| /* |
| * 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; |
| |
| import org.apache.iotdb.tsfile.exception.write.WriteProcessException; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding; |
| import org.apache.iotdb.tsfile.fileSystem.FSFactoryProducer; |
| import org.apache.iotdb.tsfile.read.common.Path; |
| import org.apache.iotdb.tsfile.write.TsFileWriter; |
| import org.apache.iotdb.tsfile.write.record.TSRecord; |
| import org.apache.iotdb.tsfile.write.record.datapoint.DataPoint; |
| import org.apache.iotdb.tsfile.write.record.datapoint.LongDataPoint; |
| import org.apache.iotdb.tsfile.write.schema.IMeasurementSchema; |
| import org.apache.iotdb.tsfile.write.schema.MeasurementSchema; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static org.apache.iotdb.tsfile.Constant.DEVICE_1; |
| import static org.apache.iotdb.tsfile.Constant.SENSOR_1; |
| import static org.apache.iotdb.tsfile.Constant.SENSOR_2; |
| import static org.apache.iotdb.tsfile.Constant.SENSOR_3; |
| |
| /** |
| * An example of writing data with TSRecord to TsFile It uses the interface: public void |
| * addMeasurement(MeasurementSchema measurementSchema) throws WriteProcessException |
| */ |
| public class TsFileWriteWithTSRecord { |
| private static final Logger LOGGER = LoggerFactory.getLogger(TsFileWriteWithTSRecord.class); |
| |
| public static void main(String[] args) { |
| try { |
| String path = "Record.tsfile"; |
| File f = FSFactoryProducer.getFSFactory().getFile(path); |
| if (f.exists()) { |
| Files.delete(f.toPath()); |
| } |
| |
| try (TsFileWriter tsFileWriter = new TsFileWriter(f)) { |
| List<MeasurementSchema> schemas = new ArrayList<>(); |
| schemas.add(new MeasurementSchema(SENSOR_1, TSDataType.INT64, TSEncoding.RLE)); |
| schemas.add(new MeasurementSchema(SENSOR_2, TSDataType.INT64, TSEncoding.RLE)); |
| schemas.add(new MeasurementSchema(SENSOR_3, TSDataType.INT64, TSEncoding.RLE)); |
| |
| // register timeseries |
| tsFileWriter.registerTimeseries(new Path(DEVICE_1), schemas); |
| |
| // example1 |
| write(tsFileWriter, DEVICE_1, schemas, 10000, 0, 0); |
| } |
| } catch (Exception e) { |
| LOGGER.error("TsFileWriteWithTSRecord meet error", e); |
| } |
| } |
| |
| private static void write( |
| TsFileWriter tsFileWriter, |
| String deviceId, |
| List<MeasurementSchema> schemas, |
| long rowSize, |
| long startTime, |
| long startValue) |
| throws IOException, WriteProcessException { |
| for (long time = startTime; time < rowSize + startTime; time++) { |
| // construct TsRecord |
| TSRecord tsRecord = new TSRecord(time, deviceId); |
| for (IMeasurementSchema schema : schemas) { |
| DataPoint dPoint = new LongDataPoint(schema.getMeasurementId(), startValue++); |
| tsRecord.addTuple(dPoint); |
| } |
| // write |
| tsFileWriter.write(tsRecord); |
| } |
| } |
| } |