/*
    * Copyright (C) 2011, Google Inc. and others
    *
    * This program and the accompanying materials are made available under the
    * terms of the Eclipse Distribution License v. 1.0 which is available at
    * https://www.eclipse.org/org/documents/edl-v10.php.
    *
    * SPDX-License-Identifier: BSD-3-Clause
    */
  
  package org.eclipse.jgit.internal.storage.dfs;
  
  import java.io.IOException;
  
  import org.eclipse.jgit.lib.ObjectId;
  import org.eclipse.jgit.lib.RefRename;
  import org.eclipse.jgit.lib.RefUpdate;
  import org.eclipse.jgit.lib.RefUpdate.Result;
  
  final class DfsRefRename extends RefRename {
  	DfsRefRename(RefUpdate="../../../../../../org/eclipse/jgit/lib/RefUpdate.html#RefUpdate">RefUpdate src, RefUpdate dst) {
  		super(src, dst);
  	}
  
  	/** {@inheritDoc} */
  	@Override
  	protected Result doRename() throws IOException {
  		// TODO Correctly handle renaming foo/bar to foo.
  		// TODO Batch these together into one log update.
  
  		destination.setExpectedOldObjectId(ObjectId.zeroId());
  		destination.setNewObjectId(source.getRef().getObjectId());
  		switch (destination.update()) {
  		case NEW:
  			source.delete();
  			return Result.RENAMED;
  
  		default:
  			return destination.getResult();
  		}
  	}
  }