| /* |
| * Copyright (C) 2016, Google Inc. |
| * and other copyright owners as documented in the project's IP log. |
| * |
| * This program and the accompanying materials are made available |
| * under the terms of the Eclipse Distribution License v1.0 which |
| * accompanies this distribution, is reproduced below, and is |
| * available at http://www.eclipse.org/org/documents/edl-v10.php |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * - Neither the name of the Eclipse Foundation, Inc. nor the |
| * names of its contributors may be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.eclipse.jgit.internal.storage.reftree; |
| |
| import static org.eclipse.jgit.lib.Constants.HEAD; |
| import static org.eclipse.jgit.lib.RefUpdate.Result.REJECTED; |
| import static org.eclipse.jgit.lib.RefUpdate.Result.RENAMED; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.ObjectIdRef; |
| import org.eclipse.jgit.lib.Ref; |
| import org.eclipse.jgit.lib.RefRename; |
| import org.eclipse.jgit.lib.RefUpdate; |
| import org.eclipse.jgit.lib.RefUpdate.Result; |
| import org.eclipse.jgit.lib.SymbolicRef; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| |
| /** Single reference rename to {@link RefTreeDatabase}. */ |
| class RefTreeRename extends RefRename { |
| private final RefTreeDatabase refdb; |
| |
| RefTreeRename(RefTreeDatabase refdb, RefUpdate src, RefUpdate dst) { |
| super(src, dst); |
| this.refdb = refdb; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| protected Result doRename() throws IOException { |
| try (RevWalk rw = new RevWalk(refdb.getRepository())) { |
| RefTreeBatch batch = new RefTreeBatch(refdb); |
| batch.setRefLogIdent(getRefLogIdent()); |
| batch.setRefLogMessage(getRefLogMessage(), false); |
| batch.init(rw); |
| |
| Ref head = batch.exactRef(rw.getObjectReader(), HEAD); |
| Ref oldRef = batch.exactRef(rw.getObjectReader(), source.getName()); |
| if (oldRef == null) { |
| return REJECTED; |
| } |
| |
| Ref newRef = asNew(oldRef); |
| List<Command> mv = new ArrayList<>(3); |
| mv.add(new Command(oldRef, null)); |
| mv.add(new Command(null, newRef)); |
| if (head != null && head.isSymbolic() |
| && head.getTarget().getName().equals(oldRef.getName())) { |
| mv.add(new Command( |
| head, |
| new SymbolicRef(head.getName(), newRef))); |
| } |
| batch.execute(rw, mv); |
| return RefTreeUpdate.translate(mv.get(1).getResult(), RENAMED); |
| } |
| } |
| |
| private Ref asNew(Ref src) { |
| String name = destination.getName(); |
| if (src.isSymbolic()) { |
| return new SymbolicRef(name, src.getTarget()); |
| } |
| |
| ObjectId peeled = src.getPeeledObjectId(); |
| if (peeled != null) { |
| return new ObjectIdRef.PeeledTag( |
| src.getStorage(), |
| name, |
| src.getObjectId(), |
| peeled); |
| } |
| |
| return new ObjectIdRef.PeeledNonTag( |
| src.getStorage(), |
| name, |
| src.getObjectId()); |
| } |
| } |