org.datavec.api.transform.transform.string

Class StringMapTransform

java.lang.Object

org.datavec.api.transform.transform.BaseTransform

org.datavec.api.transform.transform.BaseColumnTransform

org.datavec.api.transform.transform.string.BaseStringTransform

org.datavec.api.transform.transform.string.StringMapTransform

All Implemented Interfaces:

Serializable, ColumnOp, Transform

public class StringMapTransform
extends BaseStringTransform

A simple String -> String map function. Keys in the map are the original values; the Values in the map are their replacements. If a String appears in the data but does not appear in the provided map (as a key), that String values will not be modified.

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
StringMapTransform(String columnName, Map<String,String> map)

Method Summary

Modifier and Type	Method and Description
Object	map(Object input) Transform an object in to another object
Text	map(Writable writable) Transform the writable in to a string

Methods inherited from class org.datavec.api.transform.transform.string.BaseStringTransform

getNewColumnMetaData

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

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

StringMapTransform

public StringMapTransform(String columnName,
                          Map<String,String> map)

Parameters:

columnName - Name of the column

map - Key: From. Value: To

Method Detail

map

public Text map(Writable writable)

Description copied from class: BaseStringTransform

Transform the writable in to a string

Specified by:

map in class BaseStringTransform

Parameters:

writable - the writable to transform

Returns:

the string form of this writable

map

public Object map(Object input)

Transform an object in to another object

Parameters:

input - the record to transform

Returns:

the transformed writable