Mercurial > jhg

annotate src/org/tmatesoft/hg/internal/RevlogDelegate.java @ 702:992fa84e7885

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Reference ssh-dependant class by the fq name to avoid runtime dependency from the ssh library
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 08 Aug 2013 21:32:22 +0200
parents 053bb4397bf9
children
rev   line source
695
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
1 /*
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
2 * Copyright (c) 2013 TMate Software Ltd
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
3 *
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
4 * This program is free software; you can redistribute it and/or modify
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
5 * it under the terms of the GNU General Public License as published by
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
6 * the Free Software Foundation; version 2 of the License.
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
7 *
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
8 * This program is distributed in the hope that it will be useful,
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
11 * GNU General Public License for more details.
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
12 *
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
13 * For information on how to redistribute this software under
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
14 * the terms of a license other than GNU General Public License
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
15 * contact TMate Software at support@hg4j.com
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
16 */
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
17 package org.tmatesoft.hg.internal;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
19 import org.tmatesoft.hg.core.Nodeid;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
20 import org.tmatesoft.hg.internal.RevlogStream.Inspector;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
21 import org.tmatesoft.hg.repo.HgRepository;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
22 import org.tmatesoft.hg.repo.HgRuntimeException;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
23
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
24 /**
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
25 * Does almost nothing, facilitates chains of inspectors and sharing certain information between them
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
26 *
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
27 * @author Artem Tikhomirov
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
28 * @author TMate Software Ltd.
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
29 */
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
30 public abstract class RevlogDelegate implements RevlogStream.Inspector {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
31
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
32 private final Inspector next;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 private Nodeid nid;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
34 private final RevlogDelegate nextAsRD;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
35
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
36 protected RevlogDelegate(RevlogStream.Inspector nextInChain) {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
37 next = nextInChain;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
38 if (nextInChain instanceof RevlogDelegate) {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
39 // additional benefits
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
40 nextAsRD = (RevlogDelegate) nextInChain;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
41 } else {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
42 nextAsRD = null;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
43 }
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
44 }
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
45
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
46 /**
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
47 * iterates index only and ensures pre/post processing is invoked for the chain
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
48 */
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
49 public void walk(HgRepository hgRepo, RevlogStream stream, int from, int to) {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
50 // hgRepo is handy for present uses, but is generally not appropriate,
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
51 // it's ok to refactor and let subclasses get what they need through e.g. a cons
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
52 stream.iterate(from, to, false, this);
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
53 postWalk(hgRepo);
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
54 }
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
55
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
56 // does nothing but gives a chance to delegate to handle the same
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
57 protected void postWalk(HgRepository hgRepo) {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
58 if (nextAsRD != null) {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
59 nextAsRD.postWalk(hgRepo);
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
60 }
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
61 }
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
62
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
63 /**
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
64 * @return Nodeid of current revision if already known, or a new instance otherwise.
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
65 * The value will propagate to subsequent {@link RevlogDelegate RevlogDelegates}, if any
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
66 */
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
67 protected Nodeid getRevision(byte[] nodeid) {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
68 if (nid == null) {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
69 nid = Nodeid.fromBinary(nodeid, 0);
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
70 }
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
71 return nid;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
72 }
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
73
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
74 protected void setRevision(Nodeid nodeid) {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
75 nid = nodeid;
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
76 }
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
77
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
78 public void next(int revisionIndex, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess data) throws HgRuntimeException {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
79 if (next != null) {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
80 if (nextAsRD != null) {
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
81 nextAsRD.setRevision(nid); // null is fine
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
82 }
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
83 next.next(revisionIndex, actualLen, baseRevision, linkRevision, parent1Revision, parent2Revision, nodeid, data);
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
84 }
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
85 nid = null; // forget it, get ready for the next iteration
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
86 }
053bb4397bf9 Refactoring: nice Revlog.indexWalk() implementation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
87 }