From 7ee6a7473b104e1912221714215392306ecf2e0e Mon Sep 17 00:00:00 2001
From: Huynh Tran <nthuynh75@gmail.com>
Date: Fri, 17 Jun 2005 22:11:43 +0000
Subject: Force a user class to use the Storage singleton instead of
 instantiating DALStorage directly.

---
 src/dalstorage.h | 45 +++++++++++++++++++++++++++++++++------------
 1 file changed, 33 insertions(+), 12 deletions(-)

(limited to 'src')

diff --git a/src/dalstorage.h b/src/dalstorage.h
index 0bde7d33..a95ede9f 100644
--- a/src/dalstorage.h
+++ b/src/dalstorage.h
@@ -37,23 +37,18 @@ namespace tmwserv
 
 /**
  * A storage class that relies on DAL.
+ *
+ * Notes:
+ *     - this class cannot be instanciated nor duplicated in order to force
+ *       a user class to use the Storage singleton.
  */
 class DALStorage: public Storage
 {
-    public:
-        /**
-         * Constructor.
-         */
-        DALStorage(void);
-
-
-        /**
-         * Destructor.
-         */
-        ~DALStorage(void)
-            throw();
+    // friend so that Storage can call the constructor.
+    friend class Storage;
 
 
+    public:
         /**
          * Save changes to the database permanently.
          */
@@ -82,6 +77,32 @@ class DALStorage: public Storage
 
 
     private:
+        /**
+         * Constructor.
+         */
+        DALStorage(void);
+
+
+        /**
+         * Destructor.
+         */
+        ~DALStorage(void)
+            throw();
+
+
+        /**
+         * Copy constructor.
+         */
+        DALStorage(const DALStorage& rhs);
+
+
+        /**
+         * Assignment operator.
+         */
+        DALStorage&
+        operator=(const DALStorage& rhs);
+
+
         /**
          * Connect to the database and initialize it if necessary.
          */
-- 
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