stream.parser

Class NGrams

java.lang.Object

stream.AbstractProcessor

stream.parser.NGrams

All Implemented Interfaces:

Processor, StatefulProcessor

public class NGrams
extends AbstractProcessor

Author:

chris

Field Summary

Fields

Modifier and Type	Field and Description
(package private) String	key
(package private) static org.slf4j.Logger	log
(package private) Integer	n
(package private) String	prefix

Fields inherited from class stream.AbstractProcessor

context

Constructor Summary

Constructors

Constructor and Description
NGrams()

Method Summary

Modifier and Type	Method and Description
String	getKey()
Integer	getN()
String	getPrefix()
Data	process(Data data)
void	setKey(String key)
void	setN(Integer n)
void	setPrefix(String prefix)

Methods inherited from class stream.AbstractProcessor

finish, init, resetState

Methods inherited from class java.lang.Object

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

Field Detail

log

static org.slf4j.Logger log

key

String key

prefix

String prefix

n

Integer n

Constructor Detail

NGrams

public NGrams()

Method Detail

process

public Data process(Data data)

getKey

public String getKey()

Returns:

the key

setKey

@Parameter(required=true,
           description="The attribute which is to be split into n-grams")
public void setKey(String key)

Parameters:

key - the key to set

getN

public Integer getN()

Returns:

the n

setN

@Parameter(required=true,
           defaultValue="3",
           description="The length of the n-grams that are to be created")
public void setN(Integer n)

Parameters:

n - the n to set

getPrefix

public String getPrefix()

Returns:

the prefix

setPrefix

@Parameter(required=false,
           defaultValue="",
           description="An optional prefix that is to be prepended for all n-gram names before these are added to the data item")
public void setPrefix(String prefix)

Parameters:

prefix - the prefix to set