--- /dev/null
+;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; Package: umlisp -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name: sqlgen.lisp
+;;;; Purpose: SQL Generation functions for Hyperobject
+;;;; Programmer: Kevin M. Rosenberg
+;;;; Date Started: Apr 2000
+;;;;
+;;;; $Id: sqlgen.lisp,v 1.1 2002/12/01 21:07:28 kevin Exp $
+;;;;
+;;;; This file, part of Hyperobject-SQL, is
+;;;; Copyright (c) 2000-2002 by Kevin M. Rosenberg, M.D.
+;;;; *************************************************************************
+
+(in-package :hyperobject)
+(declaim (optimize (speed 3) (safety 1) (compilation-speed 0) (debug 3)))
+
+
+;;;; Metaclass initialization commands
+(defun process-sql (cl)
+ (let ((esds (class-slots cl)))
+ (let* ((table-name-slot (slot-value cl 'sql-name))
+ (generate-table-cmd (generate-create-table-string
+ (if (consp table-name-slot)
+ (car table-name-slot)
+ table-name-slot)
+ dsds)))
+ (setf (slot-value cl 'create-table-cmd) generate-table-cmd))
+
+ (dolist (dsd dsds)
+ (when (dsd-inverse dsd)
+ (define-inverse cl dsd))))
+ )
+
+(defun define-inverse (class dsd)
+ (let ((inverse (dsd-inverse dsd)))
+ (when inverse
+ (eval
+ `(defun ,inverse (key)
+ (format t "~&Finding key: ~a~%" key)
+ (make-instance 'st)
+ ))
+
+ ;; create inverse function
+ ))
+ )
+
+(defun generate-create-table-string (table-name dsds)
+ (let ((cmd (format nil "CREATE TABLE ~A ("
+ (slot-name-to-sql-name table-name))))
+ (dolist (dsd dsds)
+ (unless (eq dsd (car dsds))
+ (string-append cmd ", "))
+ (string-append cmd (slot-name-to-sql-name
+ #+allegro (clos:slot-definition-name dsd)
+ #+lispworks (clos:slot-definition-name dsd)
+ ) " ")
+ (let ((length (dsd-length dsd))
+ (sql-type (dsd-sql-type dsd)))
+ (string-append cmd (sql-field-cmd sql-type length))))
+ (string-append cmd ")")))
+
+
+;;;; Runtime Commands
+
+(defclass sqltable ()
+ ()
+ )
+
+(defmethod sql-create ((self sqltable))
+ (sql (sql-cmd-create-table self))
+ (dolist (cmd (sql-cmd-create-indices self))
+ (sql cmd))
+ (values))
+
+(defmethod sql-drop ((self sqltable))
+ (sql (sql-cmd-drop-table self))
+ (values))
+
+(defmethod sql-insert ((self sqltable))
+ (sql
+ (format nil "INSERT INTO ~a (~a) VALUES (~a)"
+ (table-name self) (sql-cmd-field-names self) (format-values self))))
+
+(defmethod sql-select ((self sqltable) key)
+ (let ((tuple
+ (car
+ (sql
+ (format nil "SELECT ~a FROM ~a WHERE ~a=~a"
+ (sql-cmd-field-names self) (table-name self)
+ (inverse-field-name self) key)))))
+ (when tuple
+ (format t "process returned fields"))))
+
+
+(defun format-values (self)
+ (let ((values "")
+ (fields (fields self)))
+ (dolist (field fields)
+ (unless (eq field (car fields))
+ (string-append values ","))
+ (let ((name (car field)))
+ (with-key-value-list (key value (rest field))
+ (when (eq key :type)
+ (string-append values
+ (ecase value
+ ((:fixnum :bigint :short-float :double-float)
+ (write-to-string
+ (slot-value self name)))
+ ((:string :text)
+ (format nil "'~a'"
+ (add-sql-quotes
+ (slot-value self name))))))))))
+ values))
+
+(defmacro defsqltable (tname &key fields)
+ `(progn
+ (defclass ,tname (sqltable)
+ ,(parse-fields tname fields)
+ ,(default-initargs fields))
+
+ (defmethod table-name ((self ,tname))
+ ,(substitute #\_ #\- (write-to-string tname)))
+
+ (defmethod fields ((self ,tname))
+ (quote ,fields))
+
+ (defmethod sql-cmd-create-table ((self ,tname))
+ ,(create-table-string tname fields))
+
+ (defmethod sql-cmd-create-indices ((self ,tname))
+ "Return a list of index cmds"
+ (quote ,(create-indices-string tname fields)))
+
+ (defmethod sql-cmd-drop-table ((self ,tname))
+ ,(format nil "DROP TABLE ~a" tname))
+
+ (defmethod sql-cmd-field-names ((self ,tname))
+ ,(row-field-string fields))
+
+ (defmethod inverse-field-name ((self ,tname))
+ ,(inverse-field-string fields))
+ ))
+
+(defun create-indices-string (table-name fields)
+ (let (indices)
+ (dolist (field fields)
+ (let ((name-string (write-to-string (car field))))
+ (with-key-value-list (key value (rest field))
+ (when (eq key :unique)
+ (case value
+ (nil
+ (push (sql-cmd-index table-name name-string nil) indices))
+ (t
+ (push (sql-cmd-index table-name name-string t) indices)))))))
+ indices))
+
+(defun inverse-field-string (fields)
+ (let (inverse)
+ (dolist (field fields)
+ (let ((name-string (write-to-string (car field))))
+ (with-key-value-list (key value (rest field))
+ (when (eq key :inverse)
+ (setq inverse value)))))
+ (when inverse
+ (write-to-string inverse))))
+
+(defun sql-cmd-index (table field unique)
+ (let ((*print-circle* nil))
+ (format nil "CREATE ~A INDEX ~A_~A ON ~A(~A)"
+ (if unique "UNIQUE" "")
+ (slot-name-to-sql-name table)
+ (slot-name-to-sql-name field)
+ (slot-name-to-sql-name table)
+ (slot-name-to-sql-name field))))
+
+(defun row-field-string (fields)
+ (let ((names ""))
+ (dolist (field fields)
+ (unless (eq field (car fields))
+ (string-append names ","))
+ (string-append names (slot-name-to-sql-name (car field))))
+ names))
+
+(defun slot-name-to-sql-name (name)
+ (substitute #\_ #\- (format nil "~a" name)))
+
+(defun create-table-string (table-name fields)
+ (let ((cmd (format nil "CREATE TABLE ~A (" (slot-name-to-sql-name table-name))))
+ (dolist (field fields)
+ (unless (eq field (car fields))
+ (string-append cmd ", "))
+ (string-append cmd (slot-name-to-sql-name (car field)) " ")
+ (let (length type)
+ (with-key-value-list (key value (rest field))
+ (case key
+ (:length
+ (setq length value))
+ (:type
+ (setq type value))))
+ (string-append cmd (sql-field-cmd type length))))
+ (string-append cmd ")")))
+
+
+(defun sql-field-cmd (type length)
+ (ecase type
+ (:string
+ (if (< length 8)
+ (format nil "CHAR(~d)" length)
+ (format nil "VARCHAR(~d)" length)))
+ (:text
+ "LONGTEXT")
+ (:fixnum
+ "INTEGER")
+ (:bigint
+ "BIGINT")
+ (:short-float
+ "SINGLE")
+ (:long-float
+ "DOUBLE")))
+
+(defmacro with-key-value-list ((key value list) form)
+ (let ((i (gensym)))
+ `(loop for ,i from 0 to (1- (length ,list)) by 2 do
+ (let ((,key (nth ,i ,list))
+ (,value (nth (1+ ,i) ,list)))
+ ,form))))
+
+(defun parse-fields (table-name fields)
+ (let (class-fields)
+ (dolist (field fields)
+ (let* ((fname (car field))
+ (name-string (write-to-string fname))
+ (initarg (intern name-string :keyword))concat-symbol
+ (def (list fname))
+ (options (rest field)))
+ (with-key-value-list (key value options)
+ (case key
+ (:type
+ (setq def (nconc def (list :type
+ (ecase value
+ (:string
+ 'string)
+ (:fixnum
+ 'fixnum)
+ (:bigint
+ 'integer)
+ (:short-float
+ 'short-float)
+ (:long
+ 'long-float)
+ (:text
+ 'string))))))))
+ (setq def (nconc def (list
+ :initarg initarg
+ :accessor (concat-symbol
+ (write-to-string table-name) "-"
+ (write-to-string fname)))))
+ (push def class-fields)))
+ class-fields))
+
+(defun default-initargs (fields)
+ (let ((initargs (list :default-initargs)))
+ (dolist (field fields)
+ (let* ((fname (car field))
+ (name-string (write-to-string fname))
+ (initarg (intern name-string :keyword)))
+ (setq initargs (nconc initargs (list initarg nil)))))
+ initargs))
+
+
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