Mercurial > jhg

annotate src/org/tmatesoft/hg/internal/RevlogStreamFactory.java @ 612:dca70c0b1f74

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Test tags, branches and hgingore information get refreshed on external (and/or internal) change
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 10 May 2013 14:29:35 +0200
parents e1b29756f901
children 99ad1e3a4e4d
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.io.IOException;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
21 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
22 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
23
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
24 import org.tmatesoft.hg.repo.HgInvalidControlFileException;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
25 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
26
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 * 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
29 *
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
30 * @author Artem Tikhomirov
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
31 * @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
32 */
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 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
34
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
35 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
36 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
37
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
38
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
39 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
40 repo = hgRepo;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
41 if (shallCacheRevlogs) {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
42 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
43 } else {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
44 streamsCache = null;
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
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 * 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
50 */
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
51 /*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
52 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
53 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
54
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
55 /**
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
56 * 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
57 * @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
58 * @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
59 */
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
60 /*package-local*/ RevlogStream resolveStoreFile(Path path) {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
61 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
62 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
63 if (cached != null) {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
64 return cached;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
65 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
66 File f = repo.getFileFromDataDir(path);
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
67 if (f.exists()) {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
68 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
69 if (shallCacheRevlogs()) {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
70 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
71 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
72 return s;
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 return null;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
75 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
76
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
77 /*package-local*/ RevlogStream createStoreFile(Path path) throws HgInvalidControlFileException {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
78 File f = repo.getFileFromDataDir(path);
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
79 try {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
80 if (!f.exists()) {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
81 f.getParentFile().mkdirs();
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
82 f.createNewFile();
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
83 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
84 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
85 if (shallCacheRevlogs()) {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
86 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
87 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
88 return s;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
89 } catch (IOException ex) {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
90 throw new HgInvalidControlFileException("Can't create a file in the storage", ex, f);
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
91 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
92 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
93
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
94 private boolean shallCacheRevlogs() {
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
95 return streamsCache != null;
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
96 }
e447384f3771 CommitFacility as internal class; refactored infrastructure around internals (access to RevlogStream)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
97 }