/**
* This method recursively walks the network, looking for connected substations
*
* @param current_node The node that the walker is currently at
* @param substations A set of found and connected substations
* @param visited_nodes A set of all the nodes that have been visited
*/
private void searchForConnectedSubStations(
PowerGridNode current_node,
Set<PowerGridNode> substations,
Set<PowerGridNode> visited_nodes) {
if (current_node.isSubStation()) substations.add(current_node);
visited_nodes.add(current_node);
for (PowerGridNode neighbour : current_node.getNeighbours()) {
if (visited_nodes.contains(neighbour)) continue;
searchForConnectedSubStations(neighbour, substations, visited_nodes);
}
}
