Package org.apache.iotdb.commons.udf.builtin

Class UDTFNonNegativeDerivative

java.lang.Object

org.apache.iotdb.commons.udf.builtin.UDTFValueTrend

org.apache.iotdb.commons.udf.builtin.UDTFDerivative

org.apache.iotdb.commons.udf.builtin.UDTFNonNegativeDerivative

All Implemented Interfaces:

org.apache.iotdb.udf.api.UDF, org.apache.iotdb.udf.api.UDTF

public class UDTFNonNegativeDerivative
extends UDTFDerivative

Field Summary

Fields inherited from class org.apache.iotdb.commons.udf.builtin.UDTFDerivative

previousTime

Fields inherited from class org.apache.iotdb.commons.udf.builtin.UDTFValueTrend

dataType, hasPrevious, previousDouble, previousFloat, previousInt, previousLong

Constructor Summary

Constructors

Constructor	Description
UDTFNonNegativeDerivative()

Method Summary

Modifier and Type	Method	Description
protected void	doTransform(org.apache.iotdb.udf.api.access.Row row, org.apache.iotdb.udf.api.collector.PointCollector collector)

Methods inherited from class org.apache.iotdb.commons.udf.builtin.UDTFDerivative

beforeStart, transform

Methods inherited from class org.apache.iotdb.commons.udf.builtin.UDTFValueTrend

updatePreviousValue, validate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.iotdb.udf.api.UDF

beforeDestroy

Methods inherited from interface org.apache.iotdb.udf.api.UDTF

terminate, transform, transform

Constructor Detail

UDTFNonNegativeDerivative

public UDTFNonNegativeDerivative()

Method Detail

doTransform

protected void doTransform(org.apache.iotdb.udf.api.access.Row row,
                           org.apache.iotdb.udf.api.collector.PointCollector collector)
                    throws org.apache.iotdb.udf.api.exception.UDFInputSeriesDataTypeNotValidException,
                           java.io.IOException

Specified by:

doTransform in class UDTFValueTrend

Throws:

org.apache.iotdb.udf.api.exception.UDFInputSeriesDataTypeNotValidException

java.io.IOException