Line | Hits | Source |
---|---|---|
1 | /* | |
2 | * Created on Mar 17, 2004 | |
3 | * | |
4 | * Copyright (c) 2003, the JUNG Project and the Regents of the University | |
5 | * of California | |
6 | * All rights reserved. | |
7 | * | |
8 | * This software is open-source under the BSD license; see either | |
9 | * "license.txt" or | |
10 | * http://jung.sourceforge.net/license.txt for a description. | |
11 | */ | |
12 | package edu.uci.ics.jung.graph.predicates; | |
13 | ||
14 | import edu.uci.ics.jung.graph.ArchetypeEdge; | |
15 | ||
16 | ||
17 | /** | |
18 | * A predicate that checks to see whether an edge's user | |
19 | * data repository contains | |
20 | * the constructor-specified (key,datum) pair. This predicate | |
21 | * may be used as a constraint. | |
22 | */ | |
23 | public class UserDatumEdgePredicate extends EdgePredicate | |
24 | { | |
25 | public static final String message = "UserDatumEdgePredicate: "; | |
26 | private Object datum; | |
27 | private Object key; | |
28 | ||
29 | public UserDatumEdgePredicate(Object key, Object datum) | |
30 | 3 | { |
31 | 3 | if (key == null) |
32 | 0 | throw new IllegalArgumentException("UserDatumEdgePredicate " + |
33 | "key must be non-null"); | |
34 | 3 | this.datum = datum; |
35 | 3 | this.key = key; |
36 | 3 | } |
37 | ||
38 | /** | |
39 | * Returns <code>true</code> if the datum stored by <code>e</code> with | |
40 | * key value <code>key</code> (in the user data repository) is | |
41 | * <code>datum</code>. | |
42 | * | |
43 | * @see edu.uci.ics.jung.utils.UserData | |
44 | */ | |
45 | public boolean evaluateEdge(ArchetypeEdge e) | |
46 | { | |
47 | 23 | Object value = e.getUserDatum(key); |
48 | 23 | return ((datum == null && value == null) || datum.equals(value)); |
49 | // return (e.getUserDatum(key).equals(datum)); | |
50 | } | |
51 | ||
52 | public String toString() | |
53 | { | |
54 | 1 | return message + "(" + key + ", " + datum + ")"; |
55 | } | |
56 | ||
57 | /** | |
58 | * Tests equality based on underlying objects | |
59 | */ | |
60 | public boolean equals( Object o ) { | |
61 | 13 | if (! (o instanceof UserDatumEdgePredicate)) |
62 | 11 | return false; |
63 | 2 | UserDatumEdgePredicate udep = (UserDatumEdgePredicate) o; |
64 | 2 | return ( udep.datum.equals( datum ) && udep.key.equals(key)); |
65 | } | |
66 | ||
67 | public int hashCode() { | |
68 | 0 | return datum.hashCode() + key.hashCode(); |
69 | } | |
70 | ||
71 | /** | |
72 | * Returns the user data key which partially defines this predicate. | |
73 | */ | |
74 | public Object getKey() | |
75 | { | |
76 | 0 | return key; |
77 | } | |
78 | ||
79 | /** | |
80 | * Returns the user datum which partially defines this predicate. | |
81 | */ | |
82 | public Object getDatum() | |
83 | { | |
84 | 0 | return datum; |
85 | } | |
86 | } |
this report was generated by version 1.0.5 of jcoverage. |
copyright © 2003, jcoverage ltd. all rights reserved. |