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Java > Open Source Codes > com > quadcap > sql > lock > SortedArrayIterator


1 package com.quadcap.sql.lock;
2
3 /* Copyright 1999 - 2003 Quadcap Software. All rights reserved.
4  *
5  * This software is distributed under the Quadcap Free Software License.
6  * This software may be used or modified for any purpose, personal or
7  * commercial. Open Source redistributions are permitted. Commercial
8  * redistribution of larger works derived from, or works which bundle
9  * this software requires a "Commercial Redistribution License"; see
10  * http://www.quadcap.com/purchase.
11  *
12  * Redistributions qualify as "Open Source" under one of the following terms:
13  *
14  * Redistributions are made at no charge beyond the reasonable cost of
15  * materials and delivery.
16  *
17  * Redistributions are accompanied by a copy of the Source Code or by an
18  * irrevocable offer to provide a copy of the Source Code for up to three
19  * years at the cost of materials and delivery. Such redistributions
20  * must allow further use, modification, and redistribution of the Source
21  * Code under substantially the same terms as this license.
22  *
23  * Redistributions of source code must retain the copyright notices as they
24  * appear in each source code file, these license terms, and the
25  * disclaimer/limitation of liability set forth as paragraph 6 below.
26  *
27  * Redistributions in binary form must reproduce this Copyright Notice,
28  * these license terms, and the disclaimer/limitation of liability set
29  * forth as paragraph 6 below, in the documentation and/or other materials
30  * provided with the distribution.
31  *
32  * The Software is provided on an "AS IS" basis. No warranty is
33  * provided that the Software is free of defects, or fit for a
34  * particular purpose.
35  *
36  * Limitation of Liability. Quadcap Software shall not be liable
37  * for any damages suffered by the Licensee or any third party resulting
38  * from use of the Software.
39  */
40
41 import java.util.Iterator JavaDoc;
42
43 import com.quadcap.util.Debug;
44
45 /**
46  *
47  *
48  * @author Stan Bailes
49  */
50 public class SortedArrayIterator implements Iterator JavaDoc {
51     SortedArray array;
52     int pos;
53     
54     public SortedArrayIterator(SortedArray array) {
55         this.array = array;
56     }
57
58     void position(Object JavaDoc obj) {
59         pos = array.find(obj);
60         if (pos < 0) {
61             pos = 0 - (pos + 1);
62         }
63     }
64
65     public boolean hasNext() {
66         return pos < array.size();
67     }
68     
69     public Object JavaDoc next() {
70         if (pos < array.size()) {
71             return array.get(pos++);
72         }
73         return null;
74     }
75
76     /**
77      * Remove the object that we just returned.
78      */
79     public void remove() {
80         array.removeAt(--pos);
81     }
82         
83 }
84
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