| /* |
| * 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.iotdb.db.metadata.mnode; |
| |
| import org.apache.iotdb.db.conf.IoTDBConstant; |
| import org.apache.iotdb.db.metadata.PartialPath; |
| import org.apache.iotdb.db.rescon.CachedStringPool; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| |
| public abstract class MNode implements IMNode { |
| |
| private static Map<String, String> cachedPathPool = |
| CachedStringPool.getInstance().getCachedPool(); |
| |
| /** Name of the MNode */ |
| protected String name; |
| |
| protected IMNode parent; |
| |
| /** from root to this node, only be set when used once for InternalMNode */ |
| protected String fullPath; |
| |
| /** Constructor of MNode. */ |
| public MNode(IMNode parent, String name) { |
| this.parent = parent; |
| this.name = name; |
| } |
| |
| @Override |
| public String getName() { |
| return name; |
| } |
| |
| @Override |
| public void setName(String name) { |
| this.name = name; |
| } |
| |
| @Override |
| public IMNode getParent() { |
| return parent; |
| } |
| |
| @Override |
| public void setParent(IMNode parent) { |
| this.parent = parent; |
| } |
| |
| /** |
| * get partial path of this node |
| * |
| * @return partial path |
| */ |
| @Override |
| public PartialPath getPartialPath() { |
| List<String> detachedPath = new ArrayList<>(); |
| IMNode temp = this; |
| detachedPath.add(temp.getName()); |
| while (temp.getParent() != null) { |
| temp = temp.getParent(); |
| detachedPath.add(0, temp.getName()); |
| } |
| return new PartialPath(detachedPath.toArray(new String[0])); |
| } |
| |
| /** get full path */ |
| @Override |
| public String getFullPath() { |
| if (fullPath == null) { |
| fullPath = concatFullPath(); |
| String cachedFullPath = cachedPathPool.get(fullPath); |
| if (cachedFullPath == null) { |
| cachedPathPool.put(fullPath, fullPath); |
| } else { |
| fullPath = cachedFullPath; |
| } |
| } |
| return fullPath; |
| } |
| |
| String concatFullPath() { |
| StringBuilder builder = new StringBuilder(name); |
| IMNode curr = this; |
| while (curr.getParent() != null) { |
| curr = curr.getParent(); |
| builder.insert(0, IoTDBConstant.PATH_SEPARATOR).insert(0, curr.getName()); |
| } |
| return builder.toString(); |
| } |
| |
| @Override |
| public void setFullPath(String fullPath) { |
| this.fullPath = fullPath; |
| } |
| |
| @Override |
| public boolean isUseTemplate() { |
| return false; |
| } |
| |
| @Override |
| public boolean isStorageGroup() { |
| return false; |
| } |
| |
| @Override |
| public boolean isEntity() { |
| return false; |
| } |
| |
| @Override |
| public boolean isMeasurement() { |
| return false; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| MNode mNode = (MNode) o; |
| if (fullPath == null) { |
| return Objects.equals(getFullPath(), mNode.getFullPath()); |
| } else { |
| return Objects.equals(fullPath, mNode.fullPath); |
| } |
| } |
| |
| @Override |
| public int hashCode() { |
| if (fullPath == null) { |
| return Objects.hash(getFullPath()); |
| } else { |
| return Objects.hash(fullPath); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return this.getName(); |
| } |
| } |