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

    Repository repository = FileRepositoryBuilder.create(new File(
        destinationRepo, Constants.DOT_GIT));
    // we always have an origin/master
    assertNotNull(repository.resolve("origin/master"));
    // and a local master initialized from origin/master (default!)
    assertEquals(repository.resolve("master"), repository
        .resolve("origin/master"));
    // A well known tag
    assertNotNull(repository.resolve(
        Constants.R_TAGS + SampleTestRepository.v1_0_name).name());
    // lots of refs

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    assertNotNull(repository.resolve("origin/master"));
    // and a local master initialized from origin/master (default!)
    assertEquals(repository.resolve("master"), repository
        .resolve("origin/master"));
    // A well known tag
    assertNotNull(repository.resolve(
        Constants.R_TAGS + SampleTestRepository.v1_0_name).name());
    // lots of refs
    int refs = repository.getAllRefs().size();
    assertTrue(refs >= 4);
    // and a known file in the working dir

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        if (rev != null) {
          if (compareMode)
            try {
              ITypedElement left = CompareUtils
                  .getFileRevisionTypedElement(gitPath,
                      new RevWalk(repo).parseCommit(repo
                          .resolve(Constants.HEAD)),
                      repo);
              ITypedElement right = CompareUtils
                  .getFileRevisionTypedElement(commitPath,
                      commit, repo);

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      }
      final Repository repository = mapping.getRepository();
      String baseline = GitQuickDiffProvider.baseline.get(repository);
      if (baseline == null)
        baseline = Constants.HEAD;
      ObjectId commitId = repository.resolve(baseline);
      if (commitId != null) {
        if (commitId.equals(lastCommit)) {
          if (GitTraceLocation.QUICKDIFF.isActive())
            GitTraceLocation.getTrace().trace(
                GitTraceLocation.QUICKDIFF.getLocation(),

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    Collection<Ref> revTags = repo.getTags().values();
    List<RevTag> tags = new ArrayList<RevTag>();
    RevWalk walk = new RevWalk(repo);
    for (Ref ref : revTags) {
      try {
        tags.add(walk.parseTag(repo.resolve(ref.getName())));
      } catch (IOException e) {
        throw new ExecutionException(e.getMessage(), e);
      }
    }
    return tags;

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      File file = (File) input;
      // TODO can we create a ITypedElement from the local file?
      Repository repo = getRepository(event);
      RevCommit leftCommit;
      try {
        leftCommit = new RevWalk(repo).parseCommit(repo
            .resolve(Constants.HEAD));
      } catch (Exception e) {
        throw new ExecutionException(e.getMessage(), e);
      }
      final String leftCommitPath = getRepoRelativePath(repo, file);

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        // remove the tag again
        git.tagDelete().setTags("tag_for_testing").call();


        // read some other commit and set the tag on it
        ObjectId id = repository.resolve("HEAD^");
        RevWalk walk = new RevWalk(repository);
        RevCommit commit = walk.parseCommit(id);
        tag = git.tag().setObjectId(commit).setName("tag_for_testing").call();
        System.out.println("Created/moved tag " + tag + " to repository at " + repository.getDirectory());

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public class BrowseTree {


    public static void main(String[] args) throws IOException, GitAPIException {
        Repository repository = CookbookHelper.openJGitCookbookRepository();


        ObjectId revId = repository.resolve(Constants.HEAD);
        TreeWalk treeWalk = new TreeWalk(repository);


        treeWalk.addTree(new RevWalk(repository).parseTree(revId));


        while (treeWalk.next())

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    public static void main(String[] args) throws IOException, GitAPIException {
        Repository repository = CookbookHelper.openJGitCookbookRepository();


        PlotWalk revWalk = new PlotWalk(repository);
        ObjectId rootId = repository.resolve("refs/heads/master");
        RevCommit root = revWalk.parseCommit(rootId);
        revWalk.markStart(root);
        PlotCommitList<PlotLane> plotCommitList = new PlotCommitList<PlotLane>();
        plotCommitList.source(revWalk);
        plotCommitList.fillTo(Integer.MAX_VALUE);

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            // this is the file that we write the archive to
            OutputStream out = new FileOutputStream(file);
            try {
                // finally call the ArchiveCommand to write out using the given format
                new Git(repository).archive()
                        .setTree(repository.resolve("master"))
                        .setFormat("myzip")
                        .setOutputStream(out)
                        .call();
            } finally {
                out.close();

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