|
1
5 package org.h2.index;
6
7 import java.sql.SQLException  ;
8
9 import org.h2.message.Message;
10 import org.h2.result.Row;
11 import org.h2.value.Value;
12 import org.h2.value.ValueLong;
13
14 public class RangeCursor implements Cursor {
15
16 private boolean beforeFirst;
17 private long current;
18 private Row currentRow;
19 private long min, max;
20
21 RangeCursor(long min, long max) {
22 this.min = min;
23 this.max = max;
24 beforeFirst = true;
25 }
26
27 public Row get() {
28 return currentRow;
29 }
30
31 public int getPos() {
32 throw Message.getInternalError();
33 }
34
35 public boolean next() throws SQLException {
36 if(beforeFirst) {
37 beforeFirst = false;
38 current = min;
39 } else {
40 current++;
41 }
42 currentRow = new Row(new Value[]{ValueLong.get(current)});
43 return current <= max;
44 }
45
46 }
47 |
Popular Tags |
Java API By Example, From Geeks To Geeks.