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[hyperobject.git] / connect.lisp

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+;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; Package: umlisp -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name:          connect.lisp
+;;;; Purpose:       Low-level SQL routines data for UMLisp
+;;;; Programmer:    Kevin M. Rosenberg
+;;;; Date Started:  Apr 2000
+;;;;
+;;;; $Id: connect.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)))
+
+
+(defvar *ho-sql-db* "ho")
+(defun ho-sql-db ()
+  *ho-sql-db*)
+(defun ho-sql-db! (dbname)
+  (sql-disconnect-pooled)
+  (setq *ho-sql-db* dbname))
+
+(defvar *ho-sql-user* "secret")
+(defun ho-sql-user ()
+  *ho-sql-user*)
+(defun ho-sql-user! (u)
+  (sql-disconnect-pooled)
+  (setq *ho-sql-user* u))
+
+(defvar *ho-sql-passwd* "secret")
+(defun ho-sql-passwd ()
+  *ho-sql-passwd*)
+(defun ho-sql-passwd! (p)
+  (sql-disconnect-pooled)
+  (setq *ho-sql-passwd* p))
+
+(defvar *ho-sql-host* "localhost")
+(defun ho-sql-host ()
+  *ho-sql-host*)
+(defun ho-sql-host! (h)
+  (sql-disconnect-pooled)
+  (setq *ho-sql-host* h))
+
+(defvar *ho-sql-type* :mysql)
+(defun ho-sql-type ()
+  *ho-sql-type*)
+(defun ho-sql-type! (h)
+  (sql-disconnect-pooled)
+  (setq *ho-sql-type* h))
+
+(defun sql-connect ()
+  "Connect to HO database, automatically used pooled connections"
+  (clsql:connect `(,(ho-sql-host) ,(ho-sql-db) ,(ho-sql-user) ,(ho-sql-passwd)) 
+                :database-type *ho-sql-type* :pool t))
+
+(defun sql-disconnect (conn)
+  "Disconnect from HO database, but put connection back into pool"
+  (clsql:disconnect :database conn))
+
+(defun sql-disconnect-pooled ()
+  (clsql:disconnect-pooled))
+
+(defmacro with-sql-connection ((conn) &body body)
+  `(let ((,conn (sql-connect)))
+     (unwind-protect
+        (progn ,@body)
+       (when ,conn (clsql:disconnect :database ,conn)))))
+
+(defun sql (stmt conn)
+  (if (string-equal "SELECT" (subseq stmt 0 6))
+      (sql-query stmt conn)
+    (sql-execute stmt conn)))
+
+(defun sql-query (cmd conn &key (types :auto))
+  (clsql:query cmd :database conn :types types))
+
+(defun sql-execute (cmd conn)
+  (clsql:execute-command cmd :database conn))
+
+(defun ho-sql (stmt)
+  (check-type stmt string)
+  (with-sql-connection (conn)
+    (sql stmt conn)))
+
+;;; Pool of open connections
+
+(defmacro with-mutex-sql ((conn) &body body)
+  `(let ((,conn (sql-connect)))
+     (unwind-protect
+        (progn ,@body)
+       (when ,conn (sql-disconnect ,conn)))))
+
+(defun mutex-sql-execute (cmd)
+  (with-mutex-sql (conn)
+    (sql-execute cmd conn)))
+
+(defun mutex-sql-query (cmd &key (types :auto))
+  (with-mutex-sql (conn)
+    (sql-query cmd conn :types types)))