1 package net.sumaris.core.util.type;
2
3 /*-
4 * #%L
5 * SUMARiS:: Core shared
6 * %%
7 * Copyright (C) 2018 - 2019 SUMARiS Consortium
8 * %%
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation, either version 3 of the
12 * License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public
20 * License along with this program. If not, see
21 * <http://www.gnu.org/licenses/gpl-3.0.html>.
22 * #L%
23 */
24
25 import java.util.Iterator;
26
27 public class SequenceIterator implements Iterator<Integer> {
28
29 private int sequence = 0;
30 private int increment = 1;
31
32 public SequenceIterator() {
33 sequence = 0;
34 this.increment = 1;
35 }
36
37 public SequenceIterator(int initValue, int increment) {
38 sequence = initValue;
39 this.increment = increment;
40 }
41
42 @Override
43 public boolean hasNext() {
44 return true;
45 }
46
47 @Override
48 public Integer next() {
49 this.sequence += increment;
50 return sequence;
51 }
52
53 @Override
54 public void remove() {
55 // LP : special behavior for this sequence iterator : it decrement the sequence by one increment
56 sequence -= increment;
57 // the next call of next() will return the actual sequence number
58 }
59
60 public int getCurrentValue() {
61 return sequence;
62 }
63
64 }