Module org.apache.jena.core

Package org.apache.jena.mem

Class ObjectIterator

java.lang.Object

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

org.apache.jena.mem.ObjectIterator

All Implemented Interfaces:

Iterator<Node>, IteratorCloseable<Node>, Closeable, ClosableIterator<Node>, ExtendedIterator<Node>

public abstract class ObjectIterator
extends NiceIterator<Node>

Helper class for listObjects. Because literal indexing means that the domain of the object map is not a node, but an indexing value (shared by a bunch of different literal nodes), getting the list of objects requires mapping that indexing value to all the triples that use it, and then filtering those triples for their objects, removing duplicates.

Constructor Summary

Constructors

Constructor	Description
ObjectIterator(Iterator<?> domain)

Method Summary

Modifier and Type	Method	Description
boolean	hasNext()	default hasNext: no elements, return false.
Node	next()	default next: throw an exception.
void	remove()	default remove: we have no elements, so we can't remove any.

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

andThen, andThen, asList, asSet, close, 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

forEach, nextOptional

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Details

ObjectIterator

public ObjectIterator(Iterator<?> domain)

Method Details

hasNext

public boolean hasNext()

Description copied from class: NiceIterator

default hasNext: no elements, return false.

Specified by:

hasNext in interface Iterator<Node>

Overrides:

hasNext in class NiceIterator<Node>

next

public Node next()

Description copied from class: NiceIterator

default next: throw an exception.

Specified by:

next in interface Iterator<Node>

Overrides:

next in class NiceIterator<Node>

remove

public void remove()

Description copied from class: NiceIterator

default remove: we have no elements, so we can't remove any.

Specified by:

remove in interface Iterator<Node>

Overrides:

remove in class NiceIterator<Node>