org.gcube.data.streams.generators
Class Processor<E>

java.lang.Object
  org.gcube.data.streams.generators.Filter<E,E>
      org.gcube.data.streams.generators.Processor<E>

Type Parameters:

E - the type of input elements

All Implemented Interfaces:

Generator<E,E>

public abstract class Processor<E>
extends Filter<E,E>

A Filter that changes the elements of the input Stream.

Author:

Fabio Simeoni

Constructor Summary

Processor()

Method Summary

protected abstract void	process(E element) Processes an element of a Stream.
E	yield(E element) Yields an element of a Stream from an element of another Stream.

Methods inherited from class org.gcube.data.streams.generators.Filter

skip

Methods inherited from class java.lang.Object

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

Constructor Detail

Processor

public Processor()

Method Detail

yield

public final E yield(E element)
              throws StreamSkipException,
                     StreamContingencyException

Description copied from interface: Generator

Yields an element of a Stream from an element of another Stream.

Parameters:

element - the input element

Returns:

the output element

Throws:

StreamSkipException - if no element should be yielded from the input element

StreamContingencyException - if no element can be yielded, because the input element violates pre-conditions

process

protected abstract void process(E element)
                         throws StreamSkipException,
                                StreamContingencyException

Processes an element of a Stream.

Parameters:

element - the input element

Throws:

StreamSkipException - if no element should be yielded from the input element

StreamContingencyException - if no element can be yielded, because the input element violates pre-conditions

RuntimeException - if no element can be yielded from the input element, becuase of an unrecoverable condition