-ViewBTree::ViewBTree (Canvas::Group *parent, std::string filename, uint block_size):Canvas::Group (*parent, 0, 0),
- BTree (filename, block_size)
+ViewBTree::ViewBTree (Canvas::Group *parent, std::string filename, uint block_size, int type):Canvas::Group (*parent, 0, 0),
+ BTree (filename, block_size, BTree::TYPE_UNIQUE, type)