| /* |
| * 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.openmeetings.backup; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.function.Consumer; |
| import java.util.function.Predicate; |
| |
| import org.apache.openmeetings.db.entity.file.BaseFileItem; |
| |
| class FileTree<T extends BaseFileItem> { |
| private final T item; |
| private final Map<Long, FileTree<T>> children = new HashMap<>(); |
| |
| FileTree() { |
| this(null); |
| } |
| |
| FileTree(T item) { |
| this.item = item; |
| } |
| |
| boolean add(T child) { |
| if (child.getParentId() != null && child.getParentId() < 1) { |
| child.setParentId(null); |
| } |
| if ((item == null && child.getParentId() == null) || (item != null && item.getId().equals(child.getParentId()))) { |
| children.put(child.getId(), new FileTree<>(child)); |
| return true; |
| } |
| for (Entry<Long, FileTree<T>> e : children.entrySet()) { |
| if (e.getValue().add(child)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void process(Predicate<T> invalid, Consumer<T> consumer) { |
| if (item != null) { |
| if (invalid.test(item)) { |
| return; // we will not process invalid and i's children |
| } |
| consumer.accept(item); |
| } |
| if (!children.isEmpty()) { |
| children.forEach((id, e) -> e.process(invalid, consumer)); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| String val = "FileTree[type ='" + (item == null ? "root" : item.getType()) + "'"; |
| if (item != null) { |
| val += ", name='" + item.getName() + "'"; |
| } |
| if (!children.isEmpty()) { |
| val += ", children='" + children + "'"; |
| } |
| return val + "]"; |
| } |
| } |