| /* |
| * 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.pipe.processor.aggregate.operator.intermediateresult.sametype.numeric; |
| |
| import org.apache.iotdb.db.pipe.processor.aggregate.operator.intermediateresult.IntermediateResultOperator; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.tsfile.utils.Pair; |
| import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.Map; |
| |
| /** |
| * {@link AbstractSameTypeNumericOperator} is the parent class of all the operators where there |
| * value type is the same as the input data type, the input data type is a numeric type, and the |
| * initial value equals to the first input value. |
| */ |
| public abstract class AbstractSameTypeNumericOperator implements IntermediateResultOperator { |
| protected TSDataType outPutDataType; |
| protected int intValue; |
| protected long longValue; |
| protected float floatValue; |
| protected double doubleValue; |
| |
| @Override |
| public void configureSystemParameters(Map<String, String> systemParams) { |
| // Do nothing |
| } |
| |
| @Override |
| public boolean initAndGetIsSupport(boolean initialInput, long initialTimestamp) { |
| return false; |
| } |
| |
| @Override |
| public boolean initAndGetIsSupport(int initialInput, long initialTimestamp) { |
| outPutDataType = TSDataType.INT32; |
| return true; |
| } |
| |
| @Override |
| public boolean initAndGetIsSupport(long initialInput, long initialTimestamp) { |
| outPutDataType = TSDataType.INT64; |
| return true; |
| } |
| |
| @Override |
| public boolean initAndGetIsSupport(float initialInput, long initialTimestamp) { |
| outPutDataType = TSDataType.FLOAT; |
| return true; |
| } |
| |
| @Override |
| public boolean initAndGetIsSupport(double initialInput, long initialTimestamp) { |
| outPutDataType = TSDataType.DOUBLE; |
| return true; |
| } |
| |
| @Override |
| public boolean initAndGetIsSupport(String initialInput, long initialTimestamp) { |
| return false; |
| } |
| |
| @Override |
| public void updateValue(boolean input, long timestamp) { |
| throw new UnsupportedOperationException( |
| "AbstractSameTypeNumericOperator does not support boolean input"); |
| } |
| |
| @Override |
| public void updateValue(String input, long timestamp) { |
| throw new UnsupportedOperationException( |
| "AbstractSameTypeNumericOperator does not support string input"); |
| } |
| |
| @Override |
| public Pair<TSDataType, Object> getResult() { |
| switch (outPutDataType) { |
| case INT32: |
| return new Pair<>(TSDataType.INT32, intValue); |
| case INT64: |
| return new Pair<>(TSDataType.INT64, longValue); |
| case FLOAT: |
| return new Pair<>(TSDataType.FLOAT, floatValue); |
| case DOUBLE: |
| return new Pair<>(TSDataType.DOUBLE, doubleValue); |
| default: |
| return null; |
| } |
| } |
| |
| @Override |
| public void serialize(DataOutputStream outputStream) throws IOException { |
| outPutDataType.serializeTo(outputStream); |
| switch (outPutDataType) { |
| case INT32: |
| ReadWriteIOUtils.write(intValue, outputStream); |
| break; |
| case INT64: |
| ReadWriteIOUtils.write(longValue, outputStream); |
| break; |
| case FLOAT: |
| ReadWriteIOUtils.write(floatValue, outputStream); |
| break; |
| case DOUBLE: |
| ReadWriteIOUtils.write(doubleValue, outputStream); |
| break; |
| default: |
| throw new IOException(String.format("Unsupported output datatype %s", outPutDataType)); |
| } |
| } |
| |
| @Override |
| public void deserialize(ByteBuffer byteBuffer) throws IOException { |
| outPutDataType = TSDataType.deserializeFrom(byteBuffer); |
| switch (outPutDataType) { |
| case INT32: |
| intValue = ReadWriteIOUtils.readInt(byteBuffer); |
| break; |
| case INT64: |
| longValue = ReadWriteIOUtils.readLong(byteBuffer); |
| break; |
| case FLOAT: |
| floatValue = ReadWriteIOUtils.readFloat(byteBuffer); |
| break; |
| case DOUBLE: |
| doubleValue = ReadWriteIOUtils.readDouble(byteBuffer); |
| break; |
| default: |
| throw new IOException(String.format("Unsupported output datatype %s", outPutDataType)); |
| } |
| } |
| } |