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annotate src/org/tmatesoft/hg/repo/HgRuntimeException.java @ 608:e1b29756f901

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Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 07 May 2013 21:27:51 +0200
parents cdd53e5884ae
children
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1 /*
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2 * Copyright (c) 2012 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.repo;
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18
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19 import org.tmatesoft.hg.core.HgException;
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20 import org.tmatesoft.hg.core.HgLibraryFailureException;
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21 import org.tmatesoft.hg.core.Nodeid;
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22 import org.tmatesoft.hg.internal.ExceptionInfo;
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23 import org.tmatesoft.hg.util.Path;
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24
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25 /**
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26 * Almost any method in <b>Hg4J</b> low-level API (@link org.tmatesoft.hg.repo} may throw subclass of this exception
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27 * to indicate unexpected state/condition encountered, flawed data or IO error.
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28 * Since most cases can't be handled in a reasonable manner (other than catch all exceptions and tell client
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29 * something went wrong), and propagating all possible exceptions up through API is dubious task, low-level
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30 * exceptions are made runtime, rooting at this single class.
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31 *
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32 * <p>Hi-level api, {@link org.tmatesoft.hg.core}, where interaction with user-supplied values is more explicit,
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33 * follows different exception strategy, namely checked exceptions rooted at {@link HgException}.
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34 *
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35 * @see HgException
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36 * @see HgLibraryFailureException
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37 * @author Artem Tikhomirov
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38 * @author TMate Software Ltd.
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39 */
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40 @SuppressWarnings("serial")
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41 public abstract class HgRuntimeException extends RuntimeException {
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42
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43 protected final ExceptionInfo<HgRuntimeException> details = new ExceptionInfo<HgRuntimeException>(this);
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44
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45 protected HgRuntimeException(String reason, Throwable cause) {
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46 super(reason, cause);
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47 }
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48
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49 /**
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50 * @return {@link HgRepository#BAD_REVISION} unless revision index was set during exception instantiation
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51 */
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52 public int getRevisionIndex() {
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53 return details.getRevisionIndex();
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54 }
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55
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56 public HgRuntimeException setRevisionIndex(int rev) {
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57 return details.setRevisionIndex(rev);
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58 }
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59
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60 public boolean isRevisionIndexSet() {
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61 return details.isRevisionIndexSet();
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62 }
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64
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65 /**
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66 * @return non-<code>null</code> when revision was supplied at construction time
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67 */
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68 public Nodeid getRevision() {
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69 return details.getRevision();
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70 }
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72 public HgRuntimeException setRevision(Nodeid r) {
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73 return details.setRevision(r);
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74 }
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75
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76 public boolean isRevisionSet() {
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77 return details.isRevisionSet();
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78 }
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79
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80 /**
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81 * @return non-null only if file name was set at construction time
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82 */
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83 public Path getFileName() {
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84 return details.getFileName();
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85 }
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87 public HgRuntimeException setFileName(Path name) {
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88 return details.setFileName(name);
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89 }
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91 @Override
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92 public String toString() {
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93 String base = super.toString();
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94 StringBuilder sb = new StringBuilder();
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95 details.appendDetails(sb);
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96 if (sb.length() == 0) {
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97 return base;
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98 }
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99 return new StringBuilder(base).append(' ').append('(').append(sb).append(')').toString();
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100 }
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101 }