/** @see GraphListener#edgeRemoved(GraphEdgeChangeEvent) */
public void edgeRemoved(GraphEdgeChangeEvent<V, E> e) {
E edge = e.getEdge();
V source = graph.getEdgeSource(edge);
V target = graph.getEdgeTarget(edge);
if (successorMap.containsKey(source)) {
successorMap.get(source).removeNeighbor(target);
}
if (predecessorMap.containsKey(target)) {
predecessorMap.get(target).removeNeighbor(source);
}
}
/** @see GraphListener#edgeAdded(GraphEdgeChangeEvent) */
public void edgeAdded(GraphEdgeChangeEvent<V, E> e) {
E edge = e.getEdge();
V source = graph.getEdgeSource(edge);
V target = graph.getEdgeTarget(edge);
// if a map does not already contain an entry,
// then skip addNeighbor, since instantiating the map
// will take care of processing the edge (which has already
// been added)
if (successorMap.containsKey(source)) {
getSuccessors(source).addNeighbor(target);
} else {
getSuccessors(source);
}
if (predecessorMap.containsKey(target)) {
getPredecessors(target).addNeighbor(source);
} else {
getPredecessors(target);
}
}