public Object clone() {
State clone = new State();
clone.attribute = (AttributeImpl) attribute.clone();
if (next != null) {
clone.next = (State) next.clone();
}
return clone;
}
@Override
public State clone() {
State clone = new State();
clone.attribute = attribute.clone();
if (next != null) {
clone.next = next.clone();
}
return clone;
}
public StateEditor(State parent, Edge e) {
child = parent.clone();
child.backState = parent;
child.backEdge = e;
// We clear child.next here, since it could have already been set in the
// parent
child.next = null;
if (e == null) {
child.backState = null;
child.hops = 0;
child.vertex = parent.vertex;
child.stateData = child.stateData.clone();
} else {
child.hops = parent.hops + 1;
// be clever
// Note that we use equals(), not ==, here to allow for dynamically
// created vertices
if (e.getFromVertex().equals(e.getToVertex()) && parent.vertex.equals(e.getFromVertex())) {
// TODO LG: We disable this test: the assumption that
// the from and to vertex of an edge are not the same
// is not true anymore: bike rental on/off edges.
traversingBackward = parent.getOptions().isArriveBy();
child.vertex = e.getToVertex();
} else if (parent.vertex.equals(e.getFromVertex())) {
traversingBackward = false;
child.vertex = e.getToVertex();
} else if (parent.vertex.equals(e.getToVertex())) {
traversingBackward = true;
child.vertex = e.getFromVertex();
} else {
// Parent state is not at either end of edge.
LOG.warn("Edge is not connected to parent state: {}", e);
LOG.warn(" from vertex: {}", e.getFromVertex());
LOG.warn(" to vertex: {}", e.getToVertex());
LOG.warn(" parent vertex: {}", parent.vertex);
defectiveTraversal = true;
}
if (traversingBackward != parent.getOptions().isArriveBy()) {
LOG.error(
"Actual traversal direction does not match traversal direction in TraverseOptions.");
defectiveTraversal = true;
}
if (parent.stateData.noThruTrafficState == NoThruTrafficState.INIT
&& !(e instanceof FreeEdge)) {
setNoThruTrafficState(NoThruTrafficState.BETWEEN_ISLANDS);
}
}
}
/**
* Captures the state of all Attributes. The return value can be passed to {@link #restoreState}
* to restore the state of this or another AttributeSource.
*/
public final State captureState() {
final State state = this.getCurrentState();
return (state == null) ? null : state.clone();
}
