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Java > Open Source Codes > com > jeantessier > dependency > ClosureSelector


1 /*
2  * Copyright (c) 2001-2005, Jean Tessier
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * * Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *
12  * * Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in the
14  * documentation and/or other materials provided with the distribution.
15  *
16  * * Neither the name of Jean Tessier nor the names of his contributors
17  * may be used to endorse or promote products derived from this software
18  * without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */

32
33 package com.jeantessier.dependency;
34
35 import java.util.*;
36
37 public abstract class ClosureSelector implements Visitor {
38     private Collection selectedNodes;
39     private Collection copiedNodes;
40
41     private NodeFactory factory;
42     
43     public ClosureSelector() {
44         reset();
45     }
46     
47     public ClosureSelector(NodeFactory factory) {
48         this();
49         setFactory(factory);
50     }
51
52     public void reset() {
53         selectedNodes = new HashSet();
54         copiedNodes = new HashSet();
55     }
56
57     public NodeFactory getFactory() {
58         return factory;
59     }
60
61     public void setFactory(NodeFactory factory) {
62         this.factory = factory;
63     }
64     
65     public Collection getSelectedNodes() {
66         return selectedNodes;
67     }
68
69     public Collection getCopiedNodes() {
70         return copiedNodes;
71     }
72     
73     public void traverseNodes(Collection nodes) {
74         Iterator i = nodes.iterator();
75         while (i.hasNext()) {
76             ((Node) i.next()).accept(this);
77         }
78     }
79
80     protected void traverseInbound(Collection nodes) {
81         Iterator i = nodes.iterator();
82         while (i.hasNext()) {
83             ((Node) i.next()).acceptInbound(this);
84         }
85     }
86
87     protected void traverseOutbound(Collection nodes) {
88         Iterator i = nodes.iterator();
89         while (i.hasNext()) {
90             ((Node) i.next()).acceptOutbound(this);
91         }
92     }
93 }
94
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