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1
5 package org.h2.util;
6
7 import java.util.Comparator  ;
8
9 import org.h2.engine.Constants;
10 import org.h2.message.Message;
11
12 public abstract class CacheObject {
13 private boolean changed;
14 public CacheObject previous, next, chained;
15 public int cacheQueue;
16 private int blockCount;
17 private int pos;
18
19 public static void sort(ObjectArray recordList) {
20 recordList.sort(new Comparator () {
21 public int compare(Object a, Object b) {
22 int pa = ((CacheObject) a).getPos();
23 int pb = ((CacheObject) b).getPos();
24 return pa==pb ? 0 : (pa<pb ? -1 : 1);
25 }
26 });
27 }
28
29 public void setBlockCount(int size) {
30 this.blockCount = size;
31 }
32
33 public int getBlockCount() {
34 return blockCount;
35 }
36
37 public void setPos(int pos) {
38 if(Constants.CHECK && (previous!=null || next!=null || chained!=null)) {
39 throw Message.getInternalError("setPos too late");
40 }
41 this.pos = pos;
42 }
43
44 public int getPos() {
45 return pos;
46 }
47
48 public boolean isChanged() {
49 return changed;
50 }
51
52 public void setChanged(boolean b) {
53 changed = b;
54 }
55
56 public boolean isPinned() {
57 return false;
58 }
59
60 public boolean canRemove() {
61 return true;
62 }
63
64 }
65 |
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