Mercurial > jhg

comparison src/org/tmatesoft/hg/core/HgChangesetTreeHandler.java @ 328:a674b8590362

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Move file tree history to upper API level
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 05 Oct 2011 07:13:57 +0200
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children 189dc6dc1c3e
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327:3f09b8c19142 328:a674b8590362
1 /*
2 * Copyright (c) 2011 TMate Software Ltd
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * For information on how to redistribute this software under
14 * the terms of a license other than GNU General Public License
15 * contact TMate Software at support@hg4j.com
16 */
17 package org.tmatesoft.hg.core;
18
19 import java.util.Collection;
20
21 import org.tmatesoft.hg.util.CancelledException;
22 import org.tmatesoft.hg.util.Pair;
23
24 /**
25 *
26 * @author Artem Tikhomirov
27 * @author TMate Software Ltd.
28 */
29 public interface HgChangesetTreeHandler {
30 /**
31 * @param entry access to various pieces of information about current tree node. Instances might be
32 * reused across calls and shall not be kept by client's code
33 */
34 public void next(HgChangesetTreeHandler.TreeElement entry) throws CancelledException;
35
36 interface TreeElement {
37 /**
38 * Revision of the revlog being iterated. For example, when walking file history, return value represents file revisions.
39 *
40 * @return revision of the revlog being iterated.
41 */
42 public Nodeid fileRevision();
43 /**
44 * @return changeset associated with the current revision
45 */
46 public HgChangeset changeset();
47
48 /**
49 * Lightweight alternative to {@link #changeset()}, identifies changeset in which current file node has been modified
50 * @return changeset {@link Nodeid}
51 */
52 public Nodeid changesetRevision();
53
54 /**
55 * Node, these are not necessarily in direct relation to parents of changeset from {@link #changeset()}
56 * @return changesets that correspond to parents of the current file node, either pair element may be <code>null</code>.
57 */
58 public Pair<HgChangeset, HgChangeset> parents();
59
60 /**
61 * Lightweight alternative to {@link #parents()}, give {@link Nodeid nodeids} only
62 * @return two values, neither is <code>null</code>, use {@link Nodeid#isNull()} to identify parent not set
63 */
64 public Pair<Nodeid, Nodeid> parentRevisions();
65
66 public Collection<HgChangeset> children();
67
68 /**
69 * Lightweight alternative to {@link #children()}.
70 * @return never <code>null</code>
71 */
72 public Collection<Nodeid> childRevisions();
73 }
74 }