it.uniroma2.art.owlart.models.impl

Class PredicatesOfStatementsIterator

java.lang.Object

it.uniroma2.art.owlart.models.impl.PredicatesOfStatementsIterator

All Implemented Interfaces:

ARTURIResourceIterator, RDFIterator<ARTURIResource>, java.util.Iterator<ARTURIResource>

public class PredicatesOfStatementsIterator
extends java.lang.Object
implements ARTURIResourceIterator

an wrapping iterator class which extracts objects from statement iterators

Author:

Armando Stellato

Constructor Summary

Constructors

Constructor and Description
PredicatesOfStatementsIterator(ARTStatementIterator statIt)

Method Summary

Methods

Modifier and Type	Method and Description
void	close() closes the iterator and release resources
ARTURIResource	getNext() gets the next element of the iterator, and advances over the data stream (roughly equivalent to traditional next() iterator method)
boolean	hasNext()
ARTURIResource	next()
void	remove()
boolean	streamOpen() tells if the data stream associated to this iterator is not empty (roughly equivalent to traditional hasNext() iterator method)

Methods inherited from class java.lang.Object

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

Constructor Detail

PredicatesOfStatementsIterator

public PredicatesOfStatementsIterator(ARTStatementIterator statIt)

Method Detail

close

public void close()
           throws ModelAccessException

Description copied from interface: RDFIterator

closes the iterator and release resources

Specified by:

close in interface RDFIterator<ARTURIResource>

Throws:

ModelAccessException

streamOpen

public boolean streamOpen()
                   throws ModelAccessException

Description copied from interface: RDFIterator

tells if the data stream associated to this iterator is not empty (roughly equivalent to traditional hasNext() iterator method)

Specified by:

streamOpen in interface RDFIterator<ARTURIResource>

Returns:

Throws:

ModelAccessException

getNext

public ARTURIResource getNext()
                       throws ModelAccessException

Description copied from interface: RDFIterator

gets the next element of the iterator, and advances over the data stream (roughly equivalent to traditional next() iterator method)

Specified by:

getNext in interface RDFIterator<ARTURIResource>

Returns:

Throws:

ModelAccessException

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<ARTURIResource>

next

public ARTURIResource next()

Specified by:

next in interface java.util.Iterator<ARTURIResource>

remove

public void remove()

Specified by:

remove in interface java.util.Iterator<ARTURIResource>