNIQUE " "")
141 (sql-index-name table field)
145 (defun sql-index-name (table field)
146 (format nil "~A_~A" table field))
148 ;;;; Runtime Commands
150 (defgeneric sql-create (cl))
151 (defmethod sql-create (cl)
152 (with-sql-connection (conn)
153 (sql-execute (slot-value cl 'create-table-cmd) conn)
154 (dolist (cmd (slot-value cl 'create-indices-cmds))
155 (sql-execute cmd conn))
158 (defgeneric sql-drop (cl))
159 (defmethod sql-drop (cl)
160 (mutex-sql-execute (slot-value cl 'drop-table-cmd))
164 (defmethod sql-insert (obj)
166 (format nil "INSERT INTO ~a (~a) VALUES (~a)"
167 (sql-name self) (sql-cmd-field-names self) (format-values self))))
169 (defmethod sql-select (obj lisp-name key)
173 (format nil "SELECT ~a FROM ~a WHERE ~a=~a"
174 (sql-cmd-field-names self) (sql-name self)
175 (inverse-field-name self) key)))))
177 (format t "process returned fields"))))
180 (defun format-values (self)
182 (fields (fields self)))
183 (dolist (field fields)
184 (unless (eq field (car fields))
185 (string-append values ","))
186 (let ((name (car field)))
187 (with-key-value-list (key value (rest field))
189 (string-append values
191 ((:fixnum :bigint :short-float :double-float)
193 (slot-value self name)))
197 (slot-value self name))))))))))
200 (defun inverse-field-string (fields)
202 (dolist (field fields)
203 (let ((name-string (write-to-string (car field))))
204 (with-key-value-list (key value (rest field))
205 (when (eq key :inverse)
206 (setq inverse value)))))
208 (write-to-string inverse))))
210 (defun row-field-string (fields)
212 (dolist (field fields)
213 (unless (eq field (car fields))
214 (string-append names ","))
215 (string-append names (lisp-name-to-sql-name (car field))))
219 (defun parse-fields (table-name fields)
221 (dolist (field fields)
222 (let* ((fname (car field))
223 (name-string (write-to-string fname))
224 (initarg (intern name-string :keyword))concat-symbol
226 (options (rest field)))
227 (with-key-value-list (key value options)
230 (setq def (nconc def (list :type
244 (setq def (nconc def (list
246 :accessor (concat-symbol
247 (write-to-string table-name) "-"
248 (write-to-string fname)))))
249 (push def class-fields)))