| /* |
| * 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.utils.Binary; |
| import org.apache.iotdb.tsfile.write.TsFileWriter; |
| import org.apache.iotdb.tsfile.write.record.Tablet; |
| 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.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 Tablet to TsFile */ |
| public class TsFileWriteWithTablet { |
| |
| private static final Logger logger = LoggerFactory.getLogger(TsFileWriteWithTablet.class); |
| |
| public static void main(String[] args) { |
| try { |
| String path = "Tablet.tsfile"; |
| File f = FSFactoryProducer.getFSFactory().getFile(path); |
| if (f.exists() && !f.delete()) { |
| throw new RuntimeException("can not delete " + f.getAbsolutePath()); |
| } |
| |
| try (TsFileWriter tsFileWriter = new TsFileWriter(f)) { |
| List<MeasurementSchema> measurementSchemas = new ArrayList<>(); |
| measurementSchemas.add(new MeasurementSchema(SENSOR_1, TSDataType.TEXT, TSEncoding.PLAIN)); |
| measurementSchemas.add(new MeasurementSchema(SENSOR_2, TSDataType.TEXT, TSEncoding.PLAIN)); |
| measurementSchemas.add(new MeasurementSchema(SENSOR_3, TSDataType.TEXT, TSEncoding.PLAIN)); |
| |
| // register nonAligned timeseries |
| tsFileWriter.registerTimeseries(new Path(DEVICE_1), measurementSchemas); |
| |
| List<MeasurementSchema> writeMeasurementScheams = new ArrayList<>(); |
| // example 1 |
| writeMeasurementScheams.add(measurementSchemas.get(0)); |
| writeMeasurementScheams.add(measurementSchemas.get(1)); |
| writeMeasurementScheams.add(measurementSchemas.get(2)); |
| writeWithTablet(tsFileWriter, DEVICE_1, writeMeasurementScheams, 10000, 0, 0); |
| } |
| } catch (Exception e) { |
| logger.error("meet error in TsFileWrite with tablet", e); |
| } |
| } |
| |
| private static void writeWithTablet( |
| TsFileWriter tsFileWriter, |
| String deviceId, |
| List<MeasurementSchema> schemas, |
| long rowNum, |
| long startTime, |
| long startValue) |
| throws IOException, WriteProcessException { |
| Tablet tablet = new Tablet(deviceId, schemas); |
| long[] timestamps = tablet.timestamps; |
| Object[] values = tablet.values; |
| long sensorNum = schemas.size(); |
| |
| for (long r = 0; r < rowNum; r++, startValue++) { |
| int row = tablet.rowSize++; |
| timestamps[row] = startTime++; |
| for (int i = 0; i < sensorNum; i++) { |
| Binary[] textSensor = (Binary[]) values[i]; |
| textSensor[row] = new Binary("testString........."); |
| } |
| // write |
| if (tablet.rowSize == tablet.getMaxRowNumber()) { |
| tsFileWriter.write(tablet); |
| tablet.reset(); |
| } |
| } |
| // write |
| if (tablet.rowSize != 0) { |
| tsFileWriter.write(tablet); |
| tablet.reset(); |
| } |
| } |
| } |