Line | Hits | Source |
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1 | /* | |
2 | * Copyright (c) 2004, the JUNG Project and the Regents of the University of | |
3 | * California All rights reserved. | |
4 | * | |
5 | * This software is open-source under the BSD license; see either "license.txt" | |
6 | * or http://jung.sourceforge.net/license.txt for a description. | |
7 | * | |
8 | * Created on Jun 18, 2004 | |
9 | */ | |
10 | package edu.uci.ics.jung.graph.predicates; | |
11 | ||
12 | import edu.uci.ics.jung.graph.ArchetypeVertex; | |
13 | import edu.uci.ics.jung.graph.Vertex; | |
14 | import edu.uci.ics.jung.graph.predicates.VertexPredicate; | |
15 | ||
16 | /** | |
17 | * Evaluates to <code>true</code> if and only if | |
18 | * the specified vertex is a sink, i.e., has | |
19 | * no outgoing directed edges. | |
20 | * | |
21 | * @author Joshua O'Madadhain | |
22 | */ | |
23 | public class SinkVertexPredicate extends VertexPredicate | |
24 | { | |
25 | protected static SinkVertexPredicate instance; | |
26 | ||
27 | protected SinkVertexPredicate() | |
28 | { | |
29 | 0 | super(); |
30 | 0 | } |
31 | ||
32 | public static SinkVertexPredicate getInstance() | |
33 | { | |
34 | 0 | if (instance == null) |
35 | 0 | instance = new SinkVertexPredicate(); |
36 | 0 | return instance; |
37 | } | |
38 | ||
39 | /** | |
40 | * @see edu.uci.ics.jung.graph.predicates.VertexPredicate#evaluateVertex(edu.uci.ics.jung.graph.ArchetypeVertex) | |
41 | */ | |
42 | public boolean evaluateVertex(ArchetypeVertex arg0) | |
43 | { | |
44 | 0 | if (! (arg0 instanceof Vertex)) |
45 | 0 | return false; |
46 | ||
47 | 0 | return (((Vertex)arg0).outDegree() == 0); |
48 | } | |
49 | } |
this report was generated by version 1.0.5 of jcoverage. |
copyright © 2003, jcoverage ltd. all rights reserved. |