| /* |
| * 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.spi.commit; |
| |
| import org.apache.jackrabbit.oak.api.CommitFailedException; |
| import org.apache.jackrabbit.oak.spi.state.NodeState; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * Extension point for validating and modifying content changes. Available |
| * commit hooks are called in sequence to process incoming content changes |
| * before they get persisted and shared with other clients. |
| * <p> |
| * A commit hook can throw a {@link CommitFailedException} for a particular |
| * change to prevent it from being persisted, or it can modify the changes |
| * for example to update an in-content index or to add auto-generated content. |
| * <p> |
| * Note that instead of implementing this interface directly, most commit |
| * editors and validators are better expressed as implementations of the |
| * more specific extension interfaces defined in this package. |
| * |
| * @see <a href="http://jackrabbit.apache.org/oak/docs/nodestate.html#The_commit_hook_mechanism" |
| * >The commit hook mechanism</a> |
| */ |
| public interface CommitHook { |
| |
| /** |
| * Validates and/or modifies the given content change before it gets |
| * persisted. |
| * |
| * @param before content tree before the commit |
| * @param after content tree prepared for the commit |
| * @param info metadata associated with this commit |
| * @return content tree to be committed |
| * @throws CommitFailedException if the commit should be rejected |
| */ |
| @NotNull |
| NodeState processCommit(NodeState before, NodeState after, CommitInfo info) |
| throws CommitFailedException; |
| |
| } |