it.cnr.isti.hpc.dexter.spot.cleanpipe.mapper

Class Mapper<T>

java.lang.Object

it.cnr.isti.hpc.dexter.spot.cleanpipe.Function<T>

it.cnr.isti.hpc.dexter.spot.cleanpipe.mapper.Mapper<T>

Direct Known Subclasses:

CityMapper, QuotesMapper, TypeMapper

public abstract class Mapper<T>
extends Function<T>

Mapper given a spot returns several different versions of the spot.

Author:

Diego Ceccarelli, diego.ceccarelli@isti.cnr.it created on 20/lug/2012

Constructor Summary

Constructors

Constructor and Description
Mapper()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	eval(T elem, Pipe.OutputCollector collector) Performs the manipulation, eventual outputs produced by the function are output using the collector object.
abstract Set<T>	map(T elem) given a spot returns several different versions of the spot.

Methods inherited from class java.lang.Object

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

Constructor Detail

Mapper

public Mapper()

Method Detail

eval

protected void eval(T elem,
        Pipe.OutputCollector collector)

Description copied from class: Function

Performs the manipulation, eventual outputs produced by the function are output using the collector object.

Specified by:

eval in class Function<T>

Parameters:

elem - - the object to manipulate

collector - - the output collector, use the method pushResult to output one or more manipulations

map

public abstract Set<T> map(T elem)

given a spot returns several different versions of the spot.

Parameters:

spot - the spot to be transformed in several versions

Returns:

a set containing the different versions of the spot.