org.datavec.api.transform.transform.time

Class TimeMathOpTransform

java.lang.Object

org.datavec.api.transform.transform.BaseTransform

org.datavec.api.transform.transform.BaseColumnTransform

org.datavec.api.transform.transform.time.TimeMathOpTransform

All Implemented Interfaces:

Serializable, ColumnOp, Operation<Schema,Schema>, Transform

public class TimeMathOpTransform
extends BaseColumnTransform

Transform math op on a time column

Note: only the following MathOps are supported: Add, Subtract, ScalarMin, ScalarMax
For ScalarMin/Max, the TimeUnit must be milliseconds - i.e., value must be in epoch millisecond format

Author:

Alex Black

See Also:

Serialized Form

Field Summary

Fields inherited from class org.datavec.api.transform.transform.BaseColumnTransform

columnName, columnNumber

Fields inherited from class org.datavec.api.transform.transform.BaseTransform

inputSchema

Constructor Summary

Constructors

Constructor and Description
TimeMathOpTransform(String columnName, MathOp mathOp, long timeQuantity, TimeUnit timeUnit)

Method Summary

Modifier and Type	Method and Description
ColumnMetaData	getNewColumnMetaData(String newName, ColumnMetaData oldColumnType)
Object	map(Object input) Transform an object in to another object
Writable	map(Writable columnWritable)
String	toString()

Methods inherited from class org.datavec.api.transform.transform.BaseColumnTransform

columnName, columnNames, equals, hashCode, map, mapSequence, outputColumnName, outputColumnNames, setInputSchema, transform

Methods inherited from class org.datavec.api.transform.transform.BaseTransform

getInputSchema, mapSequence

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.datavec.api.transform.ColumnOp

getInputSchema

Constructor Detail

TimeMathOpTransform

public TimeMathOpTransform(String columnName,
                           MathOp mathOp,
                           long timeQuantity,
                           TimeUnit timeUnit)

Method Detail

getNewColumnMetaData

public ColumnMetaData getNewColumnMetaData(String newName,
                                           ColumnMetaData oldColumnType)

Specified by:

getNewColumnMetaData in class BaseColumnTransform

map

public Writable map(Writable columnWritable)

Specified by:

map in class BaseColumnTransform

toString

public String toString()

Specified by:

toString in class BaseColumnTransform

map

public Object map(Object input)

Transform an object in to another object

Parameters:

input - the record to transform

Returns:

the transformed writable