refactor(BaseGraph): improve performance of get_components

Signed-off-by: Vincent Koppen <[email protected]>

src/power_grid_model_ds/_core/model/graphs/models/base.py

@@ -250,7 +250,8 @@ def get_all_paths(self, ext_start_node_id: int, ext_end_node_id: int) -> list[li
 
     def get_components(self, substation_nodes: NDArray[np.int32]) -> list[list[int]]:
         """Returns all separate components when the substation_nodes are removed of the graph as lists"""
-        internal_components = self._get_components(substation_nodes=self._externals_to_internals(substation_nodes))
+        with self.tmp_remove_nodes(substation_nodes):
+            internal_components = self._get_components()
         return [self._internals_to_externals(component) for component in internal_components]
 
     def get_connected(

src/power_grid_model_ds/_core/model/graphs/models/rustworkx.py

@@ -84,11 +84,8 @@ def _get_shortest_path(self, source: int, target: int) -> tuple[list[int], int]:
     def _get_all_paths(self, source: int, target: int) -> list[list[int]]:
         return list(rx.all_simple_paths(self._graph, source, target))
 
-    def _get_components(self, substation_nodes: list[int]) -> list[list[int]]:
-        no_os_graph = self._graph.copy()
-        for os_node in substation_nodes:
-            no_os_graph.remove_node(os_node)
-        components = rx.connected_components(no_os_graph)
+    def _get_components(self) -> list[list[int]]:
+        components = rx.connected_components(self._graph)
         return [list(component) for component in components]
 
     def _get_connected(self, node_id: int, nodes_to_ignore: list[int], inclusive: bool = False) -> list[int]: