r2006: debian

[clsql.git] / sql / sql.cl

diff --git a/sql/sql.cl b/sql/sql.cl
index 92d0e4452aeb50185bc974003eb3b0456797f404..ed18c0b28a33c4ee0e65e38f95eab5f6a7a9c6f8 100644 (file)
--- 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 1.10 2002/03/29 08:23:38 kevin Exp $
+;;;; $Id: sql.cl,v 1.16 2002/05/11 14:31:10 marc.battyani Exp $
 ;;;;
 ;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
 ;;;; and Copyright (c) 1999-2001 by Pierre R. Mai
@@ -35,6 +35,10 @@
 (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*))
@@ -72,8 +76,6 @@ 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
@@ -91,31 +93,37 @@ 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))
@@ -123,24 +131,24 @@ 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
 
@@ -266,5 +274,20 @@ specified in output-type-spec and returned like in MAP."
                    ,@body))
             (database-dump-result-set ,result-set ,db)))))))
 
+;;; Marc Battyani : Large objects support
+
+(defun create-large-object (&key (database *default-database*))
+  "Creates a new large object in the database and returns the object identifier"
+  (database-create-large-object database))
+
+(defun write-large-object (object-id data &key (database *default-database*))
+  "Writes data to the large object"
+  (database-write-large-object object-id data database))
 
+(defun read-large-object (object-id &key (database *default-database*))
+  "Reads the large object content"
+  (database-read-large-object object-id database))
 
+(defun delete-large-object (object-id &key (database *default-database*))
+  "Deletes the large object in the database"
+  (database-delete-large-object object-id database))