private String determineFutureNodeName(
RouteNode node, MovePoint movePoint, int currentStep, Set nodesProcessed)
throws InvalidActionTakenException {
if (nodesProcessed.contains(node.getRouteNodeId())) {
throw new InvalidActionTakenException(
"Detected a cycle at node "
+ node.getRouteNodeName()
+ " when attempting to move document.");
}
nodesProcessed.add(node.getRouteNodeId());
if (currentStep == movePoint.getStepsToMove()) {
return node.getRouteNodeName();
}
List nextNodes = node.getNextNodes();
if (nextNodes.size() == 0) {
throw new InvalidActionTakenException(
"Could not proceed forward, there are no more nodes in the route. Halted on step "
+ currentStep);
}
if (nextNodes.size() != 1) {
throw new InvalidActionTakenException(
"Cannot move forward in a multi-branch path. Located "
+ nextNodes.size()
+ " branches. Halted on step "
+ currentStep);
}
return determineFutureNodeName(
(RouteNode) nextNodes.get(0), movePoint, currentStep + 1, nodesProcessed);
}
@Override
public List<String> getNextNodeIds() {
List<String> nextNodeIds = new ArrayList<String>();
if (nextNodeIds != null) {
for (RouteNode nextNode : nextNodes) {
nextNodeIds.add(nextNode.getRouteNodeId().toString());
}
}
return nextNodeIds;
}
@Override
public List<String> getPreviousNodeIds() {
List<String> previousNodeIds = new ArrayList<String>();
if (previousNodes != null) {
for (RouteNode previousNode : previousNodes) {
previousNodeIds.add(previousNode.getRouteNodeId().toString());
}
}
return previousNodeIds;
}