Auto connect to DB on first query

code/database/driver/abstract.php

@@ -196,10 +196,20 @@ abstract function setDatabase($database);
      * Provides access to the underlying database connection. Useful for when
      * you need to call a proprietary method such as postgresql's lo_* methods
      *
+     * @param bool $auto_connect If connection hasn't been established, auto connect
      * @return resource
+     * @throws \RuntimeException if auto connection fails
      */
-    public function getConnection()
+    public function getConnection($auto_connect = true)
     {
+        if (!$this->isConnected() && $auto_connect) {
+            $this->connect();
+
+            if (!$this->isConnected()) {
+                throw new \RuntimeException('Database auto connection failed');
+            }
+        }
+
         return $this->_connection;
     }
 

code/database/driver/interface.php

@@ -44,9 +44,11 @@ public function disconnect();
      * Provides access to the underlying database connection. Useful for when you need to call a proprietary method
      * on the database driver
      *
+     * @param bool $auto_connect If connection hasn't been established, auto connect
      * @return resource
+     * @throws \RuntimeException if auto connection fails
      */
-    public function getConnection();
+    public function getConnection($auto_connect = true);
 
     /**
      * Set the connection