Examples of org.eclipse.jgit.lib.RefUpdate.forceUpdate()

org.eclipse.jgit.lib.RefUpdate.forceUpdate()
Force the ref to take the new value.
This is just a convenient helper for setting the force flag, and as such the merge test is performed. @return the result status of the update. @throws IOException an unexpected IO error occurred while writing changes.

    final RevCommit commit = parseCommit(repo, head);


    boolean detached = !head.getName().startsWith(Constants.R_HEADS);
    RefUpdate u = repo.updateRef(Constants.HEAD, detached);
    u.setNewObjectId(commit.getId());
    u.forceUpdate();


    if (!bare) {
      DirCache dc = repo.lockDirCache();
      DirCacheCheckout co = new DirCacheCheckout(repo, dc,
          commit.getTree());

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      Result updateResult;
      if (ref != null)
        updateResult = refUpdate.link(ref.getName());
      else {
        refUpdate.setNewObjectId(newCommit);
        updateResult = refUpdate.forceUpdate();
      }


      setCallable(false);


      boolean ok = false;

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      ru.setNewObjectId(commitId);


      String refName = Repository.shortenRefName(ref);
      String message = refName + ": updating " + Constants.HEAD; //$NON-NLS-1$
      ru.setRefLogMessage(message, false);
      if (ru.forceUpdate() == RefUpdate.Result.LOCK_FAILURE)
        throw new JGitInternalException(MessageFormat.format(
            JGitText.get().cannotLock, ru.getName()));


      switch (mode) {
        case HARD:

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    // point the previous head (if any) to the new commit


    if (headName.startsWith(Constants.R_REFS)) {
      RefUpdate rup = repo.updateRef(headName);
      rup.setNewObjectId(newHead);
      Result res = rup.forceUpdate();
      switch (res) {
      case FAST_FORWARD:
      case FORCED:
      case NO_CHANGE:
        break;

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      dco.checkout();
      // update the HEAD
      RefUpdate refUpdate = repo.updateRef(Constants.HEAD, true);
      refUpdate.setExpectedOldObjectId(head);
      refUpdate.setNewObjectId(commit);
      Result res = refUpdate.forceUpdate();
      switch (res) {
      case FAST_FORWARD:
      case NO_CHANGE:
      case FORCED:
        break;

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            }
            if (headId != null)
              ru.setExpectedOldObjectId(headId);
            else
              ru.setExpectedOldObjectId(ObjectId.zeroId());
            Result rc = ru.forceUpdate();
            switch (rc) {
            case NEW:
            case FORCED:
            case FAST_FORWARD: {
              setCallable(false);

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    // point the previous head (if any) to the new commit


    if (headName.startsWith(Constants.R_REFS)) {
      RefUpdate rup = repo.updateRef(headName);
      rup.setNewObjectId(newHead);
      Result res = rup.forceUpdate();
      switch (res) {
      case FAST_FORWARD:
      case FORCED:
      case NO_CHANGE:
        break;

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      dco.checkout();
      // update the HEAD
      RefUpdate refUpdate = repo.updateRef(Constants.HEAD, true);
      refUpdate.setExpectedOldObjectId(head);
      refUpdate.setNewObjectId(commit);
      Result res = refUpdate.forceUpdate();
      switch (res) {
      case FAST_FORWARD:
      case NO_CHANGE:
      case FORCED:
        break;

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      commit.setMessage("test\n");
      ObjectId commitId = oi.insert(commit);


      final RefUpdate ref = repository.updateRef(Constants.HEAD);
      ref.setNewObjectId(commitId);
      switch (ref.forceUpdate()) {
        case NEW:
        case FAST_FORWARD:
        case FORCED:
        case NO_CHANGE:
          break;

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    }


    RefUpdate update = repo.updateRef(refName);
    update.setNewObjectId(treeId);
    update.disableRefLog();
    update.forceUpdate();
    return rw.parseTree(treeId);
  }


  private static ObjectId emptyTree(final Repository repo) throws IOException {
    ObjectInserter oi = repo.newObjectInserter();

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