samperson1997 commented on a change in pull request #793: [IOTDB-274] Refactor MManager URL: https://github.com/apache/incubator-iotdb/pull/793#discussion_r381044690
########## File path: server/src/main/java/org/apache/iotdb/db/metadata/mnode/MNode.java ########## @@ -0,0 +1,184 @@ +/* + * 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 java.io.Serializable; +import java.util.HashMap; +import java.util.Map; +import org.apache.iotdb.db.conf.IoTDBConstant; +import org.apache.iotdb.tsfile.write.schema.MeasurementSchema; + +/** + * This class is the implementation of Metadata Node. One MNode instance represents one node in the + * Metadata Tree + */ +public abstract class MNode implements Serializable { + + private static final long serialVersionUID = -770028375899514063L; + + /** + * Name of the MNode + */ + private String name; + + /** + * Map for the schema in this storage group + */ + private Map<String, MeasurementSchema> schemaMap; + + /** + * Corresponding storage group name for current node + */ + private String storageGroupName; + + private MNode parent; + + private String fullPath; + + /** + * Column's Schema for one timeseries represented by current node if current node is one leaf + */ + MeasurementSchema schema; + + Map<String, MNode> children; + + MNodeType nodeType; + + /** + * when the data in a storage group is older than dataTTL, it is considered invalid and will be + * eventually removed. only set at storage group level. + */ + private long dataTTL = Long.MAX_VALUE; Review comment: Moved. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
