Force a user class to use the Storage singleton instead of instantiating DALStorage directly.

1 files changed, 33 insertions, 12 deletions

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.
          */
@@ -83,6 +78,32 @@ 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.
          */
         void