org.openanzo.jastor
Class CachedPropertyIterator<E>

java.lang.Object
  org.openanzo.jastor.CachedPropertyIterator<E>

Type Parameters:

E - The Jastor Type for the values that this iterator of properties represents

All Implemented Interfaces:

info.aduna.collections.iterators.CloseableIterator<E>, java.io.Closeable, java.util.Iterator<E>

public class CachedPropertyIterator<E>
extends java.lang.Object
implements info.aduna.collections.iterators.CloseableIterator<E>

Iterator that iterates over the set of object values for a given property on a given subject. Based on doing a find within the NamedGraph for the given subject and property

Author:

Ben Szekely (bhszekel@us.ibm.com)

Constructor Summary

CachedPropertyIterator(java.util.Collection<E> cache, INamedGraph graph, org.openrdf.model.Resource resource, org.openrdf.model.URI property, java.lang.String rangeUri, boolean objectProperty)
Create iterator of object values for a given property on a given subject.

Method Summary

void	close()
boolean	hasNext()
E	next()
void	remove()

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedPropertyIterator

public CachedPropertyIterator(java.util.Collection<E> cache,
                              INamedGraph graph,
                              org.openrdf.model.Resource resource,
                              org.openrdf.model.URI property,
                              java.lang.String rangeUri,
                              boolean objectProperty)

Create iterator of object values for a given property on a given subject. Uses a cached collection of values and not a find operation

Parameters:

cache - Cache of values for property

graph - INamedGraph that contains data to search

resource - Subject of statements to find

property - Property of statements to find

rangeUri - URI of this properties range

objectProperty - Flag specifying if property is ObjectProperty or DatatypeProperty

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<E>

next

public E next()

Specified by:

next in interface java.util.Iterator<E>

remove

public void remove()

Specified by:

remove in interface java.util.Iterator<E>

close

public void close()

Specified by:

close in interface info.aduna.collections.iterators.CloseableIterator<E>

Specified by:

close in interface java.io.Closeable