org.apache.jena.util.iterator

Class MapFilterIterator<T,X>

java.lang.Object

org.apache.jena.util.iterator.NiceIterator<X>

org.apache.jena.util.iterator.MapFilterIterator<T,X>

All Implemented Interfaces:

Iterator<X>, ClosableIterator<X>, ExtendedIterator<X>

public class MapFilterIterator<T,X>
extends NiceIterator<X>
implements ExtendedIterator<X>

A MapFilterIterator takes a MapFilter and an [Extended]Iterator and returns a new ExtendedIterator which delivers the sequence of all non-null elements MapFilter(X) for X from the base iterator.

Constructor Summary

Constructors

Constructor and Description
MapFilterIterator(MapFilter<T,X> fl, ExtendedIterator<T> e) Creates a sub-Iterator.

Method Summary

Modifier and Type	Method and Description
void	close() default close: don't need to do anything.
boolean	hasNext() Are there any more acceptable objects.
X	next() The next acceptable object in the iterator.
void	remove() remove's the member from the underlying Iterator; hasNext() may not be called between calls to next() and remove().

Methods inherited from class org.apache.jena.util.iterator.NiceIterator

andThen, andThen, asList, asSet, close, emptyIterator, filterDrop, filterKeep, mapWith, removeNext, toList, toSet

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.jena.util.iterator.ExtendedIterator

andThen, filterDrop, filterKeep, mapWith, nextOptional, removeNext, toList, toSet

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Detail

MapFilterIterator

public MapFilterIterator(MapFilter<T,X> fl,
                         ExtendedIterator<T> e)

Creates a sub-Iterator.

Parameters:

fl - An object is included if it is accepted by this Filter.

e - The parent Iterator.

Method Detail

hasNext

public boolean hasNext()

Are there any more acceptable objects.

Specified by:

hasNext in interface Iterator<X>

Overrides:

hasNext in class NiceIterator<X>

Returns:

true if there is another acceptable object.

close

public void close()

Description copied from class: NiceIterator

default close: don't need to do anything.

Specified by:

close in interface ClosableIterator<X>

Overrides:

close in class NiceIterator<X>

remove

public void remove()

remove's the member from the underlying Iterator; hasNext() may not be called between calls to next() and remove().

Specified by:

remove in interface Iterator<X>

Overrides:

remove in class NiceIterator<X>

next

public X next()

The next acceptable object in the iterator.

Specified by:

next in interface Iterator<X>

Overrides:

next in class NiceIterator<X>

Returns:

The next acceptable object.