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.

          }
          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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    }


    final RevCommit commit = parseCommit(branch);
    final RefUpdate u = db.updateRef(Constants.HEAD);
    u.setNewObjectId(commit);
    u.forceUpdate();


    DirCache dc = db.lockDirCache();
    DirCacheCheckout co = new DirCacheCheckout(db, dc, commit.getTree());
    co.checkout();
  }

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    } else
      ref = Constants.R_HEADS + ref;


    RefUpdate u = db.updateRef(ref);
    u.setNewObjectId(obj);
    switch (u.forceUpdate()) {
    case FAST_FORWARD:
    case FORCED:
    case NEW:
    case NO_CHANGE:
      updateServerInfo();

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        ru.setNewObjectId(commitId);


        String refName = Repository.shortenRefName(getRefOrHEAD());
        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()));


        ObjectId origHead = ru.getOldObjectId();
        if (origHead != null)

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      RefUpdate updateRef = repo.updateRef(Constants.R_HEADS + name);
      updateRef.setNewObjectId(startAt);
      updateRef.setRefLogMessage(refLogMessage, false);
      Result updateResult;
      if (exists && force)
        updateResult = updateRef.forceUpdate();
      else
        updateResult = updateRef.update();


      setCallable(false);

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      else if (orphan) {
        updateResult = refUpdate.link(getBranchName());
        ref = repo.getRef(Constants.HEAD);
      } else {
        refUpdate.setNewObjectId(newCommit);
        updateResult = refUpdate.forceUpdate();
      }


      setCallable(false);


      boolean ok = false;

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      JGitInternalException, GitAPIException {
    Git git = new Git(db);
    git.commit().setMessage("initial commit").call();
    RefUpdate r = db.updateRef("refs/heads/side");
    r.setNewObjectId(db.resolve(Constants.HEAD));
    assertEquals(r.forceUpdate(), RefUpdate.Result.NEW);
    RevCommit second = git.commit().setMessage("second commit").setCommitter(committer).call();
    db.updateRef(Constants.HEAD).link("refs/heads/side");
    RevCommit firstSide = git.commit().setMessage("first side commit").setAuthor(author).call();


    write(new File(db.getDirectory(), Constants.MERGE_HEAD), ObjectId

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            co.setFailOnConflict(true);
            co.checkout();
            RefUpdate refUpdate = submoduleRepo.updateRef(
                Constants.HEAD, true);
            refUpdate.setNewObjectId(commit);
            refUpdate.forceUpdate();
          }
        } finally {
          submoduleRepo.close();
        }
        updated.add(generator.getPath());

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    RefUpdate lockRef = db.updateRef("HEAD");
    ObjectId newId = ObjectId
        .fromString("07f822839a2fe9760f386cbbbcb3f92c5fe81def");
    lockRef.setNewObjectId(newId);
    assertEquals(RefUpdate.Result.FORCED, lockRef.forceUpdate());


    assertTrue(new File(db.getDirectory(), "refs/heads/foobar").exists());
    assertEquals(newId, db.resolve("refs/heads/foobar"));


    // Again. The ref already exists

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    // Again. The ref already exists
    RefUpdate lockRef2 = db.updateRef("HEAD");
    ObjectId newId2 = ObjectId
        .fromString("7f822839a2fe9760f386cbbbcb3f92c5fe81def7");
    lockRef2.setNewObjectId(newId2);
    assertEquals(RefUpdate.Result.FORCED, lockRef2.forceUpdate());


    assertTrue(new File(db.getDirectory(), "refs/heads/foobar").exists());
    assertEquals(newId2, db.resolve("refs/heads/foobar"));
  }

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