Mercurial > jhg

annotate src/org/tmatesoft/hg/internal/RevlogStreamFactory.java @ 710:cf200271439a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
KeywordFilter: 'IllegalStateException: need buffer of at least...' during status op for a small file
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 07 Oct 2013 01:56:05 +0200
parents 99ad1e3a4e4d
children
rev   line source
591
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
1 /*
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
2 * Copyright (c) 2013 TMate Software Ltd
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
3 *
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
4 * This program is free software; you can redistribute it and/or modify
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
5 * it under the terms of the GNU General Public License as published by
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
6 * the Free Software Foundation; version 2 of the License.
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
7 *
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
8 * This program is distributed in the hope that it will be useful,
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
11 * GNU General Public License for more details.
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
12 *
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
13 * For information on how to redistribute this software under
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
14 * the terms of a license other than GNU General Public License
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
15 * contact TMate Software at support@hg4j.com
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
16 */
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
17 package org.tmatesoft.hg.internal;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
19 import java.io.File;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
20 import java.lang.ref.SoftReference;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
21 import java.util.HashMap;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
22
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
23 import org.tmatesoft.hg.util.Path;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
24
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
25 /**
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
26 * Factory to create {@link RevlogStream RevlogStreams}, cache-capable.
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
27 *
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
28 * @author Artem Tikhomirov
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
29 * @author TMate Software Ltd.
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
30 */
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
31 public final class RevlogStreamFactory {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
32
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 private final Internals repo;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
34 private final HashMap<Path, SoftReference<RevlogStream>> streamsCache;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
35
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
36
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
37 public RevlogStreamFactory(Internals hgRepo, boolean shallCacheRevlogs) {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
38 repo = hgRepo;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
39 if (shallCacheRevlogs) {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
40 streamsCache = new HashMap<Path, SoftReference<RevlogStream>>();
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
41 } else {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
42 streamsCache = null;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
43 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
44 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
45
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
46 /**
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
47 * Creates a stream for specified file, doesn't cache stream
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
48 */
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
49 /*package-local*/ RevlogStream create(File f) {
608
e1b29756f901 Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
50 return new RevlogStream(repo, f);
591
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
51 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
52
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
53 /**
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
54 * Perhaps, should be separate interface, like ContentLookup
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
55 * @param path - normalized file name
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
56 * @return <code>null</code> if path doesn't resolve to a existing file
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
57 */
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 608
diff changeset
58 /*package-local*/ RevlogStream getStoreFile(Path path, boolean onlyIfExists) {
591
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
59 final SoftReference<RevlogStream> ref = shallCacheRevlogs() ? streamsCache.get(path) : null;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
60 RevlogStream cached = ref == null ? null : ref.get();
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
61 if (cached != null) {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
62 return cached;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
63 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
64 File f = repo.getFileFromDataDir(path);
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 608
diff changeset
65 if (!onlyIfExists || f.exists()) {
591
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
66 RevlogStream s = create(f);
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
67 if (shallCacheRevlogs()) {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
68 streamsCache.put(path, new SoftReference<RevlogStream>(s));
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
69 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
70 return s;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
71 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
72 return null;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
73 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
74
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
75 private boolean shallCacheRevlogs() {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
76 return streamsCache != null;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
77 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
78 }