public <T extends Edge> T getEdgeToward(int index) {
T e;
elementLock.lock();
e = sg.getEdge(wrappedElement.getEdgeToward(index).getIndex());
elementLock.unlock();
return e;
}
public <T extends Edge> T getEdgeBetween(String id) {
T e;
elementLock.lock();
e = sg.getEdge(wrappedElement.getEdgeBetween(id).getIndex());
elementLock.unlock();
return e;
}
public <T extends Edge> T getEdgeFrom(Node n) {
T e;
elementLock.lock();
e = sg.getEdge(wrappedElement.getEdgeFrom(n).getIndex());
elementLock.unlock();
return e;
}
public <T extends Edge> T getLeavingEdge(int i) {
T e;
elementLock.lock();
e = sg.getEdge(wrappedElement.getLeavingEdge(i).getIndex());
elementLock.unlock();
return e;
}
public Collection<Edge> getEdgeSet() {
ArrayList<Edge> l;
Iterator<Edge> it;
elementLock.lock();
l = new ArrayList<Edge>(wrappedElement.getDegree());
it = wrappedElement.getEachEdge().iterator();
while (it.hasNext()) l.add(sg.getEdge(it.next().getIndex()));
elementLock.unlock();
return l;
}
