Re: [jgrapht-users] remove all edges and vertices

[Georg H. <geo...@go...>]

i use this:

public static <V,E> void removeAllEdges(Graph<V, E> graph) {
LinkedList<E> copy = new LinkedList<E>();
 for (E e : graph.edgeSet()) {
copy.add(e);
}
 graph.removeAllEdges(copy);
}

public static <V,E> void clearGraph(Graph<V, E> graph) {
 removeAllEdges(graph);
removeAllVertices(graph);
}

public static <V,E> void removeAllVertices(Graph<V, E> graph) {
 LinkedList<V> copy = new LinkedList<V>();
for (V v : graph.vertexSet()) {
 copy.add(v);
}
graph.removeAllVertices(copy);
 }

On 20 November 2012 00:23, Alex Moir <am...@di...> wrote:

> Does anyone know a way to reset an entire graph?  I tried the following
> methods and in all cases I got a ConcurrentModificationException…****
>
> ** **
>
> Attempt #1****
>
>      graph.removeAllEdges( graph.edgeSet() );****
>
>      graph.removeAllVertices( graph.vertexSet() );****
>
> ** **
>
> Attempt #2****
>
>       Set<RelationshipEdge> allEdges = graph.edgeSet();****
>
>      for ( RelationshipEdge aEdge : allEdges )****
>
>       { ****
>
>          graph.removeEdge( aEdge );****
>
>       }****
>
> ** **
>
> Attempt #3****
>
>       Set<RelationshipEdge> allEdges = graph.edgeSet();****
>
>       allEdges.clear();****
>
> ** **
>
> ** **
>
> Thanks,****
>
> Alex****
>
>
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