refactored the sqlite databse hack for foreign keys support

codepot/src/system/database/DB_driver.php

@@ -150,7 +150,9 @@ class CI_DB_driver {
 					return FALSE;
 				}
 
-				return TRUE;
+				// HYUNG-HWAN
+				//return TRUE;
+				// END HYUNG-HWAN
 			}
 		}
 
@@ -161,9 +163,20 @@ class CI_DB_driver {
 			$this->_execute('PRAGMA foreign_keys=ON');
 		}
 
+		// HYUNG-HWAN
+		$this->db_post_initialize ();
+		// END HYUNG-HWAN
+
 		return TRUE;
 	}
 
+	// HYUNG-HWAN
+	function db_post_initialize ()
+	{
+		return TRUE;
+	}
+	// END HYUNG-HWAN
+
 	// --------------------------------------------------------------------
 
 	/**

codepot/src/system/database/drivers/oci8/oci8_driver.php

@@ -141,6 +141,13 @@ class CI_DB_oci8_driver extends CI_DB {
 		return TRUE;
 	}
 
+	// HYUNG-HWAN
+	function db_post_initialize ()
+	{
+		$this->query ("ALTER SESSION SET NLS_TIMESTAMP_FORMAT='YYYY-MM-DD HH24:MI:SS.FF'");
+	}
+	// END HYUNG-HWAN
+
 	// --------------------------------------------------------------------
 
 	/**

codepot/src/system/database/drivers/pdo/pdo_driver.php

@@ -237,6 +237,17 @@ class CI_DB_pdo_driver extends CI_DB {
 		return TRUE;
 	}
 
+
+	// HYUNG-HWAN - hack to enable foreign keys support in sqlite
+	function db_post_initialize ()
+	{
+		if (preg_match("/^sqlite/", $this->hostname))
+		{
+			$this->_execute('PRAGMA foreign_keys=ON');
+		}
+	}
+	// END HYUNG-HWAN
+
 	// --------------------------------------------------------------------
 
 	/**

codepot/src/system/database/drivers/sqlite/sqlite_driver.php

@@ -143,6 +143,13 @@ class CI_DB_sqlite_driver extends CI_DB {
 		return TRUE;
 	}
 
+	// HYUNG-HWAN - hack to enable foreign keys support in sqlite
+	function db_post_initialize ()
+	{
+		$this->_execute('PRAGMA foreign_keys=ON');
+	}
+	// END HYUNG-HWAN
+
 	// --------------------------------------------------------------------
 
 	/**