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

[Alex M. <am...@di...>]

That works, thanks.

 

From: m....@go... [mailto:m....@go...] On Behalf Of Georg Hieronimus
Sent: Monday, November 19, 2012 3:38 PM
To: Alex Moir; jgr...@li...
Subject: Re: [jgrapht-users] remove all edges and vertices

 

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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