/**
   * Execute the SubmoduleUpdateCommand command.
   *
   * @return a collection of updated submodule paths
   * @throws ConcurrentRefUpdateException
   * @throws CheckoutConflictException
   * @throws InvalidMergeHeadsException
   * @throws InvalidConfigurationException
   * @throws NoHeadException
   * @throws NoMessageException
   * @throws RefNotFoundException
   * @throws WrongRepositoryStateException
   * @throws GitAPIException
   */
  public Collection<String> call()
      throws InvalidConfigurationException, NoHeadException, ConcurrentRefUpdateException,
          CheckoutConflictException, InvalidMergeHeadsException, WrongRepositoryStateException,
          NoMessageException, NoHeadException, RefNotFoundException, GitAPIException {
    checkCallable();

    try {
      SubmoduleWalk generator = SubmoduleWalk.forIndex(repo);
      if (!paths.isEmpty()) generator.setFilter(PathFilterGroup.createFromStrings(paths));
      List<String> updated = new ArrayList<String>();
      while (generator.next()) {
        // Skip submodules not registered in .gitmodules file
        if (generator.getModulesPath() == null) continue;
        // Skip submodules not registered in parent repository's config
        String url = generator.getConfigUrl();
        if (url == null) continue;

        Repository submoduleRepo = generator.getRepository();
        // Clone repository is not present
        if (submoduleRepo == null) {
          CloneCommand clone = Git.cloneRepository();
          configure(clone);
          clone.setURI(url);
          clone.setDirectory(generator.getDirectory());
          clone.setGitDir(
              new File(new File(repo.getDirectory(), Constants.MODULES), generator.getPath()));
          if (monitor != null) clone.setProgressMonitor(monitor);
          submoduleRepo = clone.call().getRepository();
        }

        try {
          RevWalk walk = new RevWalk(submoduleRepo);
          RevCommit commit = walk.parseCommit(generator.getObjectId());

          String update = generator.getConfigUpdate();
          if (ConfigConstants.CONFIG_KEY_MERGE.equals(update)) {
            MergeCommand merge = new MergeCommand(submoduleRepo);
            merge.include(commit);
            merge.setStrategy(strategy);
            merge.call();
          } else if (ConfigConstants.CONFIG_KEY_REBASE.equals(update)) {
            RebaseCommand rebase = new RebaseCommand(submoduleRepo);
            rebase.setUpstream(commit);
            rebase.setStrategy(strategy);
            rebase.call();
          } else {
            // Checkout commit referenced in parent repository's
            // index as a detached HEAD
            DirCacheCheckout co =
                new DirCacheCheckout(submoduleRepo, submoduleRepo.lockDirCache(), commit.getTree());
            co.setFailOnConflict(true);
            co.checkout();
            RefUpdate refUpdate = submoduleRepo.updateRef(Constants.HEAD, true);
            refUpdate.setNewObjectId(commit);
            refUpdate.forceUpdate();
          }
        } finally {
          submoduleRepo.close();
        }
        updated.add(generator.getPath());
      }
      return updated;
    } catch (IOException e) {
      throw new JGitInternalException(e.getMessage(), e);
    } catch (ConfigInvalidException e) {
      throw new InvalidConfigurationException(e.getMessage(), e);
    }
  }
Beispiel #2
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  public static CherryPickResult cherryPickNoMerge(final Git git, Ref src)
      throws GitAPIException, CantMergeCommitWithZeroParentsException {
    // Does the same as the original git-cherryPick
    // except commiting after running merger
    Repository repo = git.getRepository();

    RevCommit newHead = null;
    List<Ref> cherryPickedRefs = new LinkedList<Ref>();

    RevWalk revWalk = new RevWalk(repo);
    try {
      // get the head commit
      Ref headRef = repo.getRef(Constants.HEAD);
      if (headRef == null)
        throw new NoHeadException(JGitText.get().commitOnRepoWithoutHEADCurrentlyNotSupported);
      RevCommit headCommit = revWalk.parseCommit(headRef.getObjectId());

      newHead = headCommit;

      // get the commit to be cherry-picked
      // handle annotated tags
      ObjectId srcObjectId = src.getPeeledObjectId();
      if (srcObjectId == null) srcObjectId = src.getObjectId();
      RevCommit srcCommit = revWalk.parseCommit(srcObjectId);

      // get the parent of the commit to cherry-pick
      if (srcCommit.getParentCount() == 0)
        throw new CantMergeCommitWithZeroParentsException(
            "Commit with zero parents cannot be merged");

      if (srcCommit.getParentCount() > 1)
        throw new MultipleParentsNotAllowedException(
            MessageFormat.format(
                JGitText.get().canOnlyCherryPickCommitsWithOneParent,
                srcCommit.name(),
                Integer.valueOf(srcCommit.getParentCount())));

      RevCommit srcParent = srcCommit.getParent(0);
      revWalk.parseHeaders(srcParent);

      ResolveMerger merger = (ResolveMerger) MergeStrategy.RESOLVE.newMerger(repo);
      merger.setWorkingTreeIterator(new FileTreeIterator(repo));
      merger.setBase(srcParent.getTree());
      if (merger.merge(headCommit, srcCommit)) {
        DirCacheCheckout dco =
            new DirCacheCheckout(
                repo, headCommit.getTree(), repo.lockDirCache(), merger.getResultTreeId());
        dco.setFailOnConflict(true);
        dco.checkout();

        cherryPickedRefs.add(src);
      } else {
        if (merger.failed()) return new CherryPickResult(merger.getFailingPaths());

        // there are merge conflicts
        String message =
            new MergeMessageFormatter()
                .formatWithConflicts(srcCommit.getFullMessage(), merger.getUnmergedPaths());

        repo.writeCherryPickHead(srcCommit.getId());
        repo.writeMergeCommitMsg(message);

        return CherryPickResult.CONFLICT;
      }
    } catch (IOException e) {
      throw new JGitInternalException(
          MessageFormat.format(JGitText.get().exceptionCaughtDuringExecutionOfCherryPickCommand, e),
          e);
    } finally {
      revWalk.release();
    }

    return new CherryPickResult(newHead, cherryPickedRefs);
  }