info.aduna.iteration
Class DistinctIteration<E,X extends Exception>

java.lang.Object
  info.aduna.iteration.CloseableIterationBase<E,X>
      info.aduna.iteration.IterationWrapper<E,X>
          info.aduna.iteration.FilterIteration<E,X>
              info.aduna.iteration.DistinctIteration<E,X>

All Implemented Interfaces:

CloseableIteration<E,X>, Iteration<E,X>

Direct Known Subclasses:

DistinctIterator

public class DistinctIteration<E,X extends Exception>
extends FilterIteration<E,X>

An Iteration that filters any duplicate elements from an underlying iterator.

Field Summary

Fields inherited from class info.aduna.iteration.IterationWrapper

wrappedIter

Fields inherited from class info.aduna.iteration.CloseableIterationBase

logger

Constructor Summary

DistinctIteration(Iteration<? extends E,? extends X> iter)
Creates a new DistinctIterator.

Method Summary

protected boolean	accept(E object) Returns true if the specified object hasn't been seen before.
protected void	handleClose() Closed this Iteration and also closes the wrapped Iteration if it is a CloseableIteration.

Methods inherited from class info.aduna.iteration.FilterIteration

hasNext, next

Methods inherited from class info.aduna.iteration.IterationWrapper

remove

Methods inherited from class info.aduna.iteration.CloseableIterationBase

close, isClosed

Methods inherited from class java.lang.Object

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

Constructor Detail

DistinctIteration

public DistinctIteration(Iteration<? extends E,? extends X> iter)

Creates a new DistinctIterator.

Parameters:

iter - The underlying iterator.

Method Detail

accept

protected boolean accept(E object)

Returns true if the specified object hasn't been seen before.

Specified by:

accept in class FilterIteration<E,X extends Exception>

Parameters:

object - The object to be tested.

Returns:

true if the object should be returned, false otherwise.

handleClose

protected void handleClose()
                    throws X extends Exception

Description copied from class: IterationWrapper

Closed this Iteration and also closes the wrapped Iteration if it is a CloseableIteration.

Overrides:

handleClose in class FilterIteration<E,X extends Exception>

Throws:

X

X extends Exception