| /* |
| * 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.common.conf.TSFileDescriptor; |
| import org.apache.iotdb.tsfile.encoding.encoder.Encoder; |
| import org.apache.iotdb.tsfile.encoding.encoder.TSEncodingBuilder; |
| import org.apache.iotdb.tsfile.file.metadata.enums.CompressionType; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding; |
| import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils; |
| import org.apache.iotdb.tsfile.utils.StringContainer; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.Serializable; |
| import java.nio.ByteBuffer; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Objects; |
| |
| /** |
| * TimeseriesSchema is like MeasurementSchema, but instead of measurementId, it stores the full |
| * path. |
| */ |
| public class TimeseriesSchema implements Comparable<TimeseriesSchema>, Serializable { |
| private String fullPath; |
| private TSDataType type; |
| private TSEncoding encoding; |
| private transient TSEncodingBuilder encodingConverter; |
| private CompressionType compressor; |
| private Map<String, String> props = new HashMap<>(); |
| |
| public TimeseriesSchema() {} |
| |
| public TimeseriesSchema(String fullPath, TSDataType tsDataType) { |
| this( |
| fullPath, |
| tsDataType, |
| TSEncoding.valueOf(TSFileDescriptor.getInstance().getConfig().getValueEncoder()), |
| TSFileDescriptor.getInstance().getConfig().getCompressor(), |
| Collections.emptyMap()); |
| } |
| |
| /** set properties as an empty Map. */ |
| public TimeseriesSchema(String fullPath, TSDataType type, TSEncoding encoding) { |
| this( |
| fullPath, |
| type, |
| encoding, |
| TSFileDescriptor.getInstance().getConfig().getCompressor(), |
| Collections.emptyMap()); |
| } |
| |
| public TimeseriesSchema( |
| String fullPath, TSDataType type, TSEncoding encoding, CompressionType compressionType) { |
| this(fullPath, type, encoding, compressionType, Collections.emptyMap()); |
| } |
| |
| /** |
| * Constructor of TimeseriesSchema. |
| * |
| * <p>props - information in encoding method. For RLE, Encoder.MAX_POINT_NUMBER For PLAIN, |
| * Encoder.maxStringLength |
| */ |
| public TimeseriesSchema( |
| String fullPath, |
| TSDataType type, |
| TSEncoding encoding, |
| CompressionType compressionType, |
| Map<String, String> props) { |
| this.type = type; |
| this.fullPath = fullPath; |
| this.encoding = encoding; |
| this.props = props == null ? Collections.emptyMap() : props; |
| this.compressor = compressionType; |
| } |
| |
| /** function for deserializing data from byte buffer. */ |
| public static TimeseriesSchema deserializeFrom(ByteBuffer buffer) { |
| TimeseriesSchema timeseriesSchema = new TimeseriesSchema(); |
| |
| timeseriesSchema.fullPath = ReadWriteIOUtils.readString(buffer); |
| |
| timeseriesSchema.type = ReadWriteIOUtils.readDataType(buffer); |
| |
| timeseriesSchema.encoding = ReadWriteIOUtils.readEncoding(buffer); |
| |
| timeseriesSchema.compressor = ReadWriteIOUtils.readCompressionType(buffer); |
| |
| int size = ReadWriteIOUtils.readInt(buffer); |
| if (size > 0) { |
| timeseriesSchema.props = new HashMap<>(); |
| String key; |
| String value; |
| for (int i = 0; i < size; i++) { |
| key = ReadWriteIOUtils.readString(buffer); |
| value = ReadWriteIOUtils.readString(buffer); |
| timeseriesSchema.props.put(key, value); |
| } |
| } |
| |
| return timeseriesSchema; |
| } |
| |
| public String getFullPath() { |
| return fullPath; |
| } |
| |
| public void setFullPath(String fullPath) { |
| this.fullPath = fullPath; |
| } |
| |
| public Map<String, String> getProps() { |
| return props; |
| } |
| |
| public TSEncoding getEncodingType() { |
| return encoding; |
| } |
| |
| public TSDataType getType() { |
| return type; |
| } |
| |
| public void setProps(Map<String, String> props) { |
| this.props = props; |
| } |
| |
| /** function for getting time encoder. */ |
| public Encoder getTimeEncoder() { |
| TSEncoding timeEncoding = |
| TSEncoding.valueOf(TSFileDescriptor.getInstance().getConfig().getTimeEncoder()); |
| TSDataType timeType = TSFileDescriptor.getInstance().getConfig().getTimeSeriesDataType(); |
| return TSEncodingBuilder.getEncodingBuilder(timeEncoding).getEncoder(timeType); |
| } |
| |
| /** |
| * get Encoder of value from encodingConverter by measurementID and data type. |
| * |
| * @return Encoder for value |
| */ |
| public Encoder getValueEncoder() { |
| // it is ok even if encodingConverter is constructed two instances for concurrent scenario |
| if (encodingConverter == null) { |
| // initialize TSEncoding. e.g. set max error for PLA and SDT |
| encodingConverter = TSEncodingBuilder.getEncodingBuilder(encoding); |
| encodingConverter.initFromProps(props); |
| } |
| return encodingConverter.getEncoder(type); |
| } |
| |
| public CompressionType getCompressor() { |
| return compressor; |
| } |
| |
| /** function for serializing data to output stream. */ |
| public int serializeTo(OutputStream outputStream) throws IOException { |
| int byteLen = 0; |
| |
| byteLen += ReadWriteIOUtils.write(fullPath, outputStream); |
| |
| byteLen += ReadWriteIOUtils.write(type, outputStream); |
| |
| byteLen += ReadWriteIOUtils.write(encoding, outputStream); |
| |
| byteLen += ReadWriteIOUtils.write(compressor, outputStream); |
| |
| if (props == null) { |
| byteLen += ReadWriteIOUtils.write(0, outputStream); |
| } else { |
| byteLen += ReadWriteIOUtils.write(props.size(), outputStream); |
| for (Map.Entry<String, String> entry : props.entrySet()) { |
| byteLen += ReadWriteIOUtils.write(entry.getKey(), outputStream); |
| byteLen += ReadWriteIOUtils.write(entry.getValue(), outputStream); |
| } |
| } |
| |
| return byteLen; |
| } |
| |
| /** function for serializing data to byte buffer. */ |
| public int serializeTo(ByteBuffer buffer) { |
| int byteLen = 0; |
| |
| byteLen += ReadWriteIOUtils.write(fullPath, buffer); |
| |
| byteLen += ReadWriteIOUtils.write(type, buffer); |
| |
| byteLen += ReadWriteIOUtils.write(encoding, buffer); |
| |
| byteLen += ReadWriteIOUtils.write(compressor, buffer); |
| |
| if (props == null) { |
| byteLen += ReadWriteIOUtils.write(0, buffer); |
| } else { |
| byteLen += ReadWriteIOUtils.write(props.size(), buffer); |
| for (Map.Entry<String, String> entry : props.entrySet()) { |
| byteLen += ReadWriteIOUtils.write(entry.getKey(), buffer); |
| byteLen += ReadWriteIOUtils.write(entry.getValue(), buffer); |
| } |
| } |
| |
| return byteLen; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| TimeseriesSchema that = (TimeseriesSchema) o; |
| return type == that.type |
| && encoding == that.encoding |
| && Objects.equals(fullPath, that.fullPath) |
| && Objects.equals(compressor, that.compressor); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(type, encoding, fullPath, compressor); |
| } |
| |
| /** compare by full path. */ |
| @Override |
| public int compareTo(TimeseriesSchema o) { |
| if (equals(o)) { |
| return 0; |
| } else { |
| return this.fullPath.compareTo(o.fullPath); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| StringContainer sc = new StringContainer(""); |
| sc.addTail( |
| "[", |
| fullPath, |
| ",", |
| type.toString(), |
| ",", |
| encoding.toString(), |
| ",", |
| props.toString(), |
| ",", |
| compressor.toString()); |
| sc.addTail("]"); |
| return sc.toString(); |
| } |
| } |