| /* |
| * 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.commons.udf.builtin; |
| |
| import org.apache.iotdb.commons.exception.MetadataException; |
| import org.apache.iotdb.commons.udf.utils.UDFDataTypeTransformer; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.tsfile.utils.Pair; |
| import org.apache.iotdb.udf.api.UDTF; |
| import org.apache.iotdb.udf.api.access.Row; |
| import org.apache.iotdb.udf.api.collector.PointCollector; |
| import org.apache.iotdb.udf.api.customizer.config.UDTFConfigurations; |
| import org.apache.iotdb.udf.api.customizer.parameter.UDFParameterValidator; |
| import org.apache.iotdb.udf.api.customizer.parameter.UDFParameters; |
| import org.apache.iotdb.udf.api.customizer.strategy.RowByRowAccessStrategy; |
| import org.apache.iotdb.udf.api.exception.UDFException; |
| import org.apache.iotdb.udf.api.exception.UDFInputSeriesDataTypeNotValidException; |
| import org.apache.iotdb.udf.api.type.Type; |
| |
| import java.io.IOException; |
| |
| public abstract class UDTFContinuouslySatisfy implements UDTF { |
| protected long min; |
| protected long max; |
| protected TSDataType dataType; |
| protected long satisfyValueCount; |
| protected long satisfyValueLastTime; |
| protected long satisfyValueStartTime; |
| protected Pair<Long, Long> interval; |
| |
| @Override |
| public void validate(UDFParameterValidator validator) throws UDFException { |
| validator |
| .validateInputSeriesNumber(1) |
| .validateInputSeriesDataType( |
| 0, Type.INT32, Type.INT64, Type.FLOAT, Type.DOUBLE, Type.BOOLEAN) |
| .validate( |
| args -> (Long) args[1] >= (Long) args[0], |
| "max can not be smaller than min.", |
| validator.getParameters().getLongOrDefault("min", getDefaultMin()), |
| validator.getParameters().getLongOrDefault("max", getDefaultMax())) |
| .validate( |
| min -> (Long) min >= getDefaultMin(), |
| "min can not be smaller than " + getDefaultMin() + ".", |
| validator.getParameters().getLongOrDefault("min", getDefaultMin())); |
| } |
| |
| protected abstract long getDefaultMin(); |
| |
| protected abstract long getDefaultMax(); |
| |
| @Override |
| public void beforeStart(UDFParameters parameters, UDTFConfigurations configurations) |
| throws MetadataException, UDFInputSeriesDataTypeNotValidException { |
| satisfyValueCount = 0L; |
| satisfyValueStartTime = 0L; |
| satisfyValueLastTime = -1L; |
| |
| dataType = UDFDataTypeTransformer.transformToTsDataType(parameters.getDataType(0)); |
| min = parameters.getLongOrDefault("min", getDefaultMin()); |
| max = parameters.getLongOrDefault("max", getDefaultMax()); |
| configurations.setAccessStrategy(new RowByRowAccessStrategy()).setOutputDataType(Type.INT64); |
| } |
| |
| @Override |
| public void transform(Row row, PointCollector collector) |
| throws IOException, UDFInputSeriesDataTypeNotValidException { |
| boolean needAddNewRecord; |
| switch (dataType) { |
| case INT32: |
| needAddNewRecord = transformInt(row.getTime(), row.getInt(0)); |
| break; |
| case INT64: |
| needAddNewRecord = transformLong(row.getTime(), row.getLong(0)); |
| break; |
| case FLOAT: |
| needAddNewRecord = transformFloat(row.getTime(), row.getFloat(0)); |
| break; |
| case DOUBLE: |
| needAddNewRecord = transformDouble(row.getTime(), row.getDouble(0)); |
| break; |
| case BOOLEAN: |
| needAddNewRecord = transformBoolean(row.getTime(), row.getBoolean(0)); |
| break; |
| default: |
| // This will not happen |
| throw new UDFInputSeriesDataTypeNotValidException( |
| 0, |
| UDFDataTypeTransformer.transformToUDFDataType(dataType), |
| Type.INT32, |
| Type.INT64, |
| Type.FLOAT, |
| Type.DOUBLE); |
| } |
| if (needAddNewRecord) { |
| collector.putLong(interval.left, interval.right); |
| } |
| } |
| |
| protected boolean transformDouble(long time, double value) { |
| if (satisfyDouble(value)) { |
| if (satisfyValueCount == 0L) { |
| satisfyValueStartTime = time; |
| } |
| satisfyValueCount++; |
| satisfyValueLastTime = time; |
| } else if (getRecord() >= min && getRecord() <= max && satisfyValueCount > 0) { |
| interval = new Pair<>(satisfyValueStartTime, getRecord()); |
| satisfyValueCount = 0L; |
| return true; |
| } else { |
| satisfyValueCount = 0L; |
| } |
| return false; |
| } |
| |
| protected boolean transformFloat(long time, float value) { |
| if (satisfyFloat(value)) { |
| if (satisfyValueCount == 0L) { |
| satisfyValueStartTime = time; |
| } |
| satisfyValueCount++; |
| satisfyValueLastTime = time; |
| } else if (getRecord() >= min && getRecord() <= max && satisfyValueCount > 0) { |
| interval = new Pair<>(satisfyValueStartTime, getRecord()); |
| satisfyValueCount = 0L; |
| return true; |
| } else { |
| satisfyValueCount = 0L; |
| } |
| return false; |
| } |
| |
| protected boolean transformLong(long time, long value) { |
| if (satisfyLong(value)) { |
| if (satisfyValueCount == 0L) { |
| satisfyValueStartTime = time; |
| } |
| satisfyValueCount++; |
| satisfyValueLastTime = time; |
| } else if (getRecord() >= min && getRecord() <= max && satisfyValueCount > 0) { |
| interval = new Pair<>(satisfyValueStartTime, getRecord()); |
| satisfyValueCount = 0L; |
| return true; |
| } else { |
| satisfyValueCount = 0L; |
| } |
| return false; |
| } |
| |
| protected boolean transformInt(long time, int value) { |
| if (satisfyInt(value)) { |
| if (satisfyValueCount == 0L) { |
| satisfyValueStartTime = time; |
| } |
| satisfyValueCount++; |
| satisfyValueLastTime = time; |
| } else if (getRecord() >= min && getRecord() <= max && satisfyValueCount > 0) { |
| interval = new Pair<>(satisfyValueStartTime, getRecord()); |
| satisfyValueCount = 0L; |
| return true; |
| } else { |
| satisfyValueCount = 0L; |
| } |
| return false; |
| } |
| |
| protected boolean transformBoolean(long time, boolean value) { |
| if (satisfyBoolean(value)) { |
| if (satisfyValueCount == 0L) { |
| satisfyValueStartTime = time; |
| } |
| satisfyValueCount++; |
| satisfyValueLastTime = time; |
| } else if (getRecord() >= min && getRecord() <= max && satisfyValueCount > 0) { |
| interval = new Pair<>(satisfyValueStartTime, getRecord()); |
| satisfyValueCount = 0L; |
| return true; |
| } else { |
| satisfyValueCount = 0L; |
| } |
| return false; |
| } |
| |
| // To define the value you want to calculate. |
| // Return `satisfyValueCount`, for the number of data points in the interval |
| // Return `satisfyValueLastTime`, to get the interval start time and end time pair |
| // Return `satisfyValueLastTime - satisfyValueStartTime` for the interval duration |
| protected abstract Long getRecord(); |
| |
| @Override |
| public void terminate(PointCollector collector) |
| throws UDFInputSeriesDataTypeNotValidException, IOException { |
| switch (dataType) { |
| case INT32: |
| case INT64: |
| case FLOAT: |
| case DOUBLE: |
| case BOOLEAN: |
| if (satisfyValueCount > 0) { |
| if (getRecord() >= min && getRecord() <= max) { |
| collector.putLong(satisfyValueStartTime, getRecord()); |
| } |
| } |
| break; |
| default: |
| // This will not happen. |
| throw new UDFInputSeriesDataTypeNotValidException( |
| 0, |
| UDFDataTypeTransformer.transformToUDFDataType(dataType), |
| Type.INT32, |
| Type.INT64, |
| Type.FLOAT, |
| Type.DOUBLE); |
| } |
| } |
| |
| protected abstract boolean satisfyInt(int value); |
| |
| protected abstract boolean satisfyLong(long value); |
| |
| protected abstract boolean satisfyFloat(float value); |
| |
| protected abstract boolean satisfyDouble(double value); |
| |
| protected abstract boolean satisfyBoolean(Boolean value); |
| } |