Examples of org.eclipse.jgit.revwalk.RevWalk.lookupCommit()

org.eclipse.jgit.revwalk.RevWalk.lookupCommit()
Locate a reference to a commit without loading it.
The commit may or may not exist in the repository. It is impossible to tell from this method's return value. @param id name of the commit object. @return reference to the commit object. Never null.

    RevWalk walk = new RevWalk(db);
    try {
      String tagName = toPut.getString(ProtocolConstants.KEY_NAME);
      String commitId = toPut.getString(GitConstants.KEY_TAG_COMMIT);
      ObjectId objectId = db.resolve(commitId);
      RevCommit revCommit = walk.lookupCommit(objectId);


      Ref ref = tag(git, revCommit, tagName);
      URI cloneLocation = BaseToCloneConverter.getCloneLocation(getURI(request), BaseToCloneConverter.TAG_LIST);
      Tag tag = new Tag(cloneLocation, db, ref);
      OrionServlet.writeJSONResponse(request, response, tag.toJSON(), JsonURIUnqualificationStrategy.ALL_NO_GIT);

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      int aheadCount = 0, behindCount = 0;
      if (mergeBaseFilter) {
        RevWalk walk = new RevWalk(db);
        try {
          walk.setRevFilter(RevFilter.MERGE_BASE);
          RevCommit toRevCommit = walk.lookupCommit(toObjectId);
          walk.markStart(toRevCommit);
          RevCommit fromRevCommit = walk.lookupCommit(fromObjectId);
          walk.markUninteresting(fromRevCommit);
          RevCommit next = walk.next();
          walk.reset();

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        RevWalk walk = new RevWalk(db);
        try {
          walk.setRevFilter(RevFilter.MERGE_BASE);
          RevCommit toRevCommit = walk.lookupCommit(toObjectId);
          walk.markStart(toRevCommit);
          RevCommit fromRevCommit = walk.lookupCommit(fromObjectId);
          walk.markUninteresting(fromRevCommit);
          RevCommit next = walk.next();
          walk.reset();
          walk.setRevFilter(RevFilter.ALL);
          aheadCount = RevWalkUtils.count(walk, toRevCommit, next);

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      throws JSONException, URISyntaxException, ServletException {
    Git git = new Git(db);
    RevWalk walk = new RevWalk(db);
    try {
      ObjectId objectId = db.resolve(commitId);
      RevCommit revCommit = walk.lookupCommit(objectId);
      walk.parseBody(revCommit);


      GitTagHandlerV1.tag(git, revCommit, tagName);


      URI cloneLocation = BaseToCloneConverter.getCloneLocation(getURI(request), BaseToCloneConverter.COMMIT_REFRANGE);

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      StringBuilder refLogMessage = new StringBuilder("merge ");


      // Check for FAST_FORWARD, ALREADY_UP_TO_DATE
      RevWalk revWalk = new RevWalk(repo);
      try {
        RevCommit headCommit = revWalk.lookupCommit(head.getObjectId());


        Ref ref = commits.get(0);


        refLogMessage.append(ref.getName());

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        // handle annotated tags
        ObjectId objectId = ref.getPeeledObjectId();
        if (objectId == null)
          objectId = ref.getObjectId();


        RevCommit srcCommit = revWalk.lookupCommit(objectId);
        if (revWalk.isMergedInto(srcCommit, headCommit)) {
          setCallable(false);
          return new MergeResult(headCommit,
              MergeStatus.ALREADY_UP_TO_DATE, mergeStrategy);
        } else if (revWalk.isMergedInto(headCommit, srcCommit)) {

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      // handle annotated tags
      ObjectId objectId = ref.getPeeledObjectId();
      if (objectId == null)
        objectId = ref.getObjectId();


      RevCommit srcCommit = revWalk.lookupCommit(objectId);


      ObjectId headId = head.getObjectId();
      if (headId == null) {
        revWalk.parseHeaders(srcCommit);
        dco = new DirCacheCheckout(repo,

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        return new MergeResult(srcCommit, srcCommit, new ObjectId[] {
            null, srcCommit }, MergeStatus.FAST_FORWARD,
            mergeStrategy, null, null);
      }


      RevCommit headCommit = revWalk.lookupCommit(headId);


      if (revWalk.isMergedInto(srcCommit, headCommit)) {
        setCallable(false);
        return new MergeResult(headCommit, srcCommit, new ObjectId[] {
            headCommit, srcCommit },

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    RevWalk rw = new RevWalk(repo);
    try {
      rw.setRetainBody(false);
      rw.setRevFilter(RevFilter.MERGE_BASE);


      RevCommit srcRev = rw.lookupCommit(commit1);
      RevCommit dstRev = rw.lookupCommit(commit2);


      rw.markStart(dstRev);
      rw.markStart(srcRev);

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    try {
      rw.setRetainBody(false);
      rw.setRevFilter(RevFilter.MERGE_BASE);


      RevCommit srcRev = rw.lookupCommit(commit1);
      RevCommit dstRev = rw.lookupCommit(commit2);


      rw.markStart(dstRev);
      rw.markStart(srcRev);


      RevCommit result = rw.next();

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