/** @see Graph#vertexSet() */
public Set<V> vertexSet() {
if (unmodifiableVertexSet == null) {
unmodifiableVertexSet = Collections.unmodifiableSet(specifics.getVertexSet());
}
return unmodifiableVertexSet;
}
/**
* A lazy build of unmodifiable list of vertex edges
*
* @return
*/
public Set<EE> getUnmodifiableVertexEdges() {
if (unmodifiableVertexEdges == null) {
unmodifiableVertexEdges = Collections.unmodifiableSet(vertexEdges);
}
return unmodifiableVertexEdges;
}
/**
* A lazy build of unmodifiable outgoing edge set.
*
* @return
*/
public Set<EE> getUnmodifiableOutgoingEdges() {
if (unmodifiableOutgoing == null) {
unmodifiableOutgoing = Collections.unmodifiableSet(outgoing);
}
return unmodifiableOutgoing;
}
/** {@inheritDoc} */
@Override
public Set<E> getMatching() {
if (matching == null) {
matching = findMatch();
}
return Collections.unmodifiableSet(matching);
}
/** @see Graph#edgeSet() */
public Set<E> edgeSet() {
if (unmodifiableEdgeSet == null) {
unmodifiableEdgeSet = Collections.unmodifiableSet(edgeMap.keySet());
}
return unmodifiableEdgeSet;
}
public Set<E> outgoingEdgesOf(V vertex) {
Set<E> res = new HashSet<E>();
if (getG1().containsVertex(vertex)) {
res.addAll(getG1().outgoingEdgesOf(vertex));
}
if (getG2().containsVertex(vertex)) {
res.addAll(getG2().outgoingEdgesOf(vertex));
}
return Collections.unmodifiableSet(res);
}
public Set<E> getAllEdges(V sourceVertex, V targetVertex) {
Set<E> res = new HashSet<E>();
if (g1.containsVertex(sourceVertex) && g1.containsVertex(targetVertex)) {
res.addAll(g1.getAllEdges(sourceVertex, targetVertex));
}
if (g2.containsVertex(sourceVertex) && g2.containsVertex(targetVertex)) {
res.addAll(g2.getAllEdges(sourceVertex, targetVertex));
}
return Collections.unmodifiableSet(res);
}
public Set<E> edgesOf(V vertex) {
Set<E> res = new HashSet<E>();
if (g1.containsVertex(vertex)) {
res.addAll(g1.edgesOf(vertex));
}
if (g2.containsVertex(vertex)) {
res.addAll(g2.edgesOf(vertex));
}
return Collections.unmodifiableSet(res);
}
/** @see Graph#edgesOf(Object) */
public Set<E> edgesOf(V vertex) {
ArrayUnenforcedSet<E> inAndOut = new ArrayUnenforcedSet<E>(getEdgeContainer(vertex).incoming);
inAndOut.addAll(getEdgeContainer(vertex).outgoing);
// we have two copies for each self-loop - remove one of them.
if (allowingLoops) {
Set<E> loops = getAllEdges(vertex, vertex);
for (int i = 0; i < inAndOut.size(); ) {
Object e = inAndOut.get(i);
if (loops.contains(e)) {
inAndOut.remove(i);
loops.remove(e); // so we remove it only once
} else {
i++;
}
}
}
return Collections.unmodifiableSet(inAndOut);
}
public Set<V> vertexSet() {
Set<V> res = new HashSet<V>();
res.addAll(g1.vertexSet());
res.addAll(g2.vertexSet());
return Collections.unmodifiableSet(res);
}
public Set<E> edgeSet() {
Set<E> res = new HashSet<E>();
res.addAll(g1.edgeSet());
res.addAll(g2.edgeSet());
return Collections.unmodifiableSet(res);
}