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1 package org.prevayler.demos.scalability;
2
3 import java.io.Serializable  ;
4 import java.util.Random ;
5
6
8 public class RecordIterator implements Serializable {
9
10 private int nextRecordId = 0;
11 private final int numberOfRecords;
12 private final Random _random = new Random (0);
13
14
15 public RecordIterator(int numberOfRecords) {
16 this.numberOfRecords = numberOfRecords;
17 }
18
19 public boolean hasNext() {
20 return nextRecordId < numberOfRecords;
21 }
22
23 public Record next() {
24 indicateProgress();
25 return new Record(nextRecordId++, _random);
26 }
27
28 private void indicateProgress() {
29 if (nextRecordId == 0) {
30 out("Creating " + numberOfRecords + " objects...");
31 return;
32 }
33 if (nextRecordId % 100000 == 0) out("" + nextRecordId + "...");
34 }
35
36 static private void out(Object message) {
37 System.out.println(message);
38 }
39 }
40 |
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Java API By Example, From Geeks To Geeks.