| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.jackrabbit.oak.jcr.version; |
| |
| import org.apache.jackrabbit.JcrConstants; |
| import org.apache.jackrabbit.oak.api.Root; |
| import org.apache.jackrabbit.oak.api.Tree; |
| import org.jetbrains.annotations.NotNull; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * Simple abstraction of the version storage. |
| */ |
| public class VersionStorage { |
| |
| public static final String VERSION_STORAGE_PATH |
| = '/' + JcrConstants.JCR_SYSTEM + '/' + JcrConstants.JCR_VERSIONSTORAGE; |
| |
| private final Root root; |
| |
| public VersionStorage(@NotNull Root versionStorageRoot) { |
| this.root = versionStorageRoot; |
| } |
| |
| Root getRoot() { |
| return root; |
| } |
| |
| /** |
| * The version storage tree. I.e. the tree at path |
| * <code>/jcr:system/jcr:versionStorage</code>, though the returned |
| * tree instance may not necessarily return this path on |
| * {@link Tree#getPath()}! |
| * |
| * @return the version storage tree. |
| */ |
| Tree getTree() { |
| return getVersionStorageTree(root); |
| } |
| |
| /** |
| * Reverts all changes made to the version storage tree. |
| */ |
| void refresh() { |
| root.refresh(); |
| } |
| |
| /** |
| * Returns the version storage tree for the given workspace. |
| * @param workspaceRoot the root of the workspace. |
| * @return the version storage tree. |
| */ |
| private static Tree getVersionStorageTree(@NotNull Root workspaceRoot) { |
| // TODO: this assumes the version store is in the same workspace. |
| return checkNotNull(workspaceRoot).getTree(VERSION_STORAGE_PATH); |
| } |
| |
| } |