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comparison src/org/tmatesoft/hg/core/HgInvalidRevisionException.java @ 347:8da7ade36c57

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Add specific IAE subclass to handle wrong (e.g. outdated after rollback) revisions
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 22 Nov 2011 05:25:57 +0100
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children 8107b95f4280
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346:6d2c6b2469fc 347:8da7ade36c57
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 org.tmatesoft.hg.internal.Experimental;
20 import org.tmatesoft.hg.repo.HgRepository;
21
22 /**
23 * Use of revision or local revision index that is not valid for a given revlog.
24 *
25 * @author Artem Tikhomirov
26 * @author TMate Software Ltd.
27 */
28 @SuppressWarnings("serial")
29 @Experimental(reason="1) Whether to use checked or runtime exception is not yet decided. 2) Perhaps, its use not bound to wrong arguments")
30 public class HgInvalidRevisionException extends IllegalArgumentException {
31 private Nodeid rev;
32 private Integer revIdx;
33 // next two make sense only when revIdx is present
34 private int rangeLeftBoundary = -1, rangeRightBoundary = -1;
35
36 /**
37 *
38 * this exception is not expected to be initialized with another exception, although those who need to,
39 * may still use {@link #initCause(Throwable)}
40 * @param message optional description of the issue
41 * @param revision invalid revision, may be <code>null</code> if revisionIndex is used
42 * @param revisionIndex invalid revision index, may be <code>null</code> if not known and revision is supplied
43 */
44 public HgInvalidRevisionException(String message, Nodeid revision, Integer revisionIndex) {
45 super(message);
46 assert revision != null || revisionIndex != null;
47 rev = revision;
48 revIdx = revisionIndex;
49 }
50
51 public HgInvalidRevisionException(Nodeid revision) {
52 this(null, revision, null);
53 }
54
55 public HgInvalidRevisionException(int revisionIndex) {
56 this(null, null, revisionIndex);
57 }
58
59 public Nodeid getRevision() {
60 return rev;
61 }
62
63 public Integer getRevisionIndex() {
64 return revIdx;
65 }
66
67 public HgInvalidRevisionException setRevision(Nodeid revision) {
68 assert revision != null;
69 rev = revision;
70 return this;
71 }
72
73 // int, not Integer is on purpose, not to clear exception completely
74 public HgInvalidRevisionException setRevisionIndex(int revisionIndex) {
75 revIdx = revisionIndex;
76 return this;
77 }
78
79 public HgInvalidRevisionException setRevisionIndex(int revisionIndex, int rangeLeft, int rangeRight) {
80 revIdx = revisionIndex;
81 rangeLeftBoundary = rangeLeft;
82 rangeRightBoundary = rangeRight;
83 return this;
84 }
85
86 @Override
87 public String getMessage() {
88 String msg = super.getMessage();
89 if (msg != null) {
90 return msg;
91 }
92 StringBuilder sb = new StringBuilder();
93 sb.append('[');
94 if (rev != null) {
95 sb.append(rev.shortNotation());
96 sb.append(' ');
97 }
98 if (revIdx != null) {
99 String sr;
100 switch (revIdx) {
101 case HgRepository.BAD_REVISION : sr = "UNKNOWN"; break;
102 case HgRepository.TIP : sr = "TIP"; break;
103 case HgRepository.WORKING_COPY: sr = "WORKING-COPY"; break;
104 default : sr = revIdx.toString();
105 }
106 if (rangeLeftBoundary != -1 || rangeRightBoundary != -1) {
107 sb.append(String.format("%s is not from [%d..%d]", sr, rangeLeftBoundary, rangeRightBoundary));
108 } else {
109 sb.append(sr);
110 }
111 }
112 sb.append(']');
113 return sb.toString();
114 }
115 }