Examples of org.eclipse.jgit.revwalk.ObjectWalk$TreeVisit

org.eclipse.jgit.revwalk.ObjectWalk
Specialized subclass of RevWalk to include trees, blobs and tags.
Unlike RevWalk this subclass is able to remember starting roots that include annotated tags, or arbitrary trees or blobs. Once commit generation is complete and all commits have been popped by the application, individual annotated tag, tree and blob objects can be popped through the additional method {@link #nextObject()}.
Tree and blob objects reachable from interesting commits are automatically scheduled for inclusion in the results of {@link #nextObject()}, returning each object exactly once. Objects are sorted and returned according to the the commits that reference them and the order they appear within a tree. Ordering can be affected by changing the {@link RevSort} used to order thecommits that are returned first.

      baseObjects = parser.getBaseObjectIds();
      providedObjects = parser.getNewObjectIds();
    }
    parser = null;


    final ObjectWalk ow = new ObjectWalk(db);
    ow.setRetainBody(false);
    if (checkReferencedIsReachable) {
      ow.sort(RevSort.TOPO);
      if (!baseObjects.isEmpty())
        ow.sort(RevSort.BOUNDARY, true);
    }


    for (final ReceiveCommand cmd : commands) {
      if (cmd.getResult() != Result.NOT_ATTEMPTED)
        continue;
      if (cmd.getType() == ReceiveCommand.Type.DELETE)
        continue;
      ow.markStart(ow.parseAny(cmd.getNewId()));
    }
    for (final ObjectId have : advertisedHaves) {
      RevObject o = ow.parseAny(have);
      ow.markUninteresting(o);


      if (checkReferencedIsReachable && !baseObjects.isEmpty()) {
        o = ow.peel(o);
        if (o instanceof RevCommit)
          o = ((RevCommit) o).getTree();
        if (o instanceof RevTree)
          ow.markUninteresting(o);
      }
    }


    RevCommit c;
    while ((c = ow.next()) != null) {
      if (checkReferencedIsReachable //
          && !c.has(RevFlag.UNINTERESTING) //
          && !providedObjects.contains(c))
        throw new MissingObjectException(c, Constants.TYPE_COMMIT);
    }


    RevObject o;
    while ((o = ow.nextObject()) != null) {
      if (o.has(RevFlag.UNINTERESTING))
        continue;


      if (checkReferencedIsReachable) {
        if (providedObjects.contains(o))
          continue;
        else
          throw new MissingObjectException(o, o.getType());
      }


      if (o instanceof RevBlob && !db.hasObject(o))
        throw new MissingObjectException(o, Constants.TYPE_BLOB);
    }


    if (checkReferencedIsReachable) {
      for (ObjectId id : baseObjects) {
        o = ow.parseAny(id);
        if (!o.has(RevFlag.UNINTERESTING))
          throw new MissingObjectException(o, o.getType());
      }
    }
  }

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      if (wantAll.isEmpty()) {
        pw.preparePack(pm, wantIds, commonBase);
      } else {
        walk.reset();


        ObjectWalk ow = walk.toObjectWalkWithSameObjects();
        pw.preparePack(pm, ow, wantAll, commonBase);
        rw = ow;
      }


      if (options.contains(OPTION_INCLUDE_TAG) && refs != null) {

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    }
  }


  private boolean askForIsComplete() throws TransportException {
    try {
      final ObjectWalk ow = new ObjectWalk(transport.local);
      try {
        for (final ObjectId want : askFor.keySet())
          ow.markStart(ow.parseAny(want));
        for (final Ref ref : transport.local.getAllRefs().values())
          ow.markUninteresting(ow.parseAny(ref.getObjectId()));
        ow.checkConnectivity();
      } finally {
        ow.release();
      }
      return true;
    } catch (MissingObjectException e) {
      return false;
    } catch (IOException e) {

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   *             when some I/O problem occur during reading objects.
   */
  public void preparePack(ProgressMonitor countingMonitor,
      Set<? extends ObjectId> want,
      Set<? extends ObjectId> have) throws IOException {
    ObjectWalk ow;
    if (shallowPack)
      ow = new DepthWalk.ObjectWalk(reader, depth);
    else
      ow = new ObjectWalk(reader);
    preparePack(countingMonitor, ow, want, have);
  }

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      baseObjects = parser.getBaseObjectIds();
      providedObjects = parser.getNewObjectIds();
    }
    parser = null;


    final ObjectWalk ow = new ObjectWalk(db);
    ow.setRetainBody(false);
    if (checkReferencedIsReachable) {
      ow.sort(RevSort.TOPO);
      if (!baseObjects.isEmpty())
        ow.sort(RevSort.BOUNDARY, true);
    }


    for (final ReceiveCommand cmd : commands) {
      if (cmd.getResult() != Result.NOT_ATTEMPTED)
        continue;
      if (cmd.getType() == ReceiveCommand.Type.DELETE)
        continue;
      ow.markStart(ow.parseAny(cmd.getNewId()));
    }
    for (final ObjectId have : advertisedHaves) {
      RevObject o = ow.parseAny(have);
      ow.markUninteresting(o);


      if (checkReferencedIsReachable && !baseObjects.isEmpty()) {
        o = ow.peel(o);
        if (o instanceof RevCommit)
          o = ((RevCommit) o).getTree();
        if (o instanceof RevTree)
          ow.markUninteresting(o);
      }
    }


    RevCommit c;
    while ((c = ow.next()) != null) {
      if (checkReferencedIsReachable //
          && !c.has(RevFlag.UNINTERESTING) //
          && !providedObjects.contains(c))
        throw new MissingObjectException(c, Constants.TYPE_COMMIT);
    }


    RevObject o;
    while ((o = ow.nextObject()) != null) {
      if (o.has(RevFlag.UNINTERESTING))
        continue;


      if (checkReferencedIsReachable) {
        if (providedObjects.contains(o))
          continue;
        else
          throw new MissingObjectException(o, o.getType());
      }


      if (o instanceof RevBlob && !db.hasObject(o))
        throw new MissingObjectException(o, Constants.TYPE_BLOB);
    }


    if (checkReferencedIsReachable) {
      for (ObjectId id : baseObjects) {
        o = ow.parseAny(id);
        if (!o.has(RevFlag.UNINTERESTING))
          throw new MissingObjectException(o, o.getType());
      }
    }
  }

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   *             when some I/O problem occur during reading objects.
   */
  public void preparePack(ProgressMonitor countingMonitor,
      final Collection<? extends ObjectId> want,
      final Collection<? extends ObjectId> have) throws IOException {
    ObjectWalk ow = new ObjectWalk(reader);
    preparePack(countingMonitor, ow, want, have);
  }

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    }
  }


  private boolean askForIsComplete() throws TransportException {
    try {
      final ObjectWalk ow = new ObjectWalk(transport.local);
      try {
        for (final ObjectId want : askFor.keySet())
          ow.markStart(ow.parseAny(want));
        for (final Ref ref : transport.local.getAllRefs().values())
          ow.markUninteresting(ow.parseAny(ref.getObjectId()));
        ow.checkConnectivity();
      } finally {
        ow.release();
      }
      return true;
    } catch (MissingObjectException e) {
      return false;
    } catch (IOException e) {

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      if (wantAll.isEmpty()) {
        pw.preparePack(pm, wantIds, commonBase);
      } else {
        walk.reset();


        ObjectWalk ow = walk.toObjectWalkWithSameObjects();
        pw.preparePack(pm, ow, wantAll, commonBase);
        rw = ow;
      }


      if (options.contains(OPTION_INCLUDE_TAG)) {

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      // There are new/modified refs! Check which loose objects are now
      // referenced by these modified refs (or their reflogentries).
      // Remove these loose objects
      // from the deletionCandidates. When the last candidate is removed
      // leave this method.
      ObjectWalk w = new ObjectWalk(repo);
      try {
        for (Ref cr : newRefs.values())
          w.markStart(w.parseAny(cr.getObjectId()));
        if (lastPackedRefs != null)
          for (Ref lpr : lastPackedRefs.values())
            w.markUninteresting(w.parseAny(lpr.getObjectId()));
        removeReferenced(deletionCandidates, w);
      } finally {
        w.dispose();
      }
    }


    if (deletionCandidates.isEmpty())
      return;


    // Since we have not left the method yet there are still
    // deletionCandidates. Last chance for these objects not to be pruned is
    // that they are referenced by reflog entries. Even refs which currently
    // point to the same object as during last repack() may have
    // additional reflog entries not handled during last repack()
    ObjectWalk w = new ObjectWalk(repo);
    try {
      for (Ref ar : getAllRefs().values())
        for (ObjectId id : listRefLogObjects(ar, lastRepackTime))
          w.markStart(w.parseAny(id));
      if (lastPackedRefs != null)
        for (Ref lpr : lastPackedRefs.values())
          w.markUninteresting(w.parseAny(lpr.getObjectId()));
      removeReferenced(deletionCandidates, w);
    } finally {
      w.dispose();
    }


    if (deletionCandidates.isEmpty())
      return;

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  }


  private RevWalk verifyConnected(final Repository repo, final ObjectId revid)
      throws InvalidRevisionException {
    try {
      final ObjectWalk rw = new ObjectWalk(repo);
      try {
        rw.markStart(rw.parseCommit(revid));
      } catch (IncorrectObjectTypeException err) {
        throw new InvalidRevisionException();
      }
      for (final Ref r : repo.getAllRefs().values()) {
        try {
          rw.markUninteresting(rw.parseAny(r.getObjectId()));
        } catch (MissingObjectException err) {
          continue;
        }
      }
      rw.checkConnectivity();
      return rw;
    } catch (IncorrectObjectTypeException err) {
      throw new InvalidRevisionException();
    } catch (MissingObjectException err) {
      throw new InvalidRevisionException();

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