Mercurial > jhg

annotate src/org/tmatesoft/hg/internal/RevlogStreamFactory.java @ 686:f1f095e42555

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Annotated file is not always changed in the latest changeset, need to find out last changest it was changed at (iow, diffed to with BlameHelper)
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 25 Jul 2013 22:12:14 +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 }