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

Class UDTFMath

java.lang.Object

org.apache.iotdb.commons.udf.builtin.UDTFMath

All Implemented Interfaces:

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

Direct Known Subclasses:

UDTFAbs, UDTFAcos, UDTFAsin, UDTFAtan, UDTFCeil, UDTFCos, UDTFCosh, UDTFDegrees, UDTFExp, UDTFFloor, UDTFLog, UDTFLog10, UDTFRadians, UDTFRound, UDTFSign, UDTFSin, UDTFSinh, UDTFSqrt, UDTFTan, UDTFTanh

public abstract class UDTFMath
extends java.lang.Object
implements org.apache.iotdb.udf.api.UDTF

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static interface	UDTFMath.Transformer

Field Summary

Fields

Modifier and Type	Field	Description
protected org.apache.iotdb.tsfile.file.metadata.enums.TSDataType	dataType
protected UDTFMath.Transformer	transformer

Constructor Summary

Constructors

Constructor	Description
UDTFMath()

Method Summary

Modifier and Type	Method	Description
void	beforeStart(org.apache.iotdb.udf.api.customizer.parameter.UDFParameters parameters, org.apache.iotdb.udf.api.customizer.config.UDTFConfigurations configurations)
protected abstract void	setTransformer()
java.lang.Object	transform(org.apache.iotdb.udf.api.access.Row row)
void	transform(org.apache.iotdb.udf.api.access.Row row, org.apache.iotdb.udf.api.collector.PointCollector collector)
void	validate(org.apache.iotdb.udf.api.customizer.parameter.UDFParameterValidator validator)

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

Field Detail

transformer

protected UDTFMath.Transformer transformer

dataType

protected org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType

Constructor Detail

UDTFMath

public UDTFMath()

Method Detail

validate

public void validate(org.apache.iotdb.udf.api.customizer.parameter.UDFParameterValidator validator)
              throws org.apache.iotdb.udf.api.exception.UDFException

Specified by:

validate in interface org.apache.iotdb.udf.api.UDF

Throws:

org.apache.iotdb.udf.api.exception.UDFException

beforeStart

public void beforeStart(org.apache.iotdb.udf.api.customizer.parameter.UDFParameters parameters,
                        org.apache.iotdb.udf.api.customizer.config.UDTFConfigurations configurations)
                 throws MetadataException

Specified by:

beforeStart in interface org.apache.iotdb.udf.api.UDTF

Throws:

MetadataException

setTransformer

protected abstract void setTransformer()

transform

public void transform(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:

transform in interface org.apache.iotdb.udf.api.UDTF

Throws:

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

java.io.IOException

transform

public java.lang.Object transform(org.apache.iotdb.udf.api.access.Row row)
                           throws java.io.IOException

Specified by:

transform in interface org.apache.iotdb.udf.api.UDTF

Throws:

java.io.IOException