Mercurial > hg4j

annotate src/org/tmatesoft/hg/internal/RevlogDelegate.java @ 699:a483b2b68a2e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Provisional APIs and respective implementation for http, https and ssh remote repositories
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 08 Aug 2013 19:18:50 +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 }