01: /*
02: * GeoTools - OpenSource mapping toolkit
03: * http://geotools.org
04: * (C) 2002-2006, GeoTools Project Managment Committee (PMC)
05: * (C) 2002, Refractions Reserach Inc.
06: *
07: * This library is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU Lesser General Public
09: * License as published by the Free Software Foundation;
10: * version 2.1 of the License.
11: *
12: * This library is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: */
17: package org.geotools.graph.traverse.basic;
18:
19: import org.geotools.graph.structure.Graphable;
20: import org.geotools.graph.traverse.GraphTraversal;
21: import org.geotools.graph.traverse.GraphWalker;
22:
23: /**
24: * A simple implementation of GraphWalker that does nothing but signal
25: * a graph traversal to continue.
26: *
27: * @see GraphTraversal
28: *
29: * @author Justin Deoliveira, Refractions Research Inc, jdeolive@refractions.net
30: *
31: * @source $URL: http://svn.geotools.org/geotools/tags/2.4.1/modules/extension/graph/src/main/java/org/geotools/graph/traverse/basic/DummyGraphWalker.java $
32: */
33: public class DummyGraphWalker implements GraphWalker {
34:
35: /**
36: * Returns the continue signal.
37: *
38: * @see GraphWalker#visit(Graphable, GraphTraversal)
39: * @see GraphTraversal#CONTINUE
40: */
41: public int visit(Graphable element, GraphTraversal traversal) {
42: return (GraphTraversal.CONTINUE);
43: }
44:
45: /**
46: * Does nothing.
47: *
48: * @see GraphWalker#finish()
49: */
50: public void finish() {
51: }
52:
53: }
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