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1
5 package org.h2.store;
6
7 import java.sql.SQLException  ;
8
9 import org.h2.util.FileUtils;
10 import org.h2.util.MemoryFile;
11
12 public class MemoryFileStore extends FileStore {
13
14 private MemoryFile memFile;
15
16 public MemoryFileStore(DataHandler handler, String name, byte[] magic) throws SQLException {
17 super(handler, magic);
18 this.name = name;
19 memFile = FileUtils.getMemoryFile(name);
20 memFile.setMagic(magic);
21 }
22
23 public void close() {
24 }
26
27 public long getFilePointer() {
28 return memFile.getFilePointer();
29 }
30
31 public long length() {
32 return memFile.length();
33 }
34
35 public void readFully(byte[] b, int off, int len) throws SQLException {
36 checkPowerOff();
37 memFile.readFully(b, off, len);
38 }
39
40 public void seek(long pos) {
41 memFile.seek(pos);
42 }
43
44 public void setLength(long newLength) throws SQLException {
45 checkPowerOff();
46 memFile.setLength(newLength);
47 }
48
49 public void write(byte[] b, int off, int len) throws SQLException {
50 checkPowerOff();
51 memFile.write(b, off, len);
52 }
53
54 }
55 |
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