Examples of org.eclipse.jgit.revwalk.RevWalk

org.eclipse.jgit.revwalk.RevWalk
Walks a commit graph and produces the matching commits in order.
A RevWalk instance can only be used once to generate results. Running a second time requires creating a new RevWalk instance, or invoking {@link #reset()} before starting again. Resetting an existing instance may befaster for some applications as commit body parsing can be avoided on the later invocations.
RevWalk instances are not thread-safe. Applications must either restrict usage of a RevWalk instance to a single thread, or implement their own synchronization at a higher level.
Multiple simultaneous RevWalk instances per {@link Repository} are permitted,even from concurrent threads. Equality of {@link RevCommit}s from two different RevWalk instances is never true, even if their {@link ObjectId}s are equal (and thus they describe the same commit).
The offered iterator is over the list of RevCommits described by the configuration of this instance. Applications should restrict themselves to using either the provided Iterator or {@link #next()}, but never use both on the same RevWalk at the same time. The Iterator may buffer RevCommits, while {@link #next()} does not.

   * @return the result status of the update.
   * @throws IOException
   *             an unexpected IO error occurred while writing changes.
   */
  public Result update() throws IOException {
    RevWalk rw = new RevWalk(getRepository());
    try {
      return update(rw);
    } finally {
      rw.release();
    }
  }

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   *
   * @return the result status of the delete.
   * @throws IOException
   */
  public Result delete() throws IOException {
    RevWalk rw = new RevWalk(getRepository());
    try {
      return delete(rw);
    } finally {
      rw.release();
    }
  }

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    TreeWalk treeWalk = new TreeWalk(repo);
    int dcIdx = treeWalk.addTree(new DirCacheIterator(index));
    int fIdx = treeWalk.addTree(new FileTreeIterator(repo));
    int hIdx = -1;
    if (headId != null)
      hIdx = treeWalk.addTree(new RevWalk(repo).parseTree(headId));
    treeWalk.setRecursive(true);


    while (treeWalk.next()) {
      String path = treeWalk.getPathString();
      // check if current entry's path matches a specified path

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  /**
   * @param repo
   */
  protected LogCommand(Repository repo) {
    super(repo);
    walk = new RevWalk(repo);
  }

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   * @throws JGitInternalException
   *             upon internal failure
   */
  public Note call() throws JGitInternalException {
    checkCallable();
    RevWalk walk = new RevWalk(repo);
    ObjectInserter inserter = repo.newObjectInserter();
    NoteMap map = NoteMap.newEmptyMap();
    RevCommit notesCommit = null;
    try {
      Ref ref = repo.getRef(notesRef);
      // if we have a notes ref, use it
      if (ref != null) {
        notesCommit = walk.parseCommit(ref.getObjectId());
        map = NoteMap.read(walk.getObjectReader(), notesCommit);
      }
      map.set(id, message, inserter);
      commitNoteMap(walk, map, notesCommit, inserter,
          "Notes added by 'git notes add'");
      return map.getNote(id);
    } catch (IOException e) {
      throw new JGitInternalException(e.getMessage(), e);
    } finally {
      inserter.release();
      walk.release();
    }
  }

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  public IndexDiff(Repository repository, String revstr,
      WorkingTreeIterator workingTreeIterator) throws IOException {
    this.repository = repository;
    ObjectId objectId = repository.resolve(revstr);
    if (objectId != null)
      tree = new RevWalk(repository).parseTree(objectId);
    else
      tree = null;
    this.initialWorkingTreeIterator = workingTreeIterator;
  }

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   */
  public IndexDiff(Repository repository, ObjectId objectId,
      WorkingTreeIterator workingTreeIterator) throws IOException {
    this.repository = repository;
    if (objectId != null)
      tree = new RevWalk(repository).parseTree(objectId);
    else
      tree = null;
    this.initialWorkingTreeIterator = workingTreeIterator;
  }

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   * @throws IOException
   *             on serious errors
   */
  public ObjectId resolve(final String revstr)
      throws AmbiguousObjectException, IOException {
    RevWalk rw = new RevWalk(this);
    try {
      return resolve(rw, revstr);
    } finally {
      rw.release();
    }
  }

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    return recreate(ref, newLeaf);
  }


  private ObjectIdRef doPeel(final Ref leaf) throws MissingObjectException,
      IOException {
    RevWalk rw = new RevWalk(getRepository());
    try {
      RevObject obj = rw.parseAny(leaf.getObjectId());
      if (obj instanceof RevTag) {
        return new ObjectIdRef.PeeledTag(leaf.getStorage(), leaf
            .getName(), leaf.getObjectId(), rw.peel(obj).copy());
      } else {
        return new ObjectIdRef.PeeledNonTag(leaf.getStorage(), leaf
            .getName(), leaf.getObjectId());
      }
    } finally {
      rw.release();
    }
  }

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  /**
   * @param repo
   */
  protected RebaseCommand(Repository repo) {
    super(repo);
    walk = new RevWalk(repo);
    rebaseDir = new File(repo.getDirectory(), REBASE_MERGE);
  }

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