Package org.aksw.jena_sparql_api.rdf.collections

Class ForwardingIteratorWithForcedRemoval<T>

java.lang.Object

org.aksw.jena_sparql_api.rdf.collections.ForwardingIteratorWithForcedRemoval<T>

Type Parameters:

T -

All Implemented Interfaces:

Iterator<T>, org.apache.jena.atlas.iterator.IteratorCloseable<T>, org.apache.jena.atlas.lib.Closeable, org.apache.jena.util.iterator.ClosableIterator<T>

public class ForwardingIteratorWithForcedRemoval<T>
extends Object
implements org.apache.jena.util.iterator.ClosableIterator<T>

Iterator that forwards calls to another iterator. If it turns out that .remove() is not supported, the remaining items in the iterator will be preloaded at once. Removal will then pass the current item to a lambda that can remove the item from the underlying collection directly, such as by invoking collection.remove(item).

Author:

raven

Field Summary

Fields

Modifier and Type	Field	Description
protected T	currentItem
protected boolean	delegateRemoval
protected Iterator<T>	effectiveDelegate
protected Consumer<T>	forceRemover
protected boolean	isNextCalled
protected Iterator<T>	originalDelegate

Constructor Summary

Constructors

Constructor	Description
ForwardingIteratorWithForcedRemoval(Iterator<T> delegate, Consumer<T> forceRemover)
ForwardingIteratorWithForcedRemoval(Iterator<T> delegate, Consumer<T> forceRemover, boolean delegateRemoval)

Method Summary

Modifier and Type	Method	Description
void	close()
boolean	hasNext()
T	next()
void	remove()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Details

originalDelegate

protected Iterator<T> originalDelegate

effectiveDelegate

protected Iterator<T> effectiveDelegate

forceRemover

protected Consumer<T> forceRemover

delegateRemoval

protected boolean delegateRemoval

isNextCalled

protected boolean isNextCalled

currentItem

protected T currentItem

Constructor Details

ForwardingIteratorWithForcedRemoval

public ForwardingIteratorWithForcedRemoval(Iterator<T> delegate,
 Consumer<T> forceRemover)

ForwardingIteratorWithForcedRemoval

public ForwardingIteratorWithForcedRemoval(Iterator<T> delegate,
 Consumer<T> forceRemover,
 boolean delegateRemoval)

Method Details

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T>

next

public T next()

Specified by:

next in interface Iterator<T>

remove

public void remove()

Specified by:

remove in interface Iterator<T>

close

public void close()

Specified by:

close in interface org.apache.jena.util.iterator.ClosableIterator<T>

Specified by:

close in interface org.apache.jena.atlas.lib.Closeable