DfsRefRename.java

/*
 * 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 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();
        }
    }
}