| /* |
| * 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.tsfile.write.schema; |
| |
| import org.apache.iotdb.tsfile.read.common.Path; |
| import org.apache.iotdb.tsfile.utils.MeasurementGroup; |
| |
| import java.io.Serializable; |
| import java.util.HashMap; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| |
| /** |
| * The schema of timeseries that exist in this file. The schemaTemplates is a simplified manner to |
| * batch create schema of timeseries. |
| */ |
| public class Schema implements Serializable { |
| |
| /** |
| * Path (devicePath) -> measurementSchema By default, use the LinkedHashMap to store the order of |
| * insertion |
| */ |
| private final Map<Path, MeasurementGroup> registeredTimeseries; |
| |
| /** template name -> (measurement -> MeasurementSchema) */ |
| private Map<String, MeasurementGroup> schemaTemplates; |
| |
| public Schema() { |
| this.registeredTimeseries = new LinkedHashMap<>(); |
| } |
| |
| public Schema(Map<Path, MeasurementGroup> knownSchema) { |
| this.registeredTimeseries = knownSchema; |
| } |
| |
| // This method can only register nonAligned timeseries. |
| public void registerTimeseries(Path devicePath, MeasurementSchema measurementSchema) { |
| MeasurementGroup group = |
| registeredTimeseries.getOrDefault(devicePath, new MeasurementGroup(false)); |
| group.getMeasurementSchemaMap().put(measurementSchema.getMeasurementId(), measurementSchema); |
| this.registeredTimeseries.put(devicePath, group); |
| } |
| |
| public void registerMeasurementGroup(Path devicePath, MeasurementGroup measurementGroup) { |
| this.registeredTimeseries.put(devicePath, measurementGroup); |
| } |
| |
| public void registerSchemaTemplate(String templateName, MeasurementGroup measurementGroup) { |
| if (schemaTemplates == null) { |
| schemaTemplates = new HashMap<>(); |
| } |
| this.schemaTemplates.put(templateName, measurementGroup); |
| } |
| |
| /** If template does not exist, an nonAligned timeseries is created by default */ |
| public void extendTemplate(String templateName, MeasurementSchema descriptor) { |
| if (schemaTemplates == null) { |
| schemaTemplates = new HashMap<>(); |
| } |
| MeasurementGroup measurementGroup = |
| this.schemaTemplates.getOrDefault( |
| templateName, new MeasurementGroup(false, new HashMap<>())); |
| measurementGroup.getMeasurementSchemaMap().put(descriptor.getMeasurementId(), descriptor); |
| this.schemaTemplates.put(templateName, measurementGroup); |
| } |
| |
| public void registerDevice(String deviceId, String templateName) { |
| if (!schemaTemplates.containsKey(templateName)) { |
| return; |
| } |
| Map<String, MeasurementSchema> template = |
| schemaTemplates.get(templateName).getMeasurementSchemaMap(); |
| boolean isAligned = schemaTemplates.get(templateName).isAligned(); |
| registerMeasurementGroup(new Path(deviceId), new MeasurementGroup(isAligned, template)); |
| } |
| |
| public MeasurementGroup getSeriesSchema(Path devicePath) { |
| return registeredTimeseries.get(devicePath); |
| } |
| |
| public Map<String, MeasurementGroup> getSchemaTemplates() { |
| return schemaTemplates; |
| } |
| |
| /** check if this schema contains a measurement named measurementId. */ |
| public boolean containsDevice(Path devicePath) { |
| return registeredTimeseries.containsKey(devicePath); |
| } |
| |
| // for test |
| public Map<Path, MeasurementGroup> getRegisteredTimeseriesMap() { |
| return registeredTimeseries; |
| } |
| } |