X-Git-Url: http://git.kpe.io/?p=clsql.git;a=blobdiff_plain;f=db-mysql%2Fmysql-usql.lisp;fp=db-mysql%2Fmysql-usql.lisp;h=dc3ea839e196a61da6645fe845f77ab6884e6838;hp=0000000000000000000000000000000000000000;hb=7d50938ba2db52a713498e49aa1679deae6f0b6b;hpb=998937376fa6f9ce29bd3c7954fb0ebca91c37d7

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+;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name:          mysql-usql.cl
+;;;; Purpose:       MySQL interface functions to support UncommonSQL
+;;;; Programmers:   Kevin M. Rosenberg and onShore Development Inc
+;;;; Date Started:  Mar 2002
+;;;;
+;;;; $Id: mysql-usql.lisp,v 1.1 2002/09/30 10:19:23 kevin Exp $
+;;;;
+;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
+;;;; and by onShore Development Inc.
+;;;;
+;;;; CLSQL users are granted the rights to distribute and use this software
+;;;; as governed by the terms of the Lisp Lesser GNU Public License
+;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
+;;;; *************************************************************************
+
+(declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
+(in-package :clsql-mysql)
+
+;; Table and attribute introspection
+
+(defmethod database-list-tables ((database mysql-database)
+				 &key (system-tables nil))
+  (declare (ignore system-tables))
+  (mapcar #'car (database-query "show tables" database :auto)))
+    
+
+(defmethod database-list-attributes ((table string) (database mysql-database))
+  (mapcar #'car
+	  (database-query
+	   (format nil "SHOW COLUMNS FROM ~A" table)
+	   database nil)))
+
+(defmethod database-attribute-type (attribute (table string)
+				    (database mysql-database))
+  (let ((result
+	  (mapcar #'cadr
+		  (database-query
+		   (format nil
+			   "SHOW COLUMNS FROM ~A LIKE '~A'" table attribute)
+		   database nil))))
+    (let* ((str (car result))
+	   (end-str (position #\( str))
+	   (substr (subseq str 0 end-str)))
+      (if substr
+      (intern (string-upcase substr) :keyword) nil))))
+
+;;; Sequence functions
+
+(defun %sequence-name-to-table (sequence-name)
+  (concatenate 'string "_usql_seq_" (sql-escape sequence-name)))
+
+(defmethod database-create-sequence (sequence-name
+				     (database mysql-database))
+  (let ((table-name (%sequence-name-to-table sequence-name)))
+    (database-execute-command
+     (concatenate 'string "CREATE TABLE " table-name
+		  " (id int NOT NULL PRIMARY KEY AUTO_INCREMENT)")
+     database)
+    (database-execute-command 
+     (concatenate 'string "INSERT INTO " table-name
+		  " VALUES (0)")
+     database)))
+
+(defmethod database-drop-sequence (sequence-name
+				   (database mysql-database))
+  (database-execute-command
+   (concatenate 'string "DROP TABLE " (%sequence-name-to-table sequence-name)) 
+   database))
+
+(defmethod database-sequence-next (sequence-name (database mysql-database))
+  (database-execute-command 
+   (concatenate 'string "UPDATE " (%sequence-name-to-table sequence-name)
+		" SET id=LAST_INSERT_ID(id+1)")
+   database)
+  (mysql:mysql-insert-id (clsql-mysql::database-mysql-ptr database)))
+
+;; Misc USQL functions
+
+#|
+#+ignore
+(defmethod database-output-sql ((expr clsql-sys::sql-typecast-exp) 
+				(database mysql-database))
+  (with-slots (clsql-sys::modifier clsql-sys::components)
+    expr
+    (if clsql-sys::modifier
+        (progn
+          (clsql-sys::output-sql clsql-sys::components database)
+          (write-char #\: sql-sys::*sql-stream*)
+          (write-char #\: sql-sys::*sql-stream*)
+          (write-string (symbol-name clsql-sys::modifier) 
+			clsql-sys::*sql-stream*)))))
+
+#+ignore
+(defmethod database-output-sql-as-type ((type (eql 'integer)) val
+					(database mysql-database))
+  ;; typecast it so it uses the indexes
+  (when val
+    (make-instance 'clsql-sys::sql-typecast-exp
+                   :modifier 'int8
+                   :components val)))
+|#