| /* |
| * 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.plugins.observation.filter; |
| |
| import static org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.MISSING_NODE; |
| |
| import org.apache.jackrabbit.oak.api.PropertyState; |
| import org.apache.jackrabbit.oak.spi.state.NodeState; |
| |
| /** |
| * This {@code EventFilter} implementation excludes events for child nodes |
| * of added nodes. |
| */ |
| public class AddSubtreeFilter implements EventFilter { |
| private static final AddSubtreeFilter INCLUDE_ADD = new AddSubtreeFilter(true); |
| private static final AddSubtreeFilter EXCLUDE_ADD = new AddSubtreeFilter(false); |
| |
| private final boolean include; |
| |
| public static EventFilter getInstance() { |
| return INCLUDE_ADD; |
| } |
| |
| private AddSubtreeFilter(boolean include) { |
| this.include = include; |
| } |
| |
| @Override |
| public boolean includeAdd(PropertyState after) { |
| return true; |
| } |
| |
| @Override |
| public boolean includeChange(PropertyState before, PropertyState after) { |
| return true; |
| } |
| |
| @Override |
| public boolean includeDelete(PropertyState before) { |
| return true; |
| } |
| |
| @Override |
| public boolean includeAdd(String name, NodeState after) { |
| return include; |
| } |
| |
| @Override |
| public boolean includeDelete(String name, NodeState before) { |
| return true; |
| } |
| |
| @Override |
| public boolean includeMove(String sourcePath, String name, NodeState moved) { |
| return true; |
| } |
| |
| @Override |
| public boolean includeReorder(String destName, String name, NodeState reordered) { |
| return true; |
| } |
| |
| @Override |
| public EventFilter create(String name, NodeState before, NodeState after) { |
| if (this == EXCLUDE_ADD) { |
| return null; |
| } else if (before == MISSING_NODE) { |
| return EXCLUDE_ADD; |
| } else { |
| return INCLUDE_ADD; |
| } |
| } |
| } |