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

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

All Implemented Interfaces:

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

Direct Known Subclasses:

CloseableIteratorIteration, CollectionIteration, ConvertingIteration, DelayedIteration, EmptyIteration, ExceptionConvertingIteration, IterationWrapper, LookAheadIteration, RepositoryResult, SingletonIteration

public abstract class CloseableIterationBase<E,X extends Exception>
extends Object
implements CloseableIteration<E,X>

Base class for CloseableIterations offering common functionality. This class keeps track of whether the iteration has been closed and handles multiple calls to close() by ignoring all but the first call.

Constructor Summary

CloseableIterationBase()

Method Summary

void	close() Calls handleClose() upon first call and makes sure this method gets called only once.
protected void	handleClose() Called by close() when it is called for the first time.
boolean	isClosed() Checks whether this CloseableIteration has been closed.

Methods inherited from class java.lang.Object

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

Methods inherited from interface info.aduna.iteration.Iteration

hasNext, next, remove

Constructor Detail

CloseableIterationBase

public CloseableIterationBase()

Method Detail

isClosed

public final boolean isClosed()

Checks whether this CloseableIteration has been closed.

Returns:

true if the CloseableIteration has been closed, false otherwise.

close

public final void close()
                 throws X extends Exception

Calls handleClose() upon first call and makes sure this method gets called only once.

Specified by:

close in interface CloseableIteration<E,X extends Exception>

Throws:

X extends Exception

handleClose

protected void handleClose()
                    throws X extends Exception

Called by close() when it is called for the first time. This method is only called once on each iteration. By default, this method does nothing.

Throws:

X

X extends Exception