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comparison src/org/dancres/blitz/entry/LeaseTrackerFactory.java @ 0:3dc0c5604566

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Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
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-1:000000000000 0:3dc0c5604566
1 package org.dancres.blitz.entry;
2
3 import java.io.IOException;
4
5 import org.dancres.blitz.lease.LeaseReaper;
6 import org.dancres.blitz.lease.ReapFilter;
7
8 import org.dancres.blitz.oid.Allocator;
9
10 class LeaseTrackerFactory {
11 /**
12 Create a LeaseTracker capable of managing all leases for a particular
13 entry type which is using a particular Allocator instance to assign ids.
14 */
15 static LeaseTracker getTracker(String aType, Allocator anAllocator)
16 throws IOException {
17
18 if (EntryRepositoryFactory.getReaper().isActive())
19 return new LeaseTrackerImpl(aType,
20 anAllocator.getMaxZoneId());
21 else
22 return new NullTrackerImpl(aType);
23 }
24
25 private static class NullTrackerImpl implements LeaseTracker {
26 private String theType;
27
28 NullTrackerImpl(String aType) {
29 // System.err.println("NullTracker: " + aType);
30 theType = aType;
31 }
32
33 public void bringOutTheDead(EntryReaper aReaper) {
34 // Do nothing
35 }
36
37 public void delete(PersistentEntry anEntry) throws IOException {
38 // Do nothing
39 }
40
41 public void update(PersistentEntry anEntry) throws IOException {
42 // Do nothing
43 }
44
45 public void write(PersistentEntry anEntry) throws IOException {
46 // Do nothing
47 }
48
49 public void close() throws IOException {
50 // Do nothing
51 }
52
53 public void delete() throws IOException {
54 // Do nothing
55 }
56 }
57 }