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.structure;
18:
19: /**
20: * An interface in which to implement a visitor pattern with components of a
21: * graph.
22: *
23: * @author Justin Deoliveira, Refractions Research Inc, jdeolive@refractions.net
24: *
25: * @source $URL: http://svn.geotools.org/geotools/tags/2.4.1/modules/extension/graph/src/main/java/org/geotools/graph/structure/GraphVisitor.java $
26: */
27: public interface GraphVisitor {
28:
29: /**
30: * Presents the visitor with the component to visit.
31: *
32: * @param component The component being visited.
33: *
34: * @return An integer signal value back to the caller.
35: */
36: public int visit(Graphable component);
37: }
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