private RouteNodeInstance determineStartNode(
Collection<RouteNodeInstance> activeNodes, MovePoint movePoint)
throws InvalidActionTakenException {
RouteNodeInstance startNodeInstance = null;
for (RouteNodeInstance nodeInstance : activeNodes) {
if (nodeInstance.getName().equals(movePoint.getStartNodeName())) {
if (startNodeInstance != null) {
throw new InvalidActionTakenException(
"More than one active node exists with the given name: "
+ movePoint.getStartNodeName());
}
startNodeInstance = nodeInstance;
}
}
if (startNodeInstance == null) {
throw new InvalidActionTakenException(
"Could not locate an active node with the given name: " + movePoint.getStartNodeName());
}
return startNodeInstance;
}
private String displayMovePoint(MovePoint movePoint) {
return "fromNode="
+ movePoint.getStartNodeName()
+ ", stepsToMove="
+ movePoint.getStepsToMove();
}