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comparison src/org/tmatesoft/hg/internal/ChangelogMonitor.java @ 628:6526d8adbc0f

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Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 22 May 2013 15:52:31 +0200
parents 5c68567b3645
children
comparison
equal deleted inserted replaced
627:5153eb73b18d 628:6526d8adbc0f
17 package org.tmatesoft.hg.internal; 17 package org.tmatesoft.hg.internal;
18 18
19 import org.tmatesoft.hg.core.Nodeid; 19 import org.tmatesoft.hg.core.Nodeid;
20 import org.tmatesoft.hg.core.SessionContext; 20 import org.tmatesoft.hg.core.SessionContext;
21 import org.tmatesoft.hg.repo.HgRepository; 21 import org.tmatesoft.hg.repo.HgRepository;
22 import org.tmatesoft.hg.repo.HgRuntimeException;
22 23
23 /** 24 /**
24 * Track changes to a repository based on recent changelog revision. 25 * Track changes to a repository based on recent changelog revision.
25 * TODO shall be merged with {@link RevlogChangeMonitor} and {@link FileChangeMonitor} into 26 * TODO shall be merged with {@link RevlogChangeMonitor} and {@link FileChangeMonitor} into
26 * a single facility available from {@link SessionContext} 27 * a single facility available from {@link SessionContext}
36 public ChangelogMonitor(HgRepository hgRepo) { 37 public ChangelogMonitor(HgRepository hgRepo) {
37 repo = hgRepo; 38 repo = hgRepo;
38 } 39 }
39 40
40 // memorize the state of the repository's changelog 41 // memorize the state of the repository's changelog
41 public void touch() { 42 public void touch() throws HgRuntimeException {
42 changelogRevCount = repo.getChangelog().getRevisionCount(); 43 changelogRevCount = repo.getChangelog().getRevisionCount();
43 changelogLastRev = safeGetRevision(changelogRevCount-1); 44 changelogLastRev = safeGetRevision(changelogRevCount-1);
44 } 45 }
45 46
46 // if present state doesn't match the one we remember 47 // if present state doesn't match the one we remember
47 public boolean isChanged() { 48 public boolean isChanged() throws HgRuntimeException {
48 int rc = repo.getChangelog().getRevisionCount(); 49 int rc = repo.getChangelog().getRevisionCount();
49 if (rc != changelogRevCount) { 50 if (rc != changelogRevCount) {
50 return true; 51 return true;
51 } 52 }
52 Nodeid r = safeGetRevision(rc-1); 53 Nodeid r = safeGetRevision(rc-1);
53 return !r.equals(changelogLastRev); 54 return !r.equals(changelogLastRev);
54 } 55 }
55 56
56 // handles empty repository case 57 // handles empty repository case
57 private Nodeid safeGetRevision(int revIndex) { 58 private Nodeid safeGetRevision(int revIndex) throws HgRuntimeException {
58 if (revIndex >= 0) { 59 if (revIndex >= 0) {
59 return repo.getChangelog().getRevision(revIndex); 60 return repo.getChangelog().getRevision(revIndex);
60 } 61 }
61 return Nodeid.NULL; 62 return Nodeid.NULL;
62 } 63 }