org.openrdf.util.iterators
Class FilterIterator<E>

java.lang.Object
  org.openrdf.util.iterators.FilterIterator<E>

All Implemented Interfaces:

Iterator<E>

public abstract class FilterIterator<E>
extends Object
implements Iterator<E>

A CloseableIterator that wraps another iterator, applying a filter on the objects that are returned. Subclasses must implement the accept method to indicate which objects should be returned.

Constructor Summary

FilterIterator(Iterator<? extends E> iter)

Method Summary

protected abstract boolean	accept(E object) Tests whether or not the specified object should be returned by this iterator.
boolean	hasNext()
E	next()
void	remove()

Methods inherited from class java.lang.Object

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

Constructor Detail

FilterIterator

public FilterIterator(Iterator<? extends E> iter)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<E>

next

public E next()

Specified by:

next in interface Iterator<E>

remove

public void remove()

Specified by:

remove in interface Iterator<E>

accept

protected abstract boolean accept(E object)

Tests whether or not the specified object should be returned by this iterator. All objects from the wrapped iterator pass through this method in the same order as they are coming from the wrapped iterator.

Parameters:

object - The object to be tested.

Returns:

true if the object should be returned, false otherwise.

Throws:

X