Examples of org.eclipse.jgit.lib.Repository.resolve()

org.eclipse.jgit.lib.Repository.resolve()
Parse a git revision string and return an object id. Combinations of these operators are supported:
- HEAD, MERGE_HEAD, FETCH_HEAD
- SHA-1: a complete or abbreviated SHA-1
- refs/...: a complete reference name
- short-name: a short reference name under {@code refs/heads}, {@code refs/tags}, or {@code refs/remotes} namespace
- tag-NN-gABBREV: output from describe, parsed by treating {@code ABBREV} as an abbreviated SHA-1.
- id^: first parent of commit id, this is the same as {@code id^1}
- id^0: ensure id is a commit
- id^n: n-th parent of commit id
- id~n: n-th historical ancestor of id, by first parent. {@code id~3} is equivalent to {@code id^1^1^1} or {@code id^^^}.
- id:path: Lookup path under tree named by id
- id^{commit}: ensure id is a commit
- id^{tree}: ensure id is a tree
- id^{tag}: ensure id is a tag
- id^{blob}: ensure id is a blob
The following operators are specified by Git conventions, but are not supported by this method:
- ref@{n}: n-th version of ref as given by its reflog
- ref@{time}: value of ref at the designated time
@param revstr A git object references expression @return an ObjectId or null if revstr can't be resolved to any ObjectId @throws AmbiguousObjectException {@code revstr} contains an abbreviated ObjectId and thisrepository contains more than one object which match to the input abbreviation. @throws IncorrectObjectTypeException the id parsed does not meet the type required to finish applying the operators in the expression. @throws RevisionSyntaxException the expression is not supported by this implementation, or does not meet the standard syntax. @throws IOException on serious errors

    try {
      r = repositoryManager.getRepository(repository);
      if (StringUtils.isEmpty(objectId)) {
        objectId = JGitUtils.getHEADRef(r);
      }
      ObjectId id = r.resolve(objectId);
      if (id == null) {
        return 0;
      }
      RevCommit commit = JGitUtils.getCommit(r, objectId);
      return JGitUtils.getCommitDate(commit).getTime();

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      rw = new PlotWalk(r);
      if (StringUtils.isEmpty(objectId)) {
        objectId = JGitUtils.getHEADRef(r);
      }


      ObjectId id = r.resolve(objectId);
      if (id ==  null) {
        response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
        response.getWriter().append("Bad request");
        return;
      }

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      }
      String ticketPath = toTicketPath(ticket.number);


      TreeWalk treeWalk = null;
      try {
        ObjectId treeId = db.resolve(BRANCH + "^{tree}");


        // Create the in-memory index of the new/updated ticket
        DirCache index = DirCache.newInCore();
        DirCacheBuilder builder = index.builder();

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    assertEquals(Status.OK, rebaseResult.getStatus());


    // Get the HEAD and HEAD~1 commits
    Repository targetRepo = target.getRepository();
    RevWalk revWalk = new RevWalk(targetRepo);
    ObjectId headId = targetRepo.resolve(Constants.HEAD);
    RevCommit root = revWalk.parseCommit(headId);
    revWalk.markStart(root);
    // HEAD
    RevCommit head = revWalk.next();
    // HEAD~1

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  static private String getHead(final Git git, final String path)
      throws Exception {
    try {
      final Repository repo = git.getRepository();
      final ObjectId headId = repo.resolve(Constants.HEAD + "^{commit}");
      final TreeWalk tw = TreeWalk.forPath(repo, path,
          new RevWalk(repo).parseTree(headId));
      return new String(tw.getObjectReader().open(tw.getObjectId(0))
          .getBytes());
    } catch (Exception e) {

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      return new SubmoduleStatus(SubmoduleStatusType.UNINITIALIZED, path,
          id);


    ObjectId headId;
    try {
      headId = subRepo.resolve(Constants.HEAD);
    } finally {
      subRepo.close();
    }


    // Report uninitialized if no HEAD commit in submodule repository

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    // create some refs via commits and tag
    RevCommit commit = git1.commit().setMessage("initial commit").call();
    Ref tagRef = git1.tag().setName("tag").call();


    try {
      db2.resolve(commit.getId().getName() + "^{commit}");
      fail("id shouldn't exist yet");
    } catch (MissingObjectException e) {
      // we should get here
    }

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    RefSpec spec = new RefSpec("refs/heads/master:refs/heads/x");
    git1.push().setRemote("test").setRefSpecs(spec)
        .call();


    assertEquals(commit.getId(),
        db2.resolve(commit.getId().getName() + "^{commit}"));
    assertEquals(tagRef.getObjectId(),
        db2.resolve(tagRef.getObjectId().getName()));
  }


  @Test

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        .call();


    assertEquals(commit.getId(),
        db2.resolve(commit.getId().getName() + "^{commit}"));
    assertEquals(tagRef.getObjectId(),
        db2.resolve(tagRef.getObjectId().getName()));
  }


  @Test
  public void testTrackingUpdate() throws Exception {
    Repository db2 = createBareRepository();

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    assertFalse(new File(db.getDirectory(), "logs/refs/heads/b").exists());


    // Create new Repository instance, to reread caches and make sure our
    // assumptions are persistent.
    Repository ndb = new FileRepository(db.getDirectory());
    assertEquals(rb2, ndb.resolve("refs/heads/new/name"));
    assertNull(ndb.resolve("refs/heads/b"));
  }


  public void tryRenameWhenLocked(String toLock, String fromName,
      String toName, String headPointsTo) throws IOException {

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