X-Git-Url: http://git.kpe.io/?p=clsql.git;a=blobdiff_plain;f=sql%2Fsql.cl;h=101d30f128619f28d6577920ff5df267ea58abd2;hp=4b88fd584118ec8f3eb3023bd5d4b1ab4f0c9d04;hb=998937376fa6f9ce29bd3c7954fb0ebca91c37d7;hpb=2073ba6b66571d3da57523dbdcb30ed6ffb4b161

diff --git a/sql/sql.cl b/sql/sql.cl
index 4b88fd5..101d30f 100644
--- a/sql/sql.cl
+++ b/sql/sql.cl
@@ -8,7 +8,7 @@
 ;;;;                 Original code by Pierre R. Mai 
 ;;;; Date Started:  Feb 2002
 ;;;;
-;;;; $Id: sql.cl,v 1.12 2002/04/19 20:25:20 marc.battyani Exp $
+;;;; $Id: sql.cl,v 1.19 2002/09/17 17:16:43 kevin Exp $
 ;;;;
 ;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
 ;;;; and Copyright (c) 1999-2001 by Pierre R. Mai
@@ -30,37 +30,6 @@
 ;;; Simple implementation of SQL along the lines of Harlequin's Common SQL
 
 
-;;; Database Types
-
-(defvar *loaded-database-types* nil
-  "Contains a list of database types which have been defined/loaded.")
-
-(defmethod database-type-load-foreign :after (database-type)
-  (when (database-type-library-loaded database-type)
-     (pushnew database-type *loaded-database-types*)))
-
-(defun reload-database-types ()
-  "Reloads any foreign code for the loaded database types after a dump."
-  (mapc #'database-type-load-foreign *loaded-database-types*))
-
-(defvar *default-database-type* nil
-  "Specifies the default type of database.  Currently only :mysql is
-supported.")
-
-(defvar *initialized-database-types* nil
-  "Contains a list of database types which have been initialized by calls
-to initialize-database-type.")
-
-(defun initialize-database-type (&key (database-type *default-database-type*))
-  "Initialize the given database-type, if it is not already
-initialized, as indicated by `*initialized-database-types*'."
-  (if (member database-type *initialized-database-types*)
-      t
-      (when (database-initialize-database-type database-type)
-	(push database-type *initialized-database-types*)
-	t)))
-
-
 ;;; Database handling
 
 (defvar *connect-if-exists* :error
@@ -76,8 +45,6 @@ initialized, as indicated by `*initialized-database-types*'."
 (defvar *default-database* nil
   "Specifies the default database to be used.")
 
-
-
 (defun find-database (database &optional (errorp t))
   (etypecase database
     (database
@@ -95,31 +62,37 @@ initialized, as indicated by `*initialized-database-types*'."
 
 (defun connect (connection-spec
 		&key (if-exists *connect-if-exists*)
-		(database-type *default-database-type*))
+		(database-type *default-database-type*)
+		(pool nil))
   "Connects to a database of the given database-type, using the type-specific
-connection-spec.  if-exists is currently ignored."
-  (let* ((db-name (database-name-from-spec connection-spec database-type))
-	 (old-db (find-database db-name nil))
-	 (result nil))
-    (if old-db
+connection-spec.  if-exists is currently ignored.
+If pool is t the the connection will be taken from the general pool,
+if pool is a conn-pool object the connection will be taken from this pool.
+"
+  (if pool
+    (acquire-from-pool connection-spec database-type pool)
+    (let* ((db-name (database-name-from-spec connection-spec database-type))
+	   (old-db (unless (eq if-exists :new) (find-database db-name nil)))
+	   (result nil))
+      (if old-db
 	(case if-exists
-	  (:new
-	   (setq result
-		 (database-connect connection-spec database-type)))
+;	    (:new
+;	     (setq result
+;	       (database-connect connection-spec database-type)))
 	  (:warn-new
 	   (setq result
 		 (database-connect connection-spec database-type))
 	   (warn 'clsql-exists-warning :old-db old-db :new-db result))
 	  (:error
 	   (restart-case
-	       (error 'clsql-exists-error :old-db old-db)
-	     (create-new ()
-	       :report "Create a new connection."
-	       (setq result
-		     (database-connect connection-spec database-type)))
-	     (use-old ()
-	       :report "Use the existing connection."
-	       (setq result old-db))))
+		 (error 'clsql-exists-error :old-db old-db)
+	       (create-new ()
+		   :report "Create a new connection."
+		 (setq result
+		   (database-connect connection-spec database-type)))
+	       (use-old ()
+		   :report "Use the existing connection."
+		 (setq result old-db))))
 	  (:warn-old
 	   (setq result old-db)
 	   (warn 'clsql-exists-warning :old-db old-db :new-db old-db))
@@ -127,24 +100,24 @@ connection-spec.  if-exists is currently ignored."
 	   (setq result old-db)))
 	(setq result
 	      (database-connect connection-spec database-type)))
-    (when result
-      (pushnew result *connected-databases*)
-      (setq *default-database* result)
-      result)))
-
+      (when result
+	(pushnew result *connected-databases*)
+	(setq *default-database* result)
+	result))))
 
 
 (defun disconnect (&key (database *default-database*))
   "Closes the connection to database. Resets *default-database* if that
-database was disconnected and only one other connection exists."
-  (when (database-disconnect database)
-    (setq *connected-databases* (delete database *connected-databases*))
-    (when (eq database *default-database*)
-      (setq *default-database* (car *connected-databases*)))
-    (change-class database 'closed-database)
-    t))
-
-
+database was disconnected and only one other connection exists.
+if the database is from a pool it will be released to this pool."
+  (if (conn-pool database)
+      (release-to-pool database)
+    (when (database-disconnect database)
+      (setq *connected-databases* (delete database *connected-databases*))
+      (when (eq database *default-database*)
+	(setq *default-database* (car *connected-databases*)))
+      (change-class database 'closed-database)
+      t)))
 
 ;;; Basic operations on databases